The Worlds best Spark Plug that no one seem to want to manufacture
Never wears out
never mis fires
A webmaster note.
Whilst this invention relates to the automotive industry I feel the spark plug could also be used in other applications requiring a sparking method that is reliable.
| United States Patent |
5,936,332 |
| Krupa , et al. |
August 10, 1999 |
Spark plug
Abstract
A very unique universal bi-directional firing spark plug for any
spark-ignited internal combustion engine is described. This spark plug
eliminates misfire and improves gas mileage, peaks engine performance,
horsepower, and increases the RPM range. This unique spark plug is made of an
elongated or non-elongated body with an electrical connector at one end. An
absolute aerodynamic semispherical dome or sphere electrode is secured to the
other end of the body. At least one absolute aerodynamic semicircular electrode
is also secured to the body adjacent to the dome or sphere electrode such that
the semicircular electrode has its inner surface equidistantly spaced from the
dome or sphere electrode's surface. The electrodes can be fabricated from
various metals, alloys, and/or precious metals and can also be coated with
various metals, alloys, and/or precious metals. Alternate embodiments of the
invention include two, three or four or more semicircular electrodes, all of
which have a surface equidistantly spaced from the aerodynamic semispherical
dome or sphere electrode along its complete arc length.
| Inventors: |
Krupa; Robert (Sterling Heights, MI);
Lulavage; Chester C. (Warren, MI) |
| Assignee: |
Century Development International Ltd.
(Farmington Hills, MI) |
| Appl. No.: |
897349 |
| Filed: |
July 21, 1997 |
| Current U.S. Class: |
313/141; 313/138; 313/140
|
| Intern'l Class: |
H01T 013/20 |
| Field of Search: |
313/141,123,138,140 123/169 EL
|
References Cited [Referenced
By]
U.S. Patent Documents
| 4416228 |
Nov., 1983 |
Benedikt et al. |
313/141. |
| 4914343 |
Apr., 1990 |
Kagawa et al. |
313/141. |
| 5280214 |
Jan., 1994 |
Johnson |
313/139. |
| 5369328 |
Nov., 1994 |
Gruber et al. |
313/141. |
| 5408961 |
Apr., 1995 |
Smith |
123/169. |
| 5420473 |
May., 1995 |
Thomas |
313/141. |
| 5510668 |
Apr., 1996 |
Rohwein et al. |
313/141. |
| 5527198 |
Jun., 1996 |
Chiu et al. |
445/7. |
Primary
Examiner: Patel; Ashok
Attorney, Agent or Firm: Gifford, Krass,
Groh, Sprinkle, Anderson & Citkowski, P.C.
Claims
We claim:
1. A spark plug for an internal combustion engine
comprising:
a body having an electrical connector at one end, a dome
electrode having a semispherical surface secured to a second end of said body,
means for electrically connecting said connector to said dome electrode, and at
least one semicircular electrode secured to said body such that said at least
one semicircular electrode has an inner surface equidistantly spaced from said
dome electrode along a portion of the length of said inner surface, said portion
forming an arc surface of said semicircular electrode.
2. The invention
as defined in claim 1 wherein said at least one semicircular electrode comprises
two semicircular electrodes, said semicircular electrodes being attached at
midpoints of said semicircular electrodes.
3. The invention as defined
in claim 1 wherein said at least one semicircular electrode comprises two
semicircular electrodes secured to said body such that said semicircular
electrodes each have a circular inner surface spaced from said dome electrodes
said semicircular electrodes each having two ends and a midpoint and being
spaced from each other at the midpoints of said semicircular electrodes and
attached at their ends.
4. The invention as defined in claim 1 wherein
said at least one semicircular electrode comprises two semicircular electrodes
secured to said body such that each of said semicircular electrodes has an inner
circular surface equidistantly spaced from said semispherical electrode along at
least a portion of said inner circular surface, said semicircular electrodes
being spaced from each other along the entire length of said semicircular
electrodes.
5. The invention as defined in claim 1 wherein said at least
two semicircular electrodes comprise two semicircular electrodes, each having
two ends secured to said body, wherein semicircular electrodes are attached to
each other at a point intermediate said ends.
6. The invention as
defined in claim 3 and comprising a third semicircular electrode attached at
intermediate points to said first two mentioned semicircular electrodes.
7. The invention as defined in claim 3 and comprising a third
semicircular electrodes attached at a midpoint to said first two mentioned
semicircular electrodes.
8. The invention as defined in claim 4 and
comprising a third semicircular electrode, said third electrode being attached
to midpoints of said first two mentioned semicircular electrodes.
9. The
invention as defined in claim 1 wherein said dome electrode has a semispherical
outer surface.
10. The invention as defined in claim 1 wherein said dome
electrode is spherical in shape.
Description
BACKGROUND OF THE INVENTION
I. Field of the Invention
The present invention relates generally to bi-directional firing spark
plugs for all internal combustion engines.
II. Description of the Prior
Art
There are many previously known spark plugs of the type used in
internal combustion engines. These spark plugs typically comprise an elongated
body having an electrical connector at one end. A pair of variable-spaced
electrodes are provided at the other end and one of those electrodes is
electrically connected to the electrical connector.
In many of these
previously known spark plugs, one of the electrodes consists of a cylindrical
post while the second electrode is generally L-shaped and has a portion which
overlies one end of the cylindrical post. Consequently, upon the application of
voltage to the cylindrical post, a spark is formed between the end of the
cylindrical post and the overlying portion of the other L-shaped electrode. The
spark, of course, tries to ignite the fuel in the combustion chamber of the
internal combustion engine.
As is well known, an electrical spark
between the post and the other electrode will occur at the position of the
shortest distance between the two electrodes. Consequently, with these
previously known spark plugs, the spark repeatedly strikes or extends between
the same two surfaces on the two electrodes during the operation of the spark
plug. This has many disadvantages.
One disadvantage is that, since the
spark repeatedly strikes the same area on both electrodes, a portion of the
electrodes is repeatedly ablated by the spark, which can result in premature
failure of the spark plug.
Another disadvantage is the smolder caused by
conventional L-shaped wire that obstructs and diverts the incoming air fuel
charge, causing a lighting and quenching and relighting of the flame front.
A more serious disadvantage of these previously known spark plugs,
however, is that, due to ionization caused by the spark during operation of the
spark plug, the spark plug repeatedly misfires during operation of the internal
combustion engine due to the small surface firing area. For each misfire of the
spark plug, the fuel within the combustion chamber is not ignited but, instead,
exhausted to the atmosphere. This adversely affects not only the efficiency of
the engine, it causes fouling of the plugs and increases the exhaust of noxious
fumes and pollutants to the atmosphere causing SMOG. This is particularly
critical, moreover, due to ever increasing governmental regulations and
environmental concerns regarding the permissible level of emissions from
spark-ignited internal combustion engines.
SUMMARY OF THE PRESENT
INVENTION
The present invention provides a unique universal
bidirectional-firing low emission spark plug for all spark-ignited internal
combustion engines which overcomes the above-mentioned disadvantages of the
previously known spark plugs.
In brief, the spark plug of the present
invention comprises an elongated or non-elongated body having an electrical
connector at one end. An aerodynamic semispherical dome electrode is secured to
the other end of the body and the connector and aerodynamic semispherical dome
electrode are electrically connected together.
At least one spherical or
semicircular electrode is also secured to the body such that the semicircular
electrode has its inner surface equidistantly spaced from the outer surface of
an aerodynamic semispherical dome electrode. The shape of the cross-section of
the semicircular electrode can be circular, elliptical, rectangular, rectangular
with rounded edges, square, square with rounded edges, trapezoidal, trapezoidal
with rounded edges, and/or arced such that the semicircular electrode's inner
surface is equidistantly spaced from the dome electrode's surface. Consequently,
during the operation of the spark plug, the spark between the semispherical and
semicircular electrodes continuously travels back and forth along the length of
the semicircular electrode. In doing so, misfiring is completely eliminated by
the spark constantly moving away from the previously generated ionization zone.
The electrodes can be fabricated from various metals, alloys, and/or precious
metals and can also be coated with various metals, alloys, and/or precious
metals.
In alternative embodiments of the invention, two, three or four
or more semicircular electrodes are secured to the spark plug body. These
multiple semicircular electrodes each have its inner surface equidistantly
spaced from the aerodynamic semispherical dome electrode, so that the spark
between the semispherical dome electrode and the semicircular electrode travels
along multiple semicircular electrodes.
Preferably, the semispherical
electrode forms the anode while the semicircular electrode(s) form the cathode.
Depending on what ignition system the spark plug is installed in, the
semispherical dome electrode could be the cathode, while the semicircular
electrode forms the anode.
BRIEF DESCRIPTION OF THE DRAWING
A
better understanding of the present invention will be had upon reference to the
following detailed description when read in conjunction with the accompanying
drawing, wherein like reference characters refer to like parts throughout the
several views, and in which:
FIG. 1 is an elevational view illustrating
a preferred embodiment of the present invention;
FIG. 2 is a
diagrammatic view illustrating the operation of the preferred embodiment of the
present invention;
FIG. 3 is an elevational view illustrating a portion
of a second preferred embodiment of the present invention;
FIG. 4 is an
elevational view illustrating a portion of a third preferred embodiment of the
present invention;
FIG. 5 is an elevational view illustrating a fourth
preferred embodiment of the present invention;
FIG. 6 is an elevational
view of a portion of a fifth preferred embodiment of the present invention.
FIG. 7 is an elevational view illustrating a portion of a sixth
preferred embodiment of the present invention;
FIG. 8 is an elevational
view illustrating a portion of a seventh preferred embodiment of the present
invention;
FIG. 9 is an elevational view illustrating an eighth
preferred embodiment of the present invention;
FIG. 10 is an elevational
view of a portion of a ninth preferred embodiment of the present invention;
FIG. 11 is an elevational view illustrating a portion of a tenth
preferred embodiment of the present invention;
FIG. 12 is an elevational
view illustrating a portion of an eleventh preferred embodiment of the present
invention;
FIG. 13 is an elevational view illustrating a twelfth
preferred embodiment of the present invention;
FIG. 14 is an elevational
view of a portion of a thirteenth preferred embodiment of the present invention;
FIG. 15 is an elevational view illustrating a portion of a fourteenth
preferred embodiment of the present invention;
FIG. 16 is an elevational
view illustrating a portion of a fifteenth preferred embodiment of the present
invention;
FIG. 17 is an elevational view illustrating a sixteenth
preferred embodiment of the present invention;
FIG. 18 is an elevational
view of a portion of a seventeenth preferred embodiment of the present
invention;
FIG. 19 is an elevational view of a portion of an eighteenth
preferred embodiment of the present invention;
FIG. 20 is an elevational
view of a portion of a nineteenth preferred embodiment of the present invention;
and
FIGS. 21 and 22 are side views illustrating alternative embodiments
of the electrode.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE
PRESENT INVENTION
With reference first to FIG. 1, a first preferred
embodiment of the spark plug 10 of the present invention is there shown and
comprises an elongated body 12 that can have many different shapes, typically
constructed of a metallic/alloy or other electrical conducting material, as well
as an electrical insulator of varying chemical composition. An electrical
connector 14 is attached to one end of the body while an electrode assembly 16
is provided at the opposite end of the body 12. An externally threaded metal
boss 18 of various sizes is also secured to the body 12 adjacent the electrode
assembly 16 for attaching the spark plug 10 to an internal combustion engine 20
(illustrated only diagrammatically).
With reference now particularly to
FIGS. 1 and 2, the electrode assembly 16 is there shown in greater detail and
comprises an aerodynamic semispherical dome electrode 22 and a semicircular
electrode 28. The aerodynamic semispherical dome electrode 22 is coaxial with
the spark plug body 12 and protrudes outwardly from one end 24 of the spark plug
body 12. Any conventional means 26 (FIG. 1) is used to electrically connect the
electrical connector 14 to the semispherical electrode 22.
The electrode
assembly 16 further includes a semicircular electrode 28 having its inner
surface 30 facing the aerodynamic semispherical dome electrode 22. The
semicircular electrode 28, furthermore, is secured to the spark plug body 12
such that its inner surface 30 is equidistantly spaced along its length from the
outer surface of the semispherical electrode 22. Furthermore, the semicircular
electrode 28 is electrically connected to the metal boss 18 and thus to the
internal combustion engine 20.
With reference now to FIG. 2, the
operation of the first preferred embodiment of the spark plug 10 of the present
invention is there shown. In operation, electrical voltage applied to spark
ignition wire (not shown) to the electrical connector 14 (FIG. 1) is conducted
to the semispherical electrode 22. The voltage potential between the
semispherical electrode 22 and semicircular electrode 28 thus causes a spark 34
to extend between the electrode 22 and electrode 28. In the conventional
fashion, the spark 34 ignites the fuel within the engine combustion chamber.
Still referring to FIG. 2, unlike the previously known spark plugs,
because the outer surface of the aerodynamic semispherical dome electrode 22 is
equidistantly spaced from the inner surface 30 of the semicircular electrode 28,
repeated sparking of the spark plug 10 causes the spark 34 to "walk along" the
adjacent surfaces of these two electrodes so that the spark 34 does not always
extend between the same spots on the electrodes 22 and 28 as in the previously
known spark plugs. In doing so, the spark plug 10 of the present invention not
only exhibits a longer life, but also eliminates misfirings of the spark plug
and greatly reduces emissions from the engine.
Typically, a positive
voltage is applied to the electrical connector 14 (FIG. 1) and thus to the
aerodynamic semispherical dome electrode 22 while the semicircular electrode 28
is maintained at the electrical ground of the internal combustion engine 20. As
such, the aerodynamic semispherical dome electrode forms an anode while the
semicircular electrode 28 forms a cathode. However, the electrical polarities of
the electrodes 22 and 28 may be reversed while still remaining within the scope
of the present invention.
With reference now to FIG. 3, the second
preferred embodiment of the present invention is there shown in which the
electrode assembly 16, as before, includes an aerodynamic semispherical dome
electrode 22 as well as the semicircular electrode 28. Additionally, however,
the electrode assembly 16 includes a second semicircular electrode 40 having an
inner surface 42 along its length which is equidistantly spaced from the
aerodynamic semispherical dome electrode 22. The second semicircular electrode
40, like the electrode 28, is electrically connected to the metal boss 18 as
well as to the first semicircular electrode 28.
Still referring to FIG.
3, preferably the second semicircular electrode 40 intersects the first
semicircular electrode 28 generally perpendicularly. Additionally, the
semicircular electrodes 28 and 40 are also preferably of a one-piece
construction. During the operation of the spark plug illustrated in FIG. 3, the
spark between the aerodynamic semispherical dome electrode 22 and the
semicircular electrodes 28 and 40 continuously "walks along" between the
electrodes 22 and both electrodes 28 and 40.
With reference now to FIG.
4, a still further embodiment of the electrode assembly 16 is there shown and
which, like the embodiment illustrated in FIG. 3, includes the aerodynamic
semispherical dome electrode 22 as well as two semicircular electrodes 28 and
40. Unlike the embodiment of FIG. 3, however, the semicircular electrodes 28 and
40 intersect each other at their ends at various angles. However, as before, the
inner surface 42 of the electrode 40 as well as the inner surface 30 of
electrode 28 are equidistantly spaced from the aerodynamic semispherical dome
electrode 22.
With reference now to FIG. 5, a still further embodiment
of the electrode assembly 16 is there shown and which, like the embodiment
illustrated in FIG. 4, includes the aerodynamic semispherical dome electrode 22
as well as two semicircular electrodes 28 and 40 intersecting each other at
their ends at various angles. Unlike the embodiment of FIG. 4, this embodiment
contains an additional electrode 43 that intersects electrodes 28 and 40 at
their ends. However, as before, the inner surfaces of the three electrodes 28,
40, and 43 are equidistantly spaced from the aerodynamic semispherical dome
electrode 22 and, as before, intersect each other at their ends at various
angles.
With reference now to FIG. 6, a still further embodiment of the
electrode assembly 16 is there shown and which, like the embodiment illustrated
in FIG. 5, includes the aerodynamic semispherical dome electrode 22 as well as
three semicircular electrodes 28, 40, and 43 intersecting each other at their
ends at various angles. Unlike the embodiment of FIG. 5, this embodiment
contains an additional electrode 44 that intersects electrodes 28, 40, and 43 at
their ends. However, as before, the inner surfaces of the four electrodes 28,
40, 43, and 44 are equidistantly spaced from the aerodynamic semispherical dome
electrode 22, and are at various angles.
With reference now to FIG. 7, a
still further embodiment of the electrode assembly 16 is there shown and which,
like the embodiment illustrated in FIG. 4, includes the aerodynamic
semispherical dome electrode 22 as well as two semicircular electrodes 31 and
32. Unlike the embodiment of FIG. 4, however, the semicircular electrodes 31 and
32 do not intersect each other at their ends at various angles or at the apex.
However, as before, the inner surfaces of electrodes 31 and 32 are equidistantly
spaced from the aerodynamic semispherical dome electrode 22.
With
reference now to FIG. 8, a still further embodiment of the electrode assembly 16
is there shown and which, like the embodiment illustrated in FIG. 7, includes
the aerodynamic semispherical dome electrode 22 as well as two semicircular
electrodes 31 and 32. Unlike the embodiment of FIG. 7, however, this embodiment
contains a third semicircular electrode 33 that does not intersect semicircular
electrodes 31 and 32 at their ends at various angles or at the apex. However, as
before, the inner surfaces of electrodes 31, 32, and 33 are equidistantly spaced
from the aerodynamic semispherical dome electrode 22.
With reference now
to FIG. 9, a still further embodiment of the electrode assembly is there shown
and which, like the embodiment illustrated in FIG. 3, includes an aerodynamic
semispherical dome electrode 22 as well as two semicircular electrodes 34 and
35. Unlike the embodiment of FIG. 3, however, electrodes 34 and 35 do not
intersect perpendicularly at the apex. However, as before, the inner surfaces of
electrodes 34 and 35 are equidistantly spaced from the aerodynamic semispherical
dome electrode 22.
With reference now to FIG. 10, a still further
embodiment of the electrode assembly is there shown and which, like the
embodiment illustrated in FIG. 9, includes an aerodynamic semispherical dome
electrode 22 as well as two semicircular electrodes 34 and 35. Unlike the
embodiment of FIG. 9, however, this embodiment contains a third semicircular
electrode 36 that intersects electrodes 34 and 35 at the apex. However, as
before, the inner surfaces of electrodes 34, 35, and 36 are equidistantly spaced
from the aerodynamic semispherical dome electrode 22.
With reference now
to FIG. 11, a still further embodiment of the electrode assembly is there shown
and which, like the embodiment illustrated in FIG. 10, includes an aerodynamic
semispherical dome electrode 22 as well as three semicircular electrodes 34, 35,
and 36. Unlike the embodiment of FIG. 10, however, this embodiment contains a
fourth semicircular electrode 37 that intersects electrodes 34, 35, and 36 at
the apex. However, as before, the inner surfaces of electrodes 34, 35, 36, and
37 are equidistantly spaced from the aerodynamic semispherical dome electrode
22.
With reference now to FIG. 12, a still further modification of the
electrode assembly 16 is there shown and which, like the embodiment illustrated
in FIG. 4, includes a semispherical dome electrode 22 as well as a first and
second semicircular electrodes 28 and 40 which are angularly offset from each
other and connected at their bases. Unlike the embodiment of FIG. 4, however, in
FIG. 12 a third semicircular electrode 50 is also provided which intersects the
other two semicircular electrodes 28 and 40 generally perpendicularly.
Preferably, all three electrodes 28, 40 and 50 are of a one-piece construction
and all three electrodes 28, 40 and 50 are electrically connected not only to
each other, but also the metal boss 18. Additionally, as before, the inner
surfaces of the semicircular electrodes are equidistantly spaced from the outer
surface of the semispherical dome electrode 22.
With reference now to
FIG. 13, a still further embodiment of the electrode assembly is there shown and
which, like the embodiment illustrated in FIG. 12, includes an aerodynamic
semispherical dome electrode 22 as well as three semicircular electrodes 28, 40,
and 50. Unlike the embodiment of FIG. 12, however, this embodiment contains a
fourth semicircular electrode 43. This fourth semicircular electrode 43
intersects the semicircular electrodes 28 and 40 at their ends at various angles
and intersects the semicircular electrode 50 generally perpendicularly. However,
as before, the inner surfaces of these semicircular electrodes are equidistantly
spaced from the aerodynamic semispherical dome electrode 22.
With
reference now to FIG. 14, a still further embodiment of the electrode assembly
is there shown and which, like the embodiment illustrated in FIG. 13, includes
an aerodynamic semispherical dome electrode 22 as well as three semicircular
electrodes 28, 40, 43, and 50. Unlike the embodiment of FIG. 13, however, this
embodiment contains a fifth semicircular electrode 44. This fifth semicircular
electrode 44 intersects the semicircular electrodes 28, 40, and 43 at their ends
at various angles and intersects the semicircular electrode 50 generally
perpendicularly. However, as before, the inner surfaces of these semicircular
electrodes are equidistantly spaced from the aerodynamic semispherical dome
electrode 22.
With reference now to FIG. 15, a still further embodiment
of the electrode assembly is there shown and which, like the embodiment
illustrated in FIG. 12, includes an aerodynamic semispherical dome electrode 22
as well as three semicircular electrodes 28, 40, and 50. Unlike the embodiment
of FIG. 12, however, this embodiment contains a fourth semicircular electrode
51. This fourth semicircular electrode 51 intersects the semicircular electrodes
28 and 40 generally perpendicularly, and it does not intersect the semicircular
electrode 50. However, as before, the inner surfaces of these semicircular
electrodes are equidistantly spaced from the aerodynamic semispherical dome
electrode 22.
With reference now to FIG. 16, a still further embodiment
of the electrode assembly is there shown and which, like the embodiment
illustrated in FIG. 14, includes an aerodynamic semispherical dome electrode 22
as well as four semicircular electrodes 28, 40, 50, and 51. Unlike the
embodiment of FIG. 15, the third and fourth semicircular electrodes 50 and 51
intersect at their bases. However, as before, the inner surfaces of these
semicircular electrodes are equidistantly spaced from the aerodynamic
semispherical dome electrode 22.
With reference now to FIG. 17, a still
further embodiment of the electrode assembly 16 is there shown and which, like
the embodiment illustrated in FIG. 7, includes the aerodynamic semispherical
dome electrode 22 as well as two semicircular electrodes 31 and 32 that are
spaced apart. Unlike the embodiment of FIG. 7, however, this embodiment contains
a third semicircular electrode 50 that intersects semicircular electrodes 31 and
32 generally perpendicularly at the apex. However, as before, the inner surfaces
of electrodes 31, 32, and 50 are equidistantly spaced from the aerodynamic
semispherical dome electrode 22.
With reference now to FIG. 18, a still
further embodiment of the electrode assembly 16 is there shown and which, like
the embodiment illustrated in FIG. 17, includes the aerodynamic semispherical
dome electrode 22 as well as two semicircular electrodes 31 and 32 that are
spaced apart and a third semicircular electrode 50 that intersects semicircular
electrodes 31 and 32 generally perpendicularly. Unlike the embodiment of FIG.
17, however, this embodiment contains a fourth semicircular electrode 51 that
intersects semicircular electrodes 31 and 32 generally perpendicularly.
Furthermore, semicircular electrodes 50 and 51 are spaced apart and parallel to
each other. However, as before, the inner surfaces of the semicircular
electrodes 31, 32, 50, and 51 are equidistantly spaced from the aerodynamic
semispherical dome electrode 22.
With reference now to FIG. 19, a still
further embodiment of the electrode assembly 17 is there shown and which, like
the embodiment illustrated in FIG. 18, includes the aerodynamic semispherical
dome electrode 22 as well as two semicircular electrodes 31 and 32 that are
spaced apart and two additional semicircular electrodes 50 and 51 that are
spaced apart. The semicircular electrodes 31 and 32 intersect and are generally
perpendicular to semicircular electrodes 50 and 51. Unlike the embodiment of
FIG. 18, however, this embodiment contains a fifth semicircular electrode 33
that is spaced apart from semicircular electrodes 31 and 32. Furthermore,
semicircular electrodes 50 and 51 intersect semicircular electrode 33 generally
perpendicularly. However, as before, the inner surfaces of the semicircular
electrodes 31, 32, 33, 50, and 51 are equidistantly spaced from the aerodynamic
semispherical dome electrode 22. As stated before, all semicircular electrodes
are electrically connected to the metal boss 18 and thus to the internal
combustion engine.
With reference now to FIG. 20, a still further
embodiment of the electrode assembly 19 is there shown and which, like the
embodiment illustrated in FIG. 19, includes the aerodynamic semispherical dome
electrode 22 as well as three semicircular electrodes 31, 32 and 33 that are
spaced apart and three additional semicircular electrodes 50, 51 and 52 that are
spaced apart. The semicircular electrodes 31, 32 and 33 intersect and are
generally perpendicular to semicircular electrodes 50, 51 and 52. However, as
before, the inner surfaces of the semicircular electrodes 31, 32, 33, 50, 51 and
52 are equidistantly spaced from the aerodynamic semispherical dome electrode
22. As stated before, all semicircular electrodes are electrically connected to
the metal boss 18 and thus to the internal combustion engine.
With
reference now to FIGS. 21 and 22, further embodiments of the electrode assembly
are there shown in which the cathode electrode 22' is spherical in shape rather
than the semispherical cathode electrodes 22 of FIGS. 1-20. Although only one
electrode 28 (FIG. 21) or 28' (FIG. 22) is shown, the spherical electrode 22'
can be utilized in conjunction with any of the anode electrode configurations of
FIGS. 1-20. Furthermore, the anode electrode 28 or 28' may be either U-shaped as
shown in FIG. 21 or semicircular in shape as shown in FIG. 22 in order to
maintain the distance between the electrodes 28' and 22' equidistance along
substantially the entire length of the electrode 28'.
From the
foregoing, it can be seen that the present invention provides a novel spark plug
construction which completely overcomes the previously mentioned disadvantages
of the previously known spark plug constructions. Having described my invention,
however, many modifications thereto will become apparent to those skilled in the
art to which it pertains without deviation from the spirit of the invention as
defined by the scope of the appended claims.
* * * * *
Additional information can be found at
Robert Stanleys Firestorm website
There was also an article by the same author in the Nexus New times magazine
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