Valve lifter body
DCFirst Claim
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1. A valve lifter body that is generally cylindrical about an axis and provided with a first end and a second end, comprising:
- a) the valve lifter body has been cold formed, at least in part, to provide a first cavity and a second cavity;
b) an outer surface that encloses the first cavity and the second cavity;
c) the first end of the valve lifter body includes a first opening shaped to accept a roller;
d) the first cavity includes a first inner surface that is provided with a first wall, a second wall, a third wall, a fourth wall, a first angled wall, a second angled wall, a third angled wall fourth angled wall, a first angled surface, a second angled surface, a third angled surface, and a fourth angled surface;
e) the walls extend axially into the valve liter body from the first opening and are positioned so that the first wall faces the second wall and the third wall faces the fourth wall;
f) the first angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the first angled surface that is located adjacent to the first wall and the fourth wall;
g) the second angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the third angled surface that is located adjacent to the second wall and the third wall;
h) the third angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the fourth angled surface that is located adjacent to the second wall and the fourth wall;
i) the fourth angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the second angled surface that is located adjacent to the first wall and the third wall;
j) the second end of the valve lifter body includes a second opening; and
k) the second cavity extends axially into the valve lifter body from the second opening and includes a second inner surface that has been machined, at least in part, to provided a plurality of cylindrical surfaces and configured to accommodate a lash adjuster body, a socket body, and a leakdown plunger.
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Abstract
The present invention relates to a valve lifter body, comprising an outer surface, enclosing a first cavity and a second cavity, wherein the first cavity includes a first inner surface configured to house a cylindrical insert, the second cavity includes a second inner surface cylindrically shaped, and at least one of the cavities is fabricated through forging.
627 Citations
114 Claims
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1. A valve lifter body that is generally cylindrical about an axis and provided with a first end and a second end, comprising:
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a) the valve lifter body has been cold formed, at least in part, to provide a first cavity and a second cavity; b) an outer surface that encloses the first cavity and the second cavity; c) the first end of the valve lifter body includes a first opening shaped to accept a roller; d) the first cavity includes a first inner surface that is provided with a first wall, a second wall, a third wall, a fourth wall, a first angled wall, a second angled wall, a third angled wall fourth angled wall, a first angled surface, a second angled surface, a third angled surface, and a fourth angled surface; e) the walls extend axially into the valve liter body from the first opening and are positioned so that the first wall faces the second wall and the third wall faces the fourth wall; f) the first angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the first angled surface that is located adjacent to the first wall and the fourth wall; g) the second angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the third angled surface that is located adjacent to the second wall and the third wall; h) the third angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the fourth angled surface that is located adjacent to the second wall and the fourth wall; i) the fourth angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the second angled surface that is located adjacent to the first wall and the third wall; j) the second end of the valve lifter body includes a second opening; and k) the second cavity extends axially into the valve lifter body from the second opening and includes a second inner surface that has been machined, at least in part, to provided a plurality of cylindrical surfaces and configured to accommodate a lash adjuster body, a socket body, and a leakdown plunger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21, 22, 23, 24, 25, 26, 27)
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13. A valve lifter body that is generally cylindrical about an axis and provided with a first end and a second end, comprising:
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a) an outer surface that encloses a first cavity and a second cavity; b) the first end of the valve lifter body includes a first opening shaped to accept a roller; c) the first capacity includes a first inner surface that is provided with a first wall, a second wall a third wall, a fourth wall a first angled wall, a second angled wall, a third angled wall, fourth angled wall, a first curved surface, a second curved surface, and a flat surface; d) the first wall and the second wall extend axially into the valve lifter body from the first opening and are positioned so that the first wall faces the second wall; e) the third wall extends axially into the valve lifted body from the first opening and terminates, at least in part, at the second curved surface; f) the fourth wall extends axially into the valve lifted body from the first opening and terminates, at least in part, at the first curved surface; g) the third wall and the fourth wall are positioned so that the third wall faces the fourth wall; h) the first angled wall extends axially into the valve lifter body from the first opening, faces the second angled wall, and is located between the fourth wall and the first wall; i) the second angled wall extends axially into the valve lifter body from the first opening, faces the first angled wall, and is located between the second wall and the third wall; j) the third angled wall extends axially into the valve lifter body from the first opening, faces the fourth angled wall, and is located between the second wall and the fourth wall; k) the fourth angled wall extends axially into the valve lifter body from the first opening, faces the third angled wall, and is located between the first wall and the third wall; l) the first and second curved surfaces are, at least in part, located adjacent to the flat surface, which is generally orthogonal to the axis of the valve lifter body; m) the second end of the valve lifter body includes a second opening; n) the second cavity extends axially into the valve lifter body from the second opening and includes a second inner surface that is provided with a plurality of cylindrical surfaces and configured to accommodate a socket body and a leakdown plunger; and o) the first cavity is fabricated, at least in part, through cold forming. - View Dependent Claims (14, 15, 28, 29, 30, 31, 32, 33, 34, 35)
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16. A valve lifter body that is generally cylindrical about an axis and provided with a first end and a second end, comprising:
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a) an outer surface that encloses a first cavity and a second cavity; b) the fast end of the valve lifter body includes a first opening shaped to accept a roller; c) the first cavity includes a first inner surface that is provided with a first wall, a second wall, a third wall, a fourth wall, a first curved surface, a second curved surface, and a flat surface; d) the first wall extends axially into the valve lifter body from the first opening, faces the second wall, and terminates, at least in part, at the first curved surface; e) the second wall extends axially into the valve lifter body from the first opening, faces the first wall, and terminates, at least in part, at the second curved surface; f) the third wall extends axially into the valve lifter body from the first opening, faces the fourth wall, and terminates, at least in part, at the flat surface; g) the fourth wall extends axially into the valve lifter body from the first opening, acts the third wall, and terminates, at least in part, at the flat surface; h) the first curved surface extends from the first wall towards the axis of the valve lifter body and terminates, at least in part, at the flat surface; i) the second curved surface extends from the second wall towards the axis of the valve lifter body and terminates, at least in part, at the flat surface; j) the flat surface is generally rectangular in shape and generally orthogonal to the axis of the valve lifter body; k) the second end of the valve lifter body includes a second opening; l) the second cavity extends axially into the valve lifter body from the second opening and includes a second inner surface that is provided with a plurality of cylindrical surfaces and configured to accommodate a socket body and a leakdown plunger; and m) the first cavity is fabricated, at least in part, through cold forming. - View Dependent Claims (17, 18, 19, 20, 36, 37, 38, 39, 40, 41)
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42. A valve lifter body that is generally cylindrical about an axis and provided with a first end, a second end, and an outer surface, comprising:
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a) the first end of the valve lifter body includes a first opening shaped to accept a roller; b) the valve lifter body has been cold formed to provide a first cavity that includes a first inner surface provided with a first wall, a second wall, a third wall, a fourth wall, a first angled wall, a second angled wall, a third angled wall, fourth angled wall, a first angled surface, a second angled surface, a third angled surface, and a fourth angled surface; c) the walls have been cold formed to extend axially into the valve lifter body from the first opening and are positioned so that the first wall faces the second wall and the third wall faces the fourth wall; d) the first angled wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the first angled surface that is located adjacent to the first wall and the fourth wall; e) the second angled wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the third angled surface that is located adjacent to the second wall and the third wall; f) the third angled wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the fourth angled surface that is located adjacent to the second wall and the fourth wall; g) the fourth angled wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the second angled surface that is located adjacent to the first wall and the third wall; h) the second end of the valve lifter body includes a second opening; i) the valve lifter body has been cold formed to provide a second cavity extending axially into the valve lifter body from the second opening and machined, at least in part, to provide a second inner surface that includes a plurality of cylindrical surfaces; and j) the inner surface is configured to accommodate a lash adjuster body, a socket body, and a leakdown plunger. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A valve lifter body that is generally cylindrical about an axis and provided with a first end and a second end, comprising:
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a) an outer surface that encloses a first cavity and a second cavity; b) the first end of the valve lifter body has been, at least in part, cold formed to provided a first opening shaped to accept a roller and a first cavity that extends axially into the valve lifter body from the first opening; c) the first cavity has been cold formed to include a first inner surface that is provided with a first wall, a second wall, a third wall, a fourth wall, a first angled wall, a second angled wall, a third angled wall, fourth angled wall, a first curved surface, a second curved surface, and a flat surface; d) the first wall and the second wall extend axially into the valve lifter body from the first opening and are positioned so that the first wall faces the second wall; e) the third wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the second curved surface; f) the fourth wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the first curved surface; g) the third wall and the fourth wall are positioned so that the third wall faces the fourth wall; h) the first angled wall extends axially into the valve lifter body from the fist opening, faces the second angled wall, and is located between the fourth wall and the first wall; i) the second angled wall extends axially into the valve lifter body from the first opening, faces the first angled wall, and is located between the second wall and the third wall; j) the third angled wall extends axially into the valve lifter body from the first opening, faces the fourth angled wall, and is located between the second wall and the fourth wall; k) the forth angled wall extends axially into the valve lifter body from the first opening, faces the third angled wall, and is located between the first wall and the third wall; l) the first and second curved surfaces are, at least in part, located adjacent to the flat surface, which is generally orthogonal to the axis of the valve lifter body; m) the second end of the valve lifter body includes a second opening; and n) the second cavity extends axially into the valve lifter body from the second opening and includes a second inner surface that is provided with a plurality of cylindrical surfaces and configured to accommodate a socket body and a leakdown plunger. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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72. A valve lifter body that is generally cylindrical about an axis and provided with a first end and a second end, comprising:
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a) an outer surface enclosing a first cavity and a second cavity; b) the first cavity has been cold formed into the first end of the valve lifter body so that the first cavity extends axially into the valve lifter body from a first opening that has been shaped to accept a roller; c) the first cavity has been cold formed to include a first inner surface that is provided with a first wall, a second wall, a third wall, a fourth wall, a first curved surface, a second curved surface, and, relative to the curved surfaces, a generally flat surface; d) the first wall has been cold formed to extend axially into the valve lifter body from the first opening, face the second wall, and terminate, at least in part, at the first curved surface; e) the second wall has been cold formed to extend axially into the valve lifter body from the first opening, face the first wall, and terminate, at least in part, at the second curved surface; f) the third wall has been cold formed to extend axially into the valve lifter body from the first opening, face the fourth wall, and terminate, at least in put, at the flat surface; g) the fourth wall has been cold formed to extend axially into the valve lifter body from the first opening, face the third wall, and terminate, at least in part, at the flat surface; h) the first curved surface has been cold formed to extend from the first wall towards the axis of the valve lifter body and terminate, at least in part, at the flat surface; i) the second curved surface has been cold formed to extend from the second wall towards the axis of the valve lifter body and terminate, at least in part, at the flat surface; j) the flat surface has been cold formed to be generally orthogonal to the axis of the valve lifter body; k) the second end of the valve lifter body includes a second opening; l) the second cavity has been, at least in part, cold formed to extend axially into the valve lifter body from the second opening and includes a second inner surface; and m) the second inner surface is configured to accommodate a socket body and a leakdown plunger and has, at least in part, been machined to provide a well that is generally cylindrical in shape. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83)
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84. A valve lifter body that is generally cylindrical about an axis and provided with a first end, a second end, and an output surface, comprising:
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a) a forgeable material that has, at least in part, been cold formed to provide a first cavity and a second cavity; b) the first cavity has been cold formed into the first end of the valve lifter body so that the first cavity extends axially into the valve lifter body from a first opening that has been shaped to accept a roller; c) the first cavity has been cold formed to include a first inner surface that is provided with a first wall, a second wall, a third wall, a fourth wall, a first curved surface, a second curved surface, and, relative to the curved surfaces, a generally flat surface; d) the first wall has been cold formed to extend axially into the valve lifter body from the first opening, face the second wall, and terminate, at least in part, at the first curved surface; e) the second wall has been cold formed to extend axially into the valve lifter body from the first opening, ace the first wall and terminate, at least in part, at the second curved surface; f) the third wall has been cold formed to extend axially into the valve lifter body from the first opening, face the fourth wall, and terminate, at least in part, at the flat surface; g) the fourth wall has been cold formed to extend axially into the valve lifter body from the first opening, face the third wall and terminate, at least in part, at the flat surface; h) the first curved surface has been cold formed to extend from the first wall towards the axis of the valve lifter body and terminate, at least in part, at the flat surface; i) the second curved surface has been cold formed to extend from the second wall towards the axis of the valve lifter body and terminate, at least in part, at the flat surface; j) the flat surface has been cold formed to be generally orthogonal to the axis of the valve lifter body; k) the second end of the valve lifter body includes a second opening; l) the second cavity has been, at least in part, cold formed to extend axially into the valve lifter body from the second opening and includes a second inner surface; and m) the second inner surface of the second cavity is configured to accommodate a socket body and a leakdown plunger and has, at least in part, been machined to provide a well that is generally cylindrical in shape. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95)
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96. A valve lifter body that is generally cylindrical about an axis and provided with a first end, a second end, and an outer surface, comprising:
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a) a forgeable material that has, at least in part, been cold formed to provide a first cavity and a second cavity; b) the first end of the valve lifter body includes a first opening shaped to accept a roller; c) the first cavity has been cold formed to include a first inner surface provided with a first wall, a second wall, a third wall a fourth wall, a first angled wall, a second angled wall a third angled wall, fourth angled wall, a first angled surface, a second angled surface, a third angled surface, and a fourth angled surface; d) the walls have been cold formed to extend axially into the valve lifter body from the first opening and are positioned so that the first wall faces the second wall and the third wall faces the fourth wall; e) the first angled wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the first angled surface that is located adjacent to the first wall and the fourth wall; f) the second angled wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part at the third angled surface that is located adjacent to the second wall and the third wall; g) the third angled wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the fourth angled surface that is located adjacent to the second wall and the fourth wall; h) the fourth angled wall has been cold formed to extend axially into the valve lifter body from the first opening and terminate, at least in part, at the second angled surface that is located adjacent to the first wall and the third wall; i) the second end of the valve lifter body includes a second opening; j) the second cavity has, at least in part, been cold formed to extend axially into the valve lifter body from the second opening and has, at least in part, been machined to provide a second inner surface that includes a plurality of cylindrical surfaces; and k) the inner surface is configured to accommodate a lash adjuster body, a socket body, and a leakdown plunger. - View Dependent Claims (97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114)
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Specification