Patent US4300273A successfully refreshed from Google Patents.
US4300273A
Expired / Lapsed
US
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Method for making laminated spacer plate for engines
Assignee: Caterpillar Inc
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Filing: 1979-11-19
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Granted: 1981-11-17
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Expires: 1999-11-19
Abstract
Abstract A laminated spacer plate (10) for engines, pumps and the like comprises a plurality of metallic sheets (11-14), each having openings (15,16,17,24,40) preformed therethrough and secured together. The preforming of the openings through the individual sheets facilitates intercommunication of certain of the openings with passages formed within the spacer plate and eliminates the need for costly machining and related manufacturing operations normally required for the fabrication of a one-piece spacer plate.
Inventors
- 👤 David A. Lockhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:57
CPC Classifications
B; B23; B23P; B23P15/00; F; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/16; F02F1/166; F02F11/00; F02F11/002; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0818; F16J15/0825; F02B; F02B3/00; F02B3/06; F16J2015/085; F16J2015/0862; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49297; Y10T29/49789; Y10T29/49798
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
181 words
A method for preforming and mounting a laminated spacer plate (10) in an internal combustion engine to space the head (19) and block (18) thereof at substantially the thickness of a support flange (21) of each cylinder liner (20) employed in said engine comprising the steps of forming a plurality of openings (15,16,17,40) through each of a plurality of separate sheets (11-14), aligning said sheets (11-14) in superimposed relationship relative to each other to align at least some of said openings (15,16,17,40) with respect to each other, securing said sheets (11-14) together to form a laminated spacer plate (10) having a composite thickness at least substantially the same as the thickness of the support flange (21) of said liner (20), mounting said laminated spacer plate (10) in sandwiched relationship between the head (19) and block (18) of said internal combustion engine so that the laminated spacer plate (10) is seated adjacent the support flange (21) of each cylinder liner (20), and mounting a sealing gasket (22,23) between said spacer plate (10) and each of said head (19) and said block (18).
Claim 2
Independent Claim
181 words
A method for preforming and mounting a laminated spacer plate (10) in an internal combustion engine to space the head (19) and block (18) thereof at substantially the thickness of a support flange (21) of each cylinder liner (20) employed in said engine comprising the steps of forming a plurality of openings (15,16,17,40) through each of a plurality of separate sheets (11-14), aligning said sheets (11-14) in superimposed relationship relative to each other to align at least some of said openings (15,16,17,40) with respect to each other, securing said sheets (11-14) together to form a laminated spacer plate (10) having a composite thickness at least substantially the same as the thickness of the support flange (21) of said liner (20), mounting said laminated spacer plate (10) in sandwiched relationship between the head (19) and block (18) of said internal combustion engine so that the laminated spacer plate (10) is seated adjacent the support flange (21) of each cylinder liner (20), and mounting a sealing gasket (22,23) between said spacer plate (10) and each of said head (19) and said block (18).
Claim 3
Dependent Claim
37 words
The method of claim 1 further comprising the step of stamping (32,33) each sheet (11-14) out of an endless roll (31) of material while simultaneously forming said plurality of openings (15,16,17,40) through each of said sheets (11-14).
Claim 4
Dependent Claim
46 words
The method of claim 1 wherein the step of forming a plurality of openings (15,16,17,40) through each of said sheets (11-14) comprises the step of forming a plurality of cylinder bore openings (15), bolt holes (17), fluid director ports (16), and inlet and exhaust slots (40).
Claim 5
Dependent Claim
25 words
The method of claim 1 further comprising the step of cleaning (34) said sheets (11-14) prior to the step of securing said sheets (11-14) together.
Claim 6
Dependent Claim
24 words
The method of claim 4 further comprising the step of deburring (35) each of said sheets (11-14) prior to securing said sheets (11-14) together.
Claim 7
Dependent Claim
39 words
The method of claim 1 wherein said step of aligning said sheets (11-14) in superimposed relationship relative to each other comprises the step of disposing locator pins (39) in some of the openings (17) formed through said sheets (11-14).
Claim 8
Dependent Claim
40 words
The method of claim 1 wherein the step of securing said sheets (11-14) together comprises the step of coating at least some of the surfaces of said sheets (11-14) with an adhesive (36) and compressing (37,38) said sheets (11-14) together.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |