Patent US3756207A successfully refreshed from Google Patents.
US3756207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pushrod inclosure
Assignee: Individual
•
Filing: 1972-05-01
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Granted: 1973-09-04
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Expires: 1992-05-01
Abstract
Abstract A pushrod inclosure that extends between the head and block of an internal combustion engine and serves to individually inclose each of the pushrods that operate the valves of the engine by rotation of the cam shaft. The inclosure includes a pair of telescoping members bearing against each other at at least two axially displaced locations with spring means enclosed between the members and between said bearing surfaces to urge the members in opposite directions while compressing a gasket disposed between the members.
Inventors
- 👤 G Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:28
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/46; F01L1/12; F01L1/14; F01L1/146
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
A pushrod inclosure of the tubular telescoping type for extending between the block and head of an internal combustion engine to individually enclose each of the pushrods that operate the valves of the engine and including in combination, a pair of telescoping members, an outer telescoping member and an inner telescoping member movable with respect to each other upon a common longitudinal axis, said telescoping members having bearing surfaces bearing against each other at at least two axially displaced locations, gasket means disposed in oil sealing relation between said telescoping members and spring means telescopically enclosed between said telescoping members and disposed between said axially displaced bearing surface locations and engaging the outer telescoping member at one end and the inner telescoping member at the other end for urging said members in opposite directions along said axis to elongate said inclosure while compressing said gasket means.
Claim 2
Dependent Claim
146 words
A pushrod inclosure of the tubular telescoping type for extending between the block and head of an internal combustion engine to individually enclose each of the pushrods that operate the valves of the engine and including in combination, a pair of telescoping members, an outer telescoping member and an inner telescoping member movable with respect to each other upon a common longitudinal axis, said telescoping members having bearing surfaces bearing against each other at at least two axially displaced locations, gasket means disposed in oil sealing relation between said telescoping members and spring means telescopically enclosed between said telescoping members and disposed between said axially displaced bearing surface locations and engaging the outer telescoping member at one end and the inner telescoping member at the other end for urging said members in opposite directions along said axis to elongate said inclosure while compressing said gasket means.
Claim 3
Dependent Claim
25 words
A pushrod inclosure as claimed iN claim 1 wherein external flanges are disposed in predetermined spaced relation inwardly from the outer ends of said inclosure.
Claim 4
Dependent Claim
22 words
A pushrod inclosure as claimed in claim 2 wherein outwardly from said flanges the ends of the inclosure diminishes gradually in diameter.
Claim 5
Dependent Claim
23 words
A pushrod inclosure as claimed in claim 1 wherein the ends of said inclosure are reduced in diameter to receive thereover annular gaskets.
References Cited (Backward Citations)
US1718490A
Cited
US2020621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |