US4781076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camshaft for reciprocating piston engines
Assignee: Timken US LLC
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Filing: 1986-01-17
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Granted: 1988-11-01
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Expires: 2006-01-17
Abstract
Abstract Axially spaced cams and bearing rings mounted on a tube are permanently secured to the tube by circumferentially spaced projections on the tube extending into grooves formed on the inside surfaces of the cams and bearing rings.
Inventors
- 👤 Michael J. Hartnett
- 👤 Robert Lugosi
- 👤 James Rollins
- 👤 John P. Cook
- 👤 Jeffrey A. Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:52
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/047; B; B21; B21D; B21D53/00; B21D53/84; B21D53/845; F16; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/063; F16D; F16D1/00; F16D1/06; F16D1/064; F16D1/072; F16H; F16H53/00; F16H53/02; F16H53/025; B23; B23P; B23P2700/00; B23P2700/02; F16C2240/00; F16C2240/40; F16C2240/46; F16C2360/00; F16C2360/18; F16C3/00; F16C3/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49908; Y10T29/49938; Y10T29/4994; Y10T74/00; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A camshaft for reciprocal piston engines comprising: a rotatable tube having an axis and an annular wall; axially spaced members including axially spaced cams and bearing rings mounted about the tube, the rotatable tube, cams, and bearings having the same axis; the rotatable tube having a plurality of circumferentially spaced projections extending axially through and from one longitudinally outermost member to and through the other longitudinally outermost member, said circumferentially spaced projections being spaced apart from each other, the projections being formed by expanding circumferentially spaced portions of the wall of the tube away from the axis of the tube, each cam and each bearing ring having circumferentially spaced axially extending grooves on their inner surfaces, said circumferentially spaced grooves being spaced apart from each other, each projection of the tube extending into a groove of each cam and a groove of each bearing ring to permanently secure the cams and bearing rings on the tube.
Claim 2
Dependent Claim
156 words
A camshaft for reciprocal piston engines comprising: a rotatable tube having an axis and an annular wall; axially spaced members including axially spaced cams and bearing rings mounted about the tube, the rotatable tube, cams, and bearings having the same axis; the rotatable tube having a plurality of circumferentially spaced projections extending axially through and from one longitudinally outermost member to and through the other longitudinally outermost member, said circumferentially spaced projections being spaced apart from each other, the projections being formed by expanding circumferentially spaced portions of the wall of the tube away from the axis of the tube, each cam and each bearing ring having circumferentially spaced axially extending grooves on their inner surfaces, said circumferentially spaced grooves being spaced apart from each other, each projection of the tube extending into a groove of each cam and a groove of each bearing ring to permanently secure the cams and bearing rings on the tube.
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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) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |