US4211192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camshaft for an internal combustion engine
Assignee: Sulzer AG
•
Filing: 1977-12-01
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Granted: 1980-07-08
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Expires: 1997-12-01
Abstract
Abstract The camshaft is constructed in portions each of which has an integral flange at one end and a releaseably secured discoid member at the other end. The flange of one shaft portion is secured to the discoid member of an adjacent shaft portion by means of screws. Each shaft portion has a plurality of cams shrink fitted thereon.
Inventors
- 👤 Peter Baumgartner
- 👤 Robert Kuhne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:41
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/047; B; B23; B23P; B23P11/00; B23P11/02; B23P11/022; F16; F16H; F16H53/00; F16H53/02; F16H53/025; B23P2700/00; B23P2700/02; F16B; F16B2200/00; F16B2200/50; F16B2200/503; F16B2200/506; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T403/00; Y10T403/48; Y10T74/00; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A cam shaft comprising a plurality of coaxially disposed elongated cam shaft portions, each shaft portion having an integral flange at one end; a discoid cam member releaseably secured at an opposite end of each shaft portion; a plurality of screws releaseably securing said flange of one shaft portion to a discoid member of an adjacent shaft portion; and a plurality of sleeves shrunk-fit on each shaft portion, each said sleeve having a conical outer surface; a plurality of cams mounted on each shaft portion, each said cam being shrunk-fit on a respective outer surface of a respective sleeve; an oil pressure line in each shaft portion communicating with an inside surface of at least one sleeve to deliver pressurized oil thereto to permit turning of said one sleeve on said shaft portion; and a radial bore in each respective cam for passage of a pressurized medium to an inner surface thereof to permit removal of said respective cam from said shaft portion.
Claim 2
Dependent Claim
163 words
A cam shaft comprising a plurality of coaxially disposed elongated cam shaft portions, each shaft portion having an integral flange at one end; a discoid cam member releaseably secured at an opposite end of each shaft portion; a plurality of screws releaseably securing said flange of one shaft portion to a discoid member of an adjacent shaft portion; and a plurality of sleeves shrunk-fit on each shaft portion, each said sleeve having a conical outer surface; a plurality of cams mounted on each shaft portion, each said cam being shrunk-fit on a respective outer surface of a respective sleeve; an oil pressure line in each shaft portion communicating with an inside surface of at least one sleeve to deliver pressurized oil thereto to permit turning of said one sleeve on said shaft portion; and a radial bore in each respective cam for passage of a pressurized medium to an inner surface thereof to permit removal of said respective cam from said shaft portion.
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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) | 1983-07-08 | 1984-01-07 | 1984-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-08 | 1988-01-07 | 1988-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-08 | 1992-01-07 | 1992-07-08 | $7700.00 | Window Closed / Lapsed |