US3332405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine brake
Assignee: Jacobs Vehicle Systems Inc
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Filing: 1965-10-01
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Granted: 1967-07-25
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Expires: 1985-10-01
Abstract
No abstract record available.
Inventors
- 👤 Girard S Haviland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:40
CPC Classifications
F; F01; F01L; F01L13/00; F01L13/06; F01L13/065; F01L1/00; F01L1/12; F01L1/18; F01L1/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN AN INTERNAL COMBUSTION ENGINE INCLUDING A PISTON CYLINDER HAVING AN EXHAUST VALVE, A SPRING NORMALLY HOLDING THE EXHAUST VALVE CLOSED, A ROCKER ARM PIVOTABLE TO OPEN SAID VALVE, A ROTATABLE CAMSHAFT, AND A CAM CARRIED BY THE CAMSHAFT COOPERABLE WITH THE ROCKER ARM TO PIVOT THE LATTER TO OPEN THE EXHAUST VALVE AT A NORMAL TIME IN THE CYCLE OF THE PISTON IN THE PISTON CYLINDER, AN AUXILIARY CAM CARRIED BY THE CAMSHAFT, A HYDRAULICALLY ACTUABLE LATCH PISTON MOVABLE IN A BORE PROVIDFED IN THE ROCKER ARM, THE LATCH PISTON HAVING AN HYDRAULICALLY ACTUATED CONDITION WHEREIN IT PROJECTS FROM THE ROCKER ARM AND IN WHICH CONDITION THE AUXILIARY CAM HAS COOPERATION WITH THE LATCH PISTON TO PIVOT THE ROCKER ARM TO OPEN THE EXHAUST VALVE AT A TIME OTHER THAN THE SAID NORMAL TIME, AND THE LATCH PISTON HAVING A NORMAL CONDITION WHEREIN IT IS RETRACTED IN THE ROCKER ARM AND IS DISABLED FROM SUCH COOPERATION WITH THE AUXILIARY CAM TO SO PIVOT THE ROCKER ARM.
Claim 2
Dependent Claim
167 words
IN AN INTERNAL COMBUSTION ENGINE INCLUDING A PISTON CYLINDER HAVING AN EXHAUST VALVE, A SPRING NORMALLY HOLDING THE EXHAUST VALVE CLOSED, A ROCKER ARM PIVOTABLE TO OPEN SAID VALVE, A ROTATABLE CAMSHAFT, AND A CAM CARRIED BY THE CAMSHAFT COOPERABLE WITH THE ROCKER ARM TO PIVOT THE LATTER TO OPEN THE EXHAUST VALVE AT A NORMAL TIME IN THE CYCLE OF THE PISTON IN THE PISTON CYLINDER, AN AUXILIARY CAM CARRIED BY THE CAMSHAFT, A HYDRAULICALLY ACTUABLE LATCH PISTON MOVABLE IN A BORE PROVIDFED IN THE ROCKER ARM, THE LATCH PISTON HAVING AN HYDRAULICALLY ACTUATED CONDITION WHEREIN IT PROJECTS FROM THE ROCKER ARM AND IN WHICH CONDITION THE AUXILIARY CAM HAS COOPERATION WITH THE LATCH PISTON TO PIVOT THE ROCKER ARM TO OPEN THE EXHAUST VALVE AT A TIME OTHER THAN THE SAID NORMAL TIME, AND THE LATCH PISTON HAVING A NORMAL CONDITION WHEREIN IT IS RETRACTED IN THE ROCKER ARM AND IS DISABLED FROM SUCH COOPERATION WITH THE AUXILIARY CAM TO SO PIVOT THE ROCKER ARM.
References Cited (Backward Citations)
US2002196A
Cited
US3220392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |