US3347347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronized clutch with multiple friction members
Assignee: Dr Ing HCF Porsche AG
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Filing: 1966-02-14
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Granted: 1967-10-17
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Expires: 1986-02-14
Abstract
No abstract record available.
Inventors
- 👤 Hetmann Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:49
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/02; F16D23/025; F16D23/04; F16D23/06; F16D2023/0625; F16D2023/0656
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A SYNCHRONIZING INSTALLATION FOR CHANGE-SPEED TRANSMISSIONS, ESPECIALLY MOTOR VEHICLES, WHICH INCLUDES A SLOTTED AND SPRINGY SYNCHRONIZING RING THAT EFFECTS SYNCHRONISM WHEN BROGHT INTO FRICTIONAL ENGAGEMENT WITH THE SHIFTING TEETH OF A SHIFTING SLEEVE AND IN WHICH THE SHIFTING SLEEVE, ADAPTED TO BE CONNECTED WITH THE COUPLING BODIES OF THE GEAR TO BE ENGAGED, IS AXIALLY DISPLACEABLY SUPPORTED ON GUIDE WEBS OF A CARRIER WHICH IS CONNECTED FOR ROTATION IN UNISON WITH THE TRANSMISSION SHAFT CARRYING THE GEARS, THE IMPROVEMENT COMPRISING A FRICTION MEMBER ARRANGED IN THE PLANE BETWEEN THE SLOTTED SYNCHRONIZING RING AND THE COUPLING BODY OF THE GEAR TO BE ENGAGED, SAID FRICTION MEMBER COMING INTO FRICTIONAL ENGAGEMENT WITH THE ADJACENT FRICTION SURFACES PROVIDED AT THE SLOTTED SYNCHRONIZING RING AND AT THE COUPLING BODY AND BEING SUPPORTED IN THE CIRCUMFERENTIAL DIRECTION AT THE CARRIER OF THE SHIFTING SLEEVE.
Claim 2
Dependent Claim
140 words
IN A SYNCHRONIZING INSTALLATION FOR CHANGE-SPEED TRANSMISSIONS, ESPECIALLY MOTOR VEHICLES, WHICH INCLUDES A SLOTTED AND SPRINGY SYNCHRONIZING RING THAT EFFECTS SYNCHRONISM WHEN BROGHT INTO FRICTIONAL ENGAGEMENT WITH THE SHIFTING TEETH OF A SHIFTING SLEEVE AND IN WHICH THE SHIFTING SLEEVE, ADAPTED TO BE CONNECTED WITH THE COUPLING BODIES OF THE GEAR TO BE ENGAGED, IS AXIALLY DISPLACEABLY SUPPORTED ON GUIDE WEBS OF A CARRIER WHICH IS CONNECTED FOR ROTATION IN UNISON WITH THE TRANSMISSION SHAFT CARRYING THE GEARS, THE IMPROVEMENT COMPRISING A FRICTION MEMBER ARRANGED IN THE PLANE BETWEEN THE SLOTTED SYNCHRONIZING RING AND THE COUPLING BODY OF THE GEAR TO BE ENGAGED, SAID FRICTION MEMBER COMING INTO FRICTIONAL ENGAGEMENT WITH THE ADJACENT FRICTION SURFACES PROVIDED AT THE SLOTTED SYNCHRONIZING RING AND AT THE COUPLING BODY AND BEING SUPPORTED IN THE CIRCUMFERENTIAL DIRECTION AT THE CARRIER OF THE SHIFTING SLEEVE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |