Patent US3695403A successfully refreshed from Google Patents.
US3695403A
Expired / Lapsed
US
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Synchronizing mechanisms for power transmissions
Assignee: Ji Case Europe Ltd
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Filing: 1970-03-02
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Granted: 1972-10-03
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Expires: 1990-03-02
Abstract
Abstract A device for synchronizing the speed of two torque transmitting members of a vehicle gearbox has a cone clutch engagable by actuating pins which pass through clearance holes in an axially slidable clutching member. Each pin has a shoulder which balks axial movement of the clutching member when the axes of the pins are moved out of alignment with the axes of the holes in said member when torque is transmitted by the cone clutch. The clutching member carries springs which centralize the pins axially of said member to ensure movement of the pins in unison with said member and to reduce wear of the pins and the clearance holes.
Inventors
- 👤 Thomas Eastwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:39
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/02; F16D23/04; F16D23/06; F16D23/0606
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
165 words
A synchronizing mechanism having at least one positive clutch; a friction clutch associated with each positive clutch; one element of each friction clutch and one element of its associated positive clutch forming part of a first torque transmitting member; the other element of said positive clutch being formed on a clutching member which is drivably connected to and is axially slidable on a second torque transmitting member; the other element of said friction clutch being carried on a plurality of pins, each pin passing through a radially offset axial clearance hole in the clutching member; and each pin having at least one enlarged diameter portion forming a balking shoulder that contacts the adjacent edge of its associated clearance hole to prevent engagement of the positive clutch if the axes of the pins are not aligned with the axes of the clearance holes, wherein there are provided resilient means engageable with the balking shoulders for urging the pins to move in unison with said clutching member.
Claim 2
Dependent Claim
165 words
A synchronizing mechanism having at least one positive clutch; a friction clutch associated with each positive clutch; one element of each friction clutch and one element of its associated positive clutch forming part of a first torque transmitting member; the other element of said positive clutch being formed on a clutching member which is drivably connected to and is axially slidable on a second torque transmitting member; the other element of said friction clutch being carried on a plurality of pins, each pin passing through a radially offset axial clearance hole in the clutching member; and each pin having at least one enlarged diameter portion forming a balking shoulder that contacts the adjacent edge of its associated clearance hole to prevent engagement of the positive clutch if the axes of the pins are not aligned with the axes of the clearance holes, wherein there are provided resilient means engageable with the balking shoulders for urging the pins to move in unison with said clutching member.
Claim 3
Dependent Claim
72 words
A synchronizing mechanism according to claim 1, wherein each pin has only one balking shoulder and the resilient means comprise a set of springs located in transverse slots in the clutching member each of which is engageable with one of the balKing shoulders, and wherein there is provided a resilient device disposed between an annular member secured to the end of each pin and a shoulder on the second torque transmitting member.
Claim 4
Dependent Claim
17 words
A synchronizing mechanism according to claim 2, wherein said resilient device is one or more plate springs.
Claim 5
Dependent Claim
16 words
A synchronizing mechanism according to claim 2, wherein said resilient device is a helical compression spring.
Claim 6
Dependent Claim
68 words
A synchronizing mechanism according to claim 1, wherein each pin has two oppositely inclined balking shoulders and said resilient means comprise two sets of springs located in transverse slots in the clutching member, each spring of one set being engageable with one of those shoulders inclined in one direction and each spring of the other set being engageable with one of those shoulders inclined in the other direction.
Claim 7
Dependent Claim
30 words
A synchronizing mechanism according to claim 2, wherein each spring is formed from a single wire and has a central depression engageable with the balking shoulder of the associated pin.
Claim 8
Dependent Claim
30 words
A synchronizing mechanism according to claim 5, wherein each spring is formed from a single wire and has a central depression engageable with the balking shoulder of the associated pin.
Claim 9
Dependent Claim
37 words
The synchronizing mechanism defined in claim 1 wherein said resilient means comprises spring means mounted on the clutching member, said spring means acting circumferentially of the clutch to normally centralize said pins in the respective clearance holes.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |