US3782838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft assembly
Assignee: TURBOSERVICE
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Filing: 1970-10-30
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Granted: 1974-01-01
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Expires: 1990-10-30
Abstract
Abstract A latch for connecting two axially aligned shafts is movable between a position connecting the shafts to a position where the shafts are disconnected. A piston is positioned in a cylinder so changes in ambient pressure will move the piston and move the latch between the two positions.
Inventors
- 👤 W Tiraspolsky
- 👤 R Rouviere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:01
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/26; B23B31/261; B23B31/265; F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/092
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
220 words
A shaft assembly comprising first and second shaft means adapted to be coupled together and intended to be subjected to the action of varying or different ambient conditions, a coupling device including a locking head carried by said first shaft means, a recess in said second shaft means so as to define a chamber open at one end only, a piston in said chamber closing the open end thereof and having first and second active faces, said first active face forming one interior end wall of the closed chamber and said second active face being exposed to the exterior of the chamber and to ambient pressure outside the chamber, latching elements located on the side of the piston exposed to the exterior of the closed chamber and carried by the piston for movement by the piston into and out of engagement with the locking head to connect and disconnect the two shafts, means located in the closed chamber for applying a resilient force to said first piston face urging the piston and hooking elements out of engagement with the locking head, whereby a predetermined ambient pressure acting against the second piston face will move the piston into the chamber against the resilient force to move the hooking elements into engagement with the locking head to couple the two shafts together.
Claim 2
Dependent Claim
220 words
A shaft assembly comprising first and second shaft means adapted to be coupled together and intended to be subjected to the action of varying or different ambient conditions, a coupling device including a locking head carried by said first shaft means, a recess in said second shaft means so as to define a chamber open at one end only, a piston in said chamber closing the open end thereof and having first and second active faces, said first active face forming one interior end wall of the closed chamber and said second active face being exposed to the exterior of the chamber and to ambient pressure outside the chamber, latching elements located on the side of the piston exposed to the exterior of the closed chamber and carried by the piston for movement by the piston into and out of engagement with the locking head to connect and disconnect the two shafts, means located in the closed chamber for applying a resilient force to said first piston face urging the piston and hooking elements out of engagement with the locking head, whereby a predetermined ambient pressure acting against the second piston face will move the piston into the chamber against the resilient force to move the hooking elements into engagement with the locking head to couple the two shafts together.
Claim 3
Dependent Claim
61 words
The shaft assembly of claim 1 in which said latching elements include a plurality of spring arms having hook-shaped parts on their ends and in which a cam means is provided in said recess to move the hook-shaped parts into holding engagement with the locking head when the piston is moved into the chamber a predetermined distance by said ambient pressure.
Claim 4
Dependent Claim
21 words
A shaft assembly according to claim 1, wherein the means in the chamber for exerting a resilient force comprise spring means.
Claim 5
Dependent Claim
22 words
A shaft assembly according to claim 1, wherein the means in the chamber for exerting a resilient force comprise a compressible fluid.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |