Patent US4089398A successfully refreshed from Google Patents.
US4089398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic releasing lock
Assignee: POWER-TECH INTERNATIONAL Inc A CORP OF MICHIGAN
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Filing: 1977-04-04
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Granted: 1978-05-16
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Expires: 1997-04-04
Abstract
Abstract An automatically releasing lock system is disclosed for use on a motor having an output shaft with a resiliently biased sliding engagement member on the shaft, biased toward engagement with a driven shaft. The system utilizes a locking recess formmed in the engagement member with cam surfaces formed therein, and detent rods resiliently biased into engagement in the engagement member recess.
Inventors
- 👤 Andrew Stratienko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:44
CPC Classifications
F; F16; F16D; F16D21/00; F16D21/02; F16D21/06; F16D27/00; F16D27/10; F16D27/118; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/05
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
In a drive system having a power shaft and a power transfer clutch slidably mounted on said power shaft; a locking system for locking said clutch in a retracted position on said shaft only while it is non-rotating, said locking system comprising: a peripheral locking recess formed on said power transfer clutch and having cam means formed therein; means continuously biasing said clutch toward a non-retracted position; a plurality of resiliently biased detent plungers arranged in a fixed radial position for engagement in said locking recess; and, said detent plungers being displaced axially from each other.
Claim 2
Dependent Claim
96 words
In a drive system having a power shaft and a power transfer clutch slidably mounted on said power shaft; a locking system for locking said clutch in a retracted position on said shaft only while it is non-rotating, said locking system comprising: a peripheral locking recess formed on said power transfer clutch and having cam means formed therein; means continuously biasing said clutch toward a non-retracted position; a plurality of resiliently biased detent plungers arranged in a fixed radial position for engagement in said locking recess; and, said detent plungers being displaced axially from each other.
Claim 3
Dependent Claim
28 words
The locking system of claim 1 wherein said detent plungers are two in number, and said cam lobes having a different radial spacing than said two detent plungers.
Claim 4
Dependent Claim
113 words
In a power transfer system having a housing, a driving shaft, slidable transfer means on said shaft, and a driven shaft arranged to be operably connected by said transfer means to said driving shaft, the improvement comprising: a locking channel formed in the outer radial surface of said transfer means; raised shoulder means in said locking channel extending radially outward as far as the outer radial surface of said transfer means; resilient detent means in said housing and arranged to project radially inward therein, said detent means adapted to engage said locking channel; and, resilient biasing means on said driving shaft arranged to bias said transfer means into engagement with said driven shaft.
Claim 5
Dependent Claim
113 words
In a power transfer system having a housing, a driving shaft, slidable transfer means on said shaft, and a driven shaft arranged to be operably connected by said transfer means to said driving shaft, the improvement comprising: a locking channel formed in the outer radial surface of said transfer means; raised shoulder means in said locking channel extending radially outward as far as the outer radial surface of said transfer means; resilient detent means in said housing and arranged to project radially inward therein, said detent means adapted to engage said locking channel; and, resilient biasing means on said driving shaft arranged to bias said transfer means into engagement with said driven shaft.
Claim 6
Dependent Claim
35 words
The power transfer system of claim 3 wherein said detent means comprises a detent housing having a slidable detent rod extending outward therefrom, and resilient means in said housing continuously biasing said rod outward therefrom.
Claim 7
Dependent Claim
27 words
The power transfer system of claim 3 wherein said detent means comprises a plurality of resiliently biased detent mechanisms spaced radially and axially apart from one another.
Claim 8
Dependent Claim
45 words
The power transfer system of claim 5 wherein said detent mechanisms number two, spaced approximately 90° apart radially; and said raised shoulder means number two, spaced approximately 180° apart, with a radial outer surface substantially flush with the radial outer surface of said transfer means.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |