US3169757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holding and gripping device for tension compression springs
Assignee: Carl Schenck AG
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Filing: 1962-06-19
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Granted: 1965-02-16
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Expires: 1982-06-19
Abstract
No abstract record available.
Inventors
- 👤 Roder Josef
- 👤 Klein Georg
- 👤 Kunzel Karl-Heinz
- 👤 Kruger Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:16
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04; F16F1/12; F16F1/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A HOLDING AND GRIPPING DEVICE FOR SPRINGS WHICH ARE SUBJECTED TO TENSION AND TO COMPRESSION, COMPRISING RADIALLY OUTWARDLY EXPANSIBLE GRIPPING MEANS DISPOSED WITHIN A SPRING IN PRESSURE ENGAGEMENT WITH TERMINAL TURNS OF SAID SPRING ON THE INSIDE THEREOF, MEANS ENGAGEABLE WITH SAID GRIPPING MEANS FOR ADJUSTING THE RADIALLY OUTWARDLY EFFECTIVE PRESSURE EXERTED BY SAID GRIPPING MEANS ON SAID SPRING TURNS, SAID GRIPPING DEVICE BEING CONSTRUCTED TO EXERT A REACTIVE FORCE ON SAID SPRING TURNS WHICH COUNTERS THE FORCE EXERTED BY THE LOAD ON THE SPRING AND DIMINISHES PROGRESSIVELY IN AXIALLY EXTENDING INWARD DIRECTION TOWARD THE SPRING TURNS WHICH ARE FREE OF SAID GRIPPING MEANS, SAID GRIPPING DEVICE COMPRISING AN ANNULAR RADIALLY OUTWARDLY EXPANSIBLE MEMBER COMPOSED OF A PLURALITY OF PARTS, GROOVES BEING FORMED IN SAID PARTS FOR RECEIVING THE TERMINAL TURNS OF SAID SPRINGS, THE WIDTH OF SAID GROOVES INCREASING AND THE DEPTH THEREOF DECREASING IN THE INCREASING AND THE DEPTH THEREARE FREE OF SAID GRIPPING DEVICE.
Claim 2
Dependent Claim
157 words
A HOLDING AND GRIPPING DEVICE FOR SPRINGS WHICH ARE SUBJECTED TO TENSION AND TO COMPRESSION, COMPRISING RADIALLY OUTWARDLY EXPANSIBLE GRIPPING MEANS DISPOSED WITHIN A SPRING IN PRESSURE ENGAGEMENT WITH TERMINAL TURNS OF SAID SPRING ON THE INSIDE THEREOF, MEANS ENGAGEABLE WITH SAID GRIPPING MEANS FOR ADJUSTING THE RADIALLY OUTWARDLY EFFECTIVE PRESSURE EXERTED BY SAID GRIPPING MEANS ON SAID SPRING TURNS, SAID GRIPPING DEVICE BEING CONSTRUCTED TO EXERT A REACTIVE FORCE ON SAID SPRING TURNS WHICH COUNTERS THE FORCE EXERTED BY THE LOAD ON THE SPRING AND DIMINISHES PROGRESSIVELY IN AXIALLY EXTENDING INWARD DIRECTION TOWARD THE SPRING TURNS WHICH ARE FREE OF SAID GRIPPING MEANS, SAID GRIPPING DEVICE COMPRISING AN ANNULAR RADIALLY OUTWARDLY EXPANSIBLE MEMBER COMPOSED OF A PLURALITY OF PARTS, GROOVES BEING FORMED IN SAID PARTS FOR RECEIVING THE TERMINAL TURNS OF SAID SPRINGS, THE WIDTH OF SAID GROOVES INCREASING AND THE DEPTH THEREOF DECREASING IN THE INCREASING AND THE DEPTH THEREARE FREE OF SAID GRIPPING DEVICE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |