Patent US3220717A successfully refreshed from Google Patents.
US3220717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring assembly
Assignee: Amsted Industries Inc
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Filing: 1964-05-25
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Granted: 1965-11-30
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Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Russell G Altherr
- 👤 John E Silvis
- 👤 Donald J Zach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:52
CPC Classifications
F; F16; F16G; F16G11/00; F16G11/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A SPRING ASSEMBLY COMPRISING A RIGID TUBE MEMBER, A RIGID ELONGATED MEMBER WITHIN THE TUBE MEMBER AND HAVING A SNUGG SLIDEABLE FIT WITHIN THE ENDS OF THE TUBE MEMBER, A FIRST ABUTMENT SURROUNDING THE TUBE MEMBER AND HAVING A SNUG SLIDEABLE FIT THEREON BETWEEN IS ENDS, AN END PLATE BEARING AGAINST ONE END OF THE ELONGATED MEMBER, A SECOND ABUTMENT FIXED ON ONE END OF THE TUBE MEMBER, SPRING MEANS COMPRESSED BETWEEN THE ABUTMENTS FOR URGING THE SECOND ABUTMENT AGAINST THE PLATE, ADJUSTABLE MEANS CONNECTING THE PLATE TO THE FIRST ABUTMENT FOR ADJUSTING THE LEAD OF SAID SPRING MEANS, A CONNECTOR MOUNTED ON THE OTHER END OF SAID TUBE MEMBER, ANOTHER CONNECTOR, MEANS CONNECTING SAID OTHER CONNECTOR TO SAID ELONGATED MEMBER COMPRISING A SCREW THREADED INTO THE END THEREOF REMOTE FROM THE FIRST CONNECTOR FOR ADJUSTING THE DISTANCE BETWEEN THE CONNECTORS WHILE THE SPRING MEANS ARE UNDER LOAD, AND LOCK NUT MEANS THREADED ON SAID SCREW FOR CLAMPING SAID END PLATE AGAINST SAID END OF THE ELONGATED MEMBER.
Claim 2
Dependent Claim
168 words
A SPRING ASSEMBLY COMPRISING A RIGID TUBE MEMBER, A RIGID ELONGATED MEMBER WITHIN THE TUBE MEMBER AND HAVING A SNUGG SLIDEABLE FIT WITHIN THE ENDS OF THE TUBE MEMBER, A FIRST ABUTMENT SURROUNDING THE TUBE MEMBER AND HAVING A SNUG SLIDEABLE FIT THEREON BETWEEN IS ENDS, AN END PLATE BEARING AGAINST ONE END OF THE ELONGATED MEMBER, A SECOND ABUTMENT FIXED ON ONE END OF THE TUBE MEMBER, SPRING MEANS COMPRESSED BETWEEN THE ABUTMENTS FOR URGING THE SECOND ABUTMENT AGAINST THE PLATE, ADJUSTABLE MEANS CONNECTING THE PLATE TO THE FIRST ABUTMENT FOR ADJUSTING THE LEAD OF SAID SPRING MEANS, A CONNECTOR MOUNTED ON THE OTHER END OF SAID TUBE MEMBER, ANOTHER CONNECTOR, MEANS CONNECTING SAID OTHER CONNECTOR TO SAID ELONGATED MEMBER COMPRISING A SCREW THREADED INTO THE END THEREOF REMOTE FROM THE FIRST CONNECTOR FOR ADJUSTING THE DISTANCE BETWEEN THE CONNECTORS WHILE THE SPRING MEANS ARE UNDER LOAD, AND LOCK NUT MEANS THREADED ON SAID SCREW FOR CLAMPING SAID END PLATE AGAINST SAID END OF THE ELONGATED MEMBER.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |