US3301140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible shielding means
Assignee: Duff Norton Co Inc
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Filing: 1965-05-03
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Granted: 1967-01-31
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Robert J Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:15
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/26; F15B15/261; F16; F16J; F16J3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN A MECHANISM OF THE TYPE HAVING SPACED PORTIONS BETWEEN WHICH AN INTERMEDIATE ELEMENT IS PROVIDED WITH MEANS FOR MOUNTING SAID ELEMENT FOR LINEAR AS WELL AS ROTARY MOVEMENT WITH RESPECT TO THE AXIS OF LINEAR MOVEMENT, SHIELDING MEANS COMPRISING A PAIR OF LINEARLY EXPANSIBLE SHIELD MEMBERS ENCLOSING THE MECHANISM BETWEEN SAID SPACED PORTIONS AND THE INTERMEDIATE ELEMENT, EACH SAID SHIELD MEMBER HAVING AN END FIXED TO THE PERIPHERY OF ONE OF SAID SPACED PORTIONS, AND MEANS FORMED IN THE PERIPHERY OF SAID INTERMEDIATE ELEMENT AT OPPOSITE ENDS THEREOF FOR RECEIVING AND RETAINING THE OTHER ENDS OF SAID SHIELD MEMBERS IN SEALING DISPOSITION, SAID RECEIVING AND RETAINING MEANS RETAINING SAID SHIELD MEMBER ROTATABLY FOR RELATIVE ROTATION OF SAID INTERMEDIATE ELEMENT WITH RESPECT TO SAID SHIELD MEMBER AT SAID RECEIVING AND RETAINING MEANS.
Claim 2
Dependent Claim
132 words
IN A MECHANISM OF THE TYPE HAVING SPACED PORTIONS BETWEEN WHICH AN INTERMEDIATE ELEMENT IS PROVIDED WITH MEANS FOR MOUNTING SAID ELEMENT FOR LINEAR AS WELL AS ROTARY MOVEMENT WITH RESPECT TO THE AXIS OF LINEAR MOVEMENT, SHIELDING MEANS COMPRISING A PAIR OF LINEARLY EXPANSIBLE SHIELD MEMBERS ENCLOSING THE MECHANISM BETWEEN SAID SPACED PORTIONS AND THE INTERMEDIATE ELEMENT, EACH SAID SHIELD MEMBER HAVING AN END FIXED TO THE PERIPHERY OF ONE OF SAID SPACED PORTIONS, AND MEANS FORMED IN THE PERIPHERY OF SAID INTERMEDIATE ELEMENT AT OPPOSITE ENDS THEREOF FOR RECEIVING AND RETAINING THE OTHER ENDS OF SAID SHIELD MEMBERS IN SEALING DISPOSITION, SAID RECEIVING AND RETAINING MEANS RETAINING SAID SHIELD MEMBER ROTATABLY FOR RELATIVE ROTATION OF SAID INTERMEDIATE ELEMENT WITH RESPECT TO SAID SHIELD MEMBER AT SAID RECEIVING AND RETAINING 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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |