Patent US3166972A successfully refreshed from Google Patents.
US3166972A
Expired / Lapsed
US
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Assignee: Illinois Tool Works Inc
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Filing: 1961-06-05
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Granted: 1965-01-26
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Expires: 1981-06-05
Abstract
No abstract record available.
Inventors
- 👤 George M Rapata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:18
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/10; F16B19/1027; F16B19/1036; F16B19/1081; Y; Y10; Y10S; Y10S411/00; Y10S411/904; Y10S411/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
220 words
A DEVICE OF THE TYPE DESCRIBED FOR APPLICATION TO A WORK STRUCTURE HAVING AN APERTURE THERETHROUGH COMPRISING A RESILIENT PLASTIC MEMBER INCLUDING A HEAD PORTION FOR OVERLYING ONE SIDE OF A WORK STRUCTURE AND A HOLLOW EXPANDABLE SHANK PORTION EXTENDING AXIALLY FROM SAID HEAD PORTION FOR INSERTION THROUGH THE WORK STRUCTURE APERTURE, SAID MEMBER HAVING AN AXIAL OPENING THROUGH SAID HEAD PORTION AND INTO SAID SHANK PORTION, AN AXIALLY EXTENDING EXPANDER PIN ELEMENT CENTRALLY LOCATED WITHIN SAID HOLLOW SHANK PORTION AND SPACED FROM INNER SURFACES OF SIDE WALLS OF SAID SHNK PORTION, MEANS CONNECTING AN ENTERING END OF SAID PIN ELEMENT WITH AN ENTERING END OF SAID SHANK PORTION, SAID PIN ELEMENT INCLUDING A FREE END EXTENDING ADJACENT TO SAID HEAD PORTION, AND A RESILIENT EXPANDER ELEMENT INSERTABLE THROUGH SAID OPENING IN SAID HEAD PORTION AND HAVING A GENERALLY CENTRALLY LOCATED OPENING THEREIN FOR RECEIVING SAID PIN ELEMENT, ONE OF SAID ELEMENTS BEING TAPERED FOR CAUSING EXPANSION OF SAID EXPANDER ELEMENT AND SAID SHANK PORTION UPON APPLICATION OF THE EXPANDER ELEMENT TELESCOPICALLY OVER SAID PIN ELEMENT, SAID SIDE WALL OF SAID SHANK PORTION INCLUDING GENERALLY AXIALLY EXTENDING FLUTE MEANS FOR FACILITATING EXPANSION OF THE SHANK PORTION, SAID SHANK PORTION INCLUDING A GENERALLY DISH-SHAPED TRANSVERSE WALL AT AN ENTERING EXTREMITY THEREOF, AND SAID FLUTE MEANS EXTENDING PARTIALLY INTO SAID TRANSVERSE WALL.
Claim 2
Independent Claim
220 words
A DEVICE OF THE TYPE DESCRIBED FOR APPLICATION TO A WORK STRUCTURE HAVING AN APERTURE THERETHROUGH COMPRISING A RESILIENT PLASTIC MEMBER INCLUDING A HEAD PORTION FOR OVERLYING ONE SIDE OF A WORK STRUCTURE AND A HOLLOW EXPANDABLE SHANK PORTION EXTENDING AXIALLY FROM SAID HEAD PORTION FOR INSERTION THROUGH THE WORK STRUCTURE APERTURE, SAID MEMBER HAVING AN AXIAL OPENING THROUGH SAID HEAD PORTION AND INTO SAID SHANK PORTION, AN AXIALLY EXTENDING EXPANDER PIN ELEMENT CENTRALLY LOCATED WITHIN SAID HOLLOW SHANK PORTION AND SPACED FROM INNER SURFACES OF SIDE WALLS OF SAID SHNK PORTION, MEANS CONNECTING AN ENTERING END OF SAID PIN ELEMENT WITH AN ENTERING END OF SAID SHANK PORTION, SAID PIN ELEMENT INCLUDING A FREE END EXTENDING ADJACENT TO SAID HEAD PORTION, AND A RESILIENT EXPANDER ELEMENT INSERTABLE THROUGH SAID OPENING IN SAID HEAD PORTION AND HAVING A GENERALLY CENTRALLY LOCATED OPENING THEREIN FOR RECEIVING SAID PIN ELEMENT, ONE OF SAID ELEMENTS BEING TAPERED FOR CAUSING EXPANSION OF SAID EXPANDER ELEMENT AND SAID SHANK PORTION UPON APPLICATION OF THE EXPANDER ELEMENT TELESCOPICALLY OVER SAID PIN ELEMENT, SAID SIDE WALL OF SAID SHANK PORTION INCLUDING GENERALLY AXIALLY EXTENDING FLUTE MEANS FOR FACILITATING EXPANSION OF THE SHANK PORTION, SAID SHANK PORTION INCLUDING A GENERALLY DISH-SHAPED TRANSVERSE WALL AT AN ENTERING EXTREMITY THEREOF, AND SAID FLUTE MEANS EXTENDING PARTIALLY INTO SAID TRANSVERSE WALL.
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) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |