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US3820175A Expired / Lapsed US ⏱️ 0.0 years remaining

Quick change hinge assembly

Assignee: INGRESS Manufacturing CO
•
Filing: 1972-02-23
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Granted: 1974-06-28
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Expires: 1992-02-23
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Abstract

Abstract A QUICK CHANGE HINGE ASSEMBLY FOR PIVOTALLY COUPLING MEMBERS. A PAIR OF HINGE BLOCKS MOUNTED TO A FIXTURE HACE LATERALLY EXTENDING PIVOT PINS. A FIRST MEMBER HAVING LATERALLY EXTENDING SOCKETS WITH ENTRY SLOTS IS PIVOTALLY MOUNTED TO A PAIR OF THE INWARDLY EXTENDING PINS MOUNTED TO THE HINGE BLOCKS. A SECOND MEMBER IS PIVOTALLY MOUNTED TO THE OUTWARDLY EXTENDING PIVOT PINS MOUNTED TO THE HINGE BLOCKS. ANOTHER EMBODIMENT HAS HORIZONTALLY SPACED HINGED BLOCKS MOUNTED TO A FIXTURE WITH THE HINGE BLOCKS HAVING LATERALLY EXTENDING SOCKETS. A FIRST MEMBER HAS OUTWARDLY EXTENDING PIVOT PINS RECEIVED IN THE SOCKETS WHEREAS A SECOND MEMBER HAS INWARDLY EXTENDING PIVOT PINS RECEIVED IN THE SOCKETS. A THIRD EMBODIMENT HAS A PAIR OF HINGE BLOCKS WITH LATERALLY EXTENDING SOCKETS AND ENTRY SLOTS PIVOTALLY RECEIVING PIVOT PINS MOUNTED TO A FIRST MEMBER. ADDITIONAL PINS ARE MOUNTED TO THE FIRST MEMBER AND EXTEND OUTWARDLY INTO LATERALLY EXTENDING SOCKETS AND ENTRY SLOTS OF A SECOND MEMBER. IN THE PREFERRED EMBODIMENT, THE FIRST AND SECOND MEMBERS ARE PIVOTALLY MOUNTED TO A SINGLE PIN WHICH IS REMOVABLY MOUNTED TO A PAIR OF SPACED APART AND UNCONNECTED HINGE BLOCKS. THE PIN HAS CRESCENT SHAPED PORTIONS RECEIVED BY LATERALLY EXTENDING SOCKETS AND CHANNELS OF THE MEMBERS.

Inventors

  • 👤 V Waldon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-10 02:30
CPC Classifications
A; A47; A47K; A47K13/00; A47K13/12

Claims Analysis

Total Claims: 0
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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) 1977-06-27 1977-12-27 1978-06-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-27 1981-12-27 1982-06-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-27 1985-12-27 1986-06-28 $7700.00 Window Closed / Lapsed

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