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US4281865A Expired / Lapsed US ⏱️ 0.0 years remaining

Interior door security

Assignee: Individual
•
Filing: 1979-11-16
•
Granted: 1981-08-04
•
Expires: 1999-11-16
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Abstract

Abstract An interior door knob security cinch loop comprising, a rectangular shaped plate bent at appointed and spaced apart relationship to form a vertical back with a top and base horizontal extensions wherein, said top has a triangularly shaped eyelet extending upward from said top and open vertically of said horizontal top. The base extension extends beyond said top extension slightly and has its forward edge diagonally planed inward to form a chisel edge and the inner said base has a predetermined number of inwardly punched out, triangularly shaped, grip points facing the vertical back of said plate. A wire of high tensile strength is threaded through the aforesaid eyelet and the ends of said wire are secured together to form an extended loop. A metal plate formed in the shape of a vertical rectangle which is inwardly open and having a retainer shaft extending from said rectangular side horizontally to house an anchor hook and/or a combination anchor device which uses a circular elastic loop. A dual door knob anchor loop, dual anchor hooks and/or dual combination anchor devices and dual elastic loops.

Inventors

  • 👤 James A. Nicholson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 14:04
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/18; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/087; Y10T292/20; Y10T292/228

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 86 words
A door knob security cinch loop comprising an elongated member which forms a loop shaped to extend over a knob and being secured at a point spaced therefrom to a connection and pivot means; an elongated hook pivotally secured to said pivot means and shaped to fit about a shank of said knob; an opposite end of said security cinch loop comprising anchor means; including a part of said elongated member, and including means shaped for securing said opposite end to a structure adjacent said door.
Claim 2
Dependent Claim 86 words
A door knob security cinch loop comprising an elongated member which forms a loop shaped to extend over a knob and being secured at a point spaced therefrom to a connection and pivot means; an elongated hook pivotally secured to said pivot means and shaped to fit about a shank of said knob; an opposite end of said security cinch loop comprising anchor means; including a part of said elongated member, and including means shaped for securing said opposite end to a structure adjacent said door.
Claim 3
Dependent Claim 47 words
The structure of claim 1, wherein said means shaped for securing said opposite end comprises an anchor plate secured to said part of said elongated member and shaped to form a hook having a chisel edge to fit behind an adjacent structure such as a door trim.
Claim 4
Dependent Claim 37 words
The structure of claim 1, wherein said means shaped for securing said opposite end is formed by said part of said elongated member shaped to fit over a second door knob to hold two adjacent doors closed.

References Cited (Backward Citations)

US765658A Cited
US827624A Cited
US3451708A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-08-03 1985-02-02 1985-08-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-08-03 1989-02-02 1989-08-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-08-03 1993-02-02 1993-08-04 $7700.00 Window Closed / Lapsed

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