US4005890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock strike guard
Assignee: Schlage Lock Co LLC
•
Filing: 1975-10-15
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Granted: 1977-02-01
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Expires: 1995-10-15
Abstract
Abstract A door lock strike guard is for use with a door jamb having a strike pocket therein and overlying a frame member. The guard itself is a flat metal bar having at one end a panel adapted to be disposed at one side of the strike pocket and having at the other end a leg adapted to be driven into a bore in the frame member. Between the panel and the leg there is an offset strap so that the leg is well displaced from the edge of the frame member. A lateral force on the strike pocket wall, normally borne only by the part of the jamb bounding the strike pocket, is additionally borne by the panel and at least in part is transferred to the frame member. In a modification, a screw regulates the penetration of the leg into the bore.
Inventors
- 👤 Robert F. Murch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:53
CPC Classifications
E; E05; E05B; E05B15/00; E05B15/02; E05B15/0205; Y; Y10; Y10T; Y10T292/00; Y10T292/68; Y10T292/79
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
214 words
In a door lock strike guard arrangement having a frame member and a door jamb adjacent and overlying the same to define an edge of a door opening; an opening through said jamb having a side thereof adjacent one edge of said jamb and defining a strike pocket facing said door opening; an elongated opening in said frame member generally parallel to said side of said pocket but spaced therefrom in a direction away from said one edge of said jamb and being aligned with a portion of said pocket; a strike guard comprising a unitary substantially rigid strike guard member having a panel portion lying adjacent said one side of said pocket, an offset portion substantially perpendicular to said panel portion at the edge thereof nearest said frame member and spaced from said frame member, and a leg portion generally parallel to said panel portion extending from said offset portion at the edge thereof farthest from said one edge into said elongated opening and interengaging said frame member with a force fit whereby any force applied to said panel portion in a direction toward said one edge of said jamb is transmitted to and resisted by said frame member, and including abutment means on said frame member engaging and buttressing said offset portion.
Claim 2
Dependent Claim
214 words
In a door lock strike guard arrangement having a frame member and a door jamb adjacent and overlying the same to define an edge of a door opening; an opening through said jamb having a side thereof adjacent one edge of said jamb and defining a strike pocket facing said door opening; an elongated opening in said frame member generally parallel to said side of said pocket but spaced therefrom in a direction away from said one edge of said jamb and being aligned with a portion of said pocket; a strike guard comprising a unitary substantially rigid strike guard member having a panel portion lying adjacent said one side of said pocket, an offset portion substantially perpendicular to said panel portion at the edge thereof nearest said frame member and spaced from said frame member, and a leg portion generally parallel to said panel portion extending from said offset portion at the edge thereof farthest from said one edge into said elongated opening and interengaging said frame member with a force fit whereby any force applied to said panel portion in a direction toward said one edge of said jamb is transmitted to and resisted by said frame member, and including abutment means on said frame member engaging and buttressing said offset portion.
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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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |