Patent US3825290A successfully refreshed from Google Patents.
US3825290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding door lock bar apparatus
Assignee: TAYLOR RAYMOND R 6816 EAST 95TH STREET TULSA OK
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Filing: 1972-07-13
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Granted: 1974-07-23
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Expires: 1992-07-13
Abstract
Abstract A sliding door security lock is provided comprising at least one pair of rigid bars hingedly secured to each other. Where there is only one sliding panel in the door, one end of one of the bars is rigidly secured to a non-movable portion of the frame. The furthest end of the other bar is rigidly secured to the frame of the slidable panel. The two remaining adjacent ends of the two bars are pivotally secured to each other. When there are two sliding panels in the door, there will be two pairs of the hinged bars having the same general arrangement as described hereinabove with the adjacent ends of each of said pair of bars being hingedly secured to each other as well as to the frame of the second slidable glass panel. The hinged bars are arranged to fold in order to permit the door to open and to automatically lock in an unfolded or linear condition in order to maintain the door closed.
Inventors
- 👤 R Messina
- 👤 V Messina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:31
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/08; E05B65/0888; Y; Y10; Y10S; Y10S292/00; Y10S292/46; Y10T; Y10T292/00; Y10T292/28; Y10T292/282; Y10T292/2935; Y10T292/294
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
256 words
A locking device for a panel that is slidable relative to a non-movable member, said locking device comprising; a. first elongated bar means including means for mounting a first end thereof to the non-movable member; b. second elongated bar means including means for mounting a first end thereof to the sliding panel whereby the second ends of said first and second bar means are in opposition to each other; c. means for hingability connecting the second end of said first and second bar means to each other; d. a plunger-like member mounted on one of said bar means proximate the second end thereof, said other bar means having a recess in the second end thereof for receiving said plungerlike member; e. spring means for normally biasing said plunger-like member in the direction of the recess whereby said first and second bar means are co-linear and are locked to each other to thereby prevent the slidable panel from moving relative to the nonmovable member; f. means for retracting said plunger from the recess whereby the locking device may be unlocked to thereby permit relative movement between the slidable panel and the non-movable member; and g. a housing secured to said bar means for supporting said plunger-like member and said spring-means, said housing being U-shaped for supporting said plunger-like member in two spaced apart planes, said bar means supporting said plunger-like member further including means for supporting said plunger-like member in two other spaced apart planes that are at right angles to said first two spaced apart planes.
Claim 2
Dependent Claim
256 words
A locking device for a panel that is slidable relative to a non-movable member, said locking device comprising; a. first elongated bar means including means for mounting a first end thereof to the non-movable member; b. second elongated bar means including means for mounting a first end thereof to the sliding panel whereby the second ends of said first and second bar means are in opposition to each other; c. means for hingability connecting the second end of said first and second bar means to each other; d. a plunger-like member mounted on one of said bar means proximate the second end thereof, said other bar means having a recess in the second end thereof for receiving said plungerlike member; e. spring means for normally biasing said plunger-like member in the direction of the recess whereby said first and second bar means are co-linear and are locked to each other to thereby prevent the slidable panel from moving relative to the nonmovable member; f. means for retracting said plunger from the recess whereby the locking device may be unlocked to thereby permit relative movement between the slidable panel and the non-movable member; and g. a housing secured to said bar means for supporting said plunger-like member and said spring-means, said housing being U-shaped for supporting said plunger-like member in two spaced apart planes, said bar means supporting said plunger-like member further including means for supporting said plunger-like member in two other spaced apart planes that are at right angles to said first two spaced apart planes.
Claim 3
Dependent Claim
28 words
The locking device in accordance with claim 1 where said plunger-like member is mounted on said second bar means and the recess is in said first bar means.
Claim 4
Dependent Claim
19 words
The locking device in accordance with claim 1 wherein the second end of said first bar means is beveled.
Claim 5
Dependent Claim
37 words
The locking device in accordance with claim 1 wherein said second bar means is comprised of two, laterally spaced apart bars between which the second end of said first bar means fits when in the locked condition.
Claim 6
Dependent Claim
77 words
The locking device in accordance with claim 1 wherein said mounting means comprise U-shaped brackets each having fastener receiving apertures in two adjacent legs and access apertures in the third leg in opposition to the apertures in one of the first two legs, said two opposed legs further including aligned openings, said first and said second bar means being mounted on said brackets by a fastener extending through the second end thereof and through said aligned openings.
Claim 7
Dependent Claim
41 words
The locking device in accordance with claim 5 wherein there is further included a low friction spacer extending between the opposed legs of said brackets, the first end of said first and said second brackets being laterally slidable on said spacer.
Claim 8
Dependent Claim
37 words
The locking device in accordance with claim 1 wherein said retracting means comprises a pin secured to said plunger-like member, said pin being axially displaceable relative to said bar means in which said plunger-like member is mounted.
Claim 9
Dependent Claim
32 words
The locking device in accordance with claim 1 wherein there is further included means for selectively preventing the locking of said first and said second bar means with respect to each other.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |