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Publication numberUS3040555 A
Publication typeGrant
Publication dateJun 26, 1962
Filing dateOct 21, 1960
Priority dateOct 21, 1960
Publication numberUS 3040555 A, US 3040555A, US-A-3040555, US3040555 A, US3040555A
InventorsWartian George
Original AssigneeWartian Lock Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sliding door latch
US 3040555 A
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Description  (OCR text may contain errors)

June 26, 1962 G WARTIAN SLIDING DOOR LATCH Filed 001;. 21, 1960 INVENTOR. 'ear ge War zlzx BY M4 3,94%,555 Patented June 26, 1962 3,04e,555 IDXNG DQUR LATCH George Wartian, Detroit, Mich, assignor to Wartian Lock onltlpany, St. Clair Shores, Mic a corporation of ac igan Filed Oct. 21, 19643, Ser. No. 64,132

Claims. (Cl. 7097) Another object of the invention is to provide a novel door latch and keeper construction and a locking mechanism associated therewith.

ther and further objects of the invention will be apparting from the scope of the present invention as set forth in the appended claims.

In the drawing:

l is an elevational view of a sliding door provided with the latch mechanism of the present invention; 2 is an end elevational view on an enlarged scale taken on line 2-2 of FIG. 1; p

G. 3 is a sectional view taken on line 33 of FIG. 2; FIG. 4 is a view similar to FIG. 3 showing a different relationship of the keeper and latch bolt; and

FIG. 5 is a sectional view taken on line 5-5 of FIG. 3.

keeper is provided extending keeper portion 42 which is offset from the base portion 36 so as to be spaced from position thereof shown in FIG.

p The latch bolt 44 is provided with a downwardly openg slot 56 adapted to be engaged by the outer surface 60 of the uplatch bolt has the portion 62 engaging behind the upwardly extending portion 42 of the keeper and disposed between such portion of the keeper and the door jamb 12.

of its operating member 72.

The latch bolt is provided with a projection 76 on its ing plate 86 and is provided on its inner end with a rib- 92 While in the illustrated embodiment of the invention the keeper is shown latch mechanism to the door, it will be apparent that this 'red.

the purview of the following claims.

Iclaim: 1. In a latch for a sliding door cooperable with a keeper having an upwardly extending keeper portion, a hollow casing, a latch bolt pivoted in said casing on a 4- horizontal axis, a cam surface on said latch bolt engagea latch bolt pivoted in said casing, a cam surface on said able with said upwardly extending portion of said keeper latch bolt engageable with said keeper portion of said upon closing of the door to pivot said latch bolt to its keeper upon closing of the door to pivot said latch bolt latched position, said latch bolt having a downwardly to its latched position, said latch bolt having a slot therein opening slot there-in one edge of which provides Said 5 one edge of which provides said cam surface, the keeper cam surface, the upwardly extending portion of said portion being received within said slot when the latch bolt keeper being received within said slot when the latch bolt is in its latched position so that a portion of said latch is in its latched position so that a portion of said latch bolt is disposed between said portion of said keeper and bolt engages behind said portion of said keeper whereby said door jarnb, a lock plate slidably mounted within said the engagement of said portion of said latch bolt with casing and having a portion movable into engagement said keeper pivots said latch bolt to its unlatched position with said latch bolt to prevent pivoting thereof when said upon opening of the door, a lock plate slidably mounted latch bolt is in its latched position, an elongated opening within said casing and having a portion movable into in said lock plate, a rotatable operating member extending engagement with said latch bolt to prevent pivoting therethrough said opening in said lock plate and journaled in of when said latch bolt is in its latched position, a rotatthe opposing side walls of said casing, said operating able operating member extending through said lock plate member having a radially extending arm thereon engagand journaled in the opposing side walls of said casing ing said lock plate and operable upon rotation thereof to and operable upon rotation thereof to slide said lock plate slide said lock plate into and out of said engagement into and out of said engagement with said latch bolt, and with said latch bolt, handles adapted to be mounted on manually operable means engageable with said operating opposite sides of the door, a manually operable member member for rotating the same to lock and unlock said on one of said handles engageable with said operating latch bolt. member for rotating the same, and a key-operated mem- 2. A latch according to claim 1 including yieldable ber mounted on the other handle and engageable with detent means between said lock plate and said casing for said operating member for rotating the same. lgglsdtrirglssard lock plate in said locked and unlocked References Cited in the me of this patent 3. In a latch for a sliding door a keeper having a base UNITED STATES PATENTS portion for attaching said keeper to the door jamb and a 1 596 24 Dunn Aug, 17 192 keeper portion offset from said base portion toward the 2 63 071 Adams 1 Feb, 2 1954 door, a hollow casing adapted to be mounted on the door, 2,917,915 R in an Dec, 22, 1959

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1596242 *Jul 10, 1925Aug 17, 1926George W DunnDoorlock
US2668071 *Apr 27, 1948Feb 2, 1954Adams Rite Mfg CompanySliding door lock mechanism
US2917915 *Jun 6, 1955Dec 22, 1959American Hardware CorpFolding door lock
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3104902 *Sep 14, 1961Sep 24, 1963 Latch mechanism
US3228718 *Oct 11, 1962Jan 11, 1966Gen Motors CorpSafety door latch
US3325203 *May 27, 1965Jun 13, 1967Overhead Door CorpSliding door lock
US3352586 *Sep 20, 1965Nov 14, 1967Paulyne Hakanson MLocking device for sliding windows and doors
US3405961 *Nov 23, 1966Oct 15, 1968Albert M. SandersLock for sliding door
US3528694 *Apr 11, 1968Sep 15, 1970Harley Frank BernardReleasable fasteners and release units incorporating such fasteners
US3596960 *May 15, 1969Aug 3, 1971Volkswagenewerk AgAuxiliary lock for doors of motor vehicles
US3600019 *Apr 11, 1969Aug 17, 1971Fujisash Ind LtdLockable latch mechanism for slidable sashes
US4103946 *Jan 26, 1977Aug 1, 1978Schlegel (Uk) LimitedFlush set lock for sliding doors
US4208837 *Oct 16, 1978Jun 24, 1980Alvis NeelyWindow guard having boxed release
US4648640 *Jul 15, 1985Mar 10, 1987Giordano Joseph FLockable sliding gate latching device
US4687237 *May 1, 1986Aug 18, 1987Southco, Inc.Over-center toggle latch
US4973091 *Sep 20, 1989Nov 27, 1990Truth IncorporatedSliding patio door dual point latch and lock
US5127691 *Jan 10, 1991Jul 7, 1992Trine Products Corp.Strike with rectilinearly movable keeper locking member
US5573287 *Jul 10, 1995Nov 12, 1996Takigen Manufacturing Co. Ltd.Bilateral-type door locking handle assembly
US5775749 *Aug 8, 1996Jul 7, 1998Andersen CorporationLatch keeper assembly
US5934719 *Nov 19, 1997Aug 10, 1999Athanasios; LeontaridesExternal lock assembly for sliding doors and the like cooperating with a tubular frame mounted element
US6010168 *Nov 12, 1996Jan 4, 2000Johnson; James B.High security rotary latch
US6327879Sep 11, 1997Dec 11, 2001Pella CorporationLocking mechanism for sliding glass doors
US7032417 *Sep 11, 2003Apr 25, 2006Assa Abloy Financial Services AbLock mechanism
US7578531 *Jun 28, 2000Aug 25, 2009Athanasios LeontaridisLock assembly for sliding door/window panels
US8127578 *Jan 31, 2007Mar 6, 2012D & D Group Pty LtdLocking gate latches
US20120293055 *May 11, 2012Nov 22, 2012Wistron CorporationDoor assembly and casing having the same
EP0677132A1 *Oct 5, 1994Oct 18, 1995Ladislav Stephan KarpisekImprovements in universal locks
Classifications
U.S. Classification70/97, 292/DIG.460, 292/207, 292/106, 292/99, 292/129, 292/198
International ClassificationE05C3/24, E05B65/08
Cooperative ClassificationY10S292/46, E05C3/24, E05B65/0811
European ClassificationE05B65/08B, E05C3/24