US3768285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double door lock
Assignee: Taylor Lock Co
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Filing: 1971-11-15
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Granted: 1973-10-30
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Expires: 1991-11-15
Abstract
Abstract A double cylinder door lock wherein a bolt is slidable in a housing for extension and retraction, the bolt''s sliding being effected by operating means within the housing carrying a receiver, and a pair of separate key controlled mechanisms having respective engaging means selectively entering the receiver to effect a desired bolt movement with the nonentering engaging means permitting the desired bolt movement.
Inventors
- 👤 J Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:07
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; Y; Y10; Y10S; Y10S70/00; Y10S70/60; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5319; Y10T70/5341; Y10T70/70; Y10T70/7441; Y10T70/7751
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
147 words
A double door lock comprising a housing to be carried by a door and having spaced outer and inner walls, a bolt mounted in the housing between said walls for shifting movement between locked and unlocked positions, bolt operating means for effecting said shifting movement, a receiver carried by said bolt operating means and opening transversely of the direction of shifting movement, a pair of key controlled mechanisms for location on opposite sides of a door, and a pair of engaging means in said housing respectively associated with said key controlled mechanisms and each selectively engageable into said receiver to effect a desired bolt movement and disengageable from said receiver to permit said desired bolt movement effected by the other engaging means, said pair of engaging means being mounted for independent axially aligned rotation in respective housing walls and retained therein by limiting engagement with each other.
Claim 2
Dependent Claim
147 words
A double door lock comprising a housing to be carried by a door and having spaced outer and inner walls, a bolt mounted in the housing between said walls for shifting movement between locked and unlocked positions, bolt operating means for effecting said shifting movement, a receiver carried by said bolt operating means and opening transversely of the direction of shifting movement, a pair of key controlled mechanisms for location on opposite sides of a door, and a pair of engaging means in said housing respectively associated with said key controlled mechanisms and each selectively engageable into said receiver to effect a desired bolt movement and disengageable from said receiver to permit said desired bolt movement effected by the other engaging means, said pair of engaging means being mounted for independent axially aligned rotation in respective housing walls and retained therein by limiting engagement with each other.
Claim 3
Dependent Claim
69 words
A double door lock according to claim 1, said operating means comprising an arcuate link having one end pivotally connected to said bolt for movement therewith And having its other end extending generally longitudinally of bolt movement and partially about said engaging means in one bolt position, and said receiver being on the other end of said link for shifting movement with said bolt and swinging movement relative thereto.
Claim 4
Dependent Claim
59 words
A double door lock according to claim 2, said engaging means each being rotatable about an axis generally parallel to the pivotal connection of said link for effecting said link shifting and swinging movement and said engaging means axis intersecting the path of movement of said pivotal connection with said bolt, for maximum bolt movement by said engaging means.
Claim 5
Dependent Claim
40 words
A double door lock according to claim 3, said receiver being arranged with its opening facing circumferentially of said engaging means rotation when said bolt is in its locked and unlocked positions, for receiving said engaging means upon rotation thereof.
Claim 6
Dependent Claim
47 words
A double door lock according to claim 3, in combination with resilient means urging said link in one direction of rotation, and stop means carried by said bolt limiting link rotation in said one direction to a position with said receiver located to receive said engaging means.
Claim 7
Dependent Claim
33 words
A double door lock according to claim 3, said key controlled mechanisms each comprising a rotary cylinder, and a noncircular shank extending from each cylinder for operative association with a respective engaging means.
Claim 8
Dependent Claim
44 words
A double door lock according to claim 6, said receiver comprising a generally U-shaped member, and said engaging means comprising generally parallel pins rotatable about a single axis parallel to said pins for movement into and out of the opening of said U-shaped member.
Claim 9
Dependent Claim
85 words
A double door lock according to claim 6, said housing having a pair of aligned openings coaxial with said cylinders and spaced on opposite sides of said receiver, and said engaging means each comprising a stub shaft independently rotatable in a respective one of said aligned openings, said parallel pins being respectively carried in eccentric relation with respect to said stub shafts for engagement into and withdrawal from said receiver, said noncircular shanks extending in nonrotative relation through respective stub shafts for rotating the latter.
Claim 10
Dependent Claim
129 words
A double door lock according to claim 8, said housing comprising a generally flat hollow body having one side closed defining said outer wall and the other side open, and a separate closure member defining said inner wall engaged in closing relation with said other open body side, said pair of aligned openings being formed respectively in said closed body side and said closure member, one of said engaging means being inserted rotatably in said body side opening and enlarged inwardly thereof to prevent withdrawal therethrough, said receiver link overlying and retaining said one engaging means, and the other engaging means overlying said link and said one engaging means and rotatably entering said closure member opening, whereby said closure member effectively retains said engaging members in said assembled relation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |