US3797868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bolt with concealed safety cable
Assignee: Individual
•
Filing: 1972-10-16
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Granted: 1974-03-19
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Expires: 1992-10-16
Abstract
Abstract A door securing bolt movable by a single knob to open, locked and safety positions. In the safety position the bolt is engaged with a cable concealed in the door jamb, the cable allowing limited opening of the door and retracting automatically when the door is closed. In one form the safety cable is incorporated in a slide bolt with an added rotary action for engaging the cable. In another form the cable is attached to a knob which is movable along a slot to the three specific positions.
Inventors
- 👤 J Carey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:53
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/36; E05C17/365; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0863; Y10T292/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
130 words
A bolt assembly, comprising, a bolt unit having means for attachment to a door, a socket unit having means for attachment to a door jamb, at least one of said units having an elongated slot, a knob slidably mounted for movement to three positions along said slot, an arm pivotally mounted in said socket unit, a cable having one end secured to said arm and being extensible from the socket unit, said arm comprising a stop for limiting extension of the cable, said knob having retaining means for engaging the other end of said cable at one of said positions, and for coupling said bolt unit and socket unit together at a second of said positions, and for uncoupling the bolt and socket units at a third of said positions.
Claim 2
Dependent Claim
130 words
A bolt assembly, comprising, a bolt unit having means for attachment to a door, a socket unit having means for attachment to a door jamb, at least one of said units having an elongated slot, a knob slidably mounted for movement to three positions along said slot, an arm pivotally mounted in said socket unit, a cable having one end secured to said arm and being extensible from the socket unit, said arm comprising a stop for limiting extension of the cable, said knob having retaining means for engaging the other end of said cable at one of said positions, and for coupling said bolt unit and socket unit together at a second of said positions, and for uncoupling the bolt and socket units at a third of said positions.
Claim 3
Dependent Claim
26 words
A bolt assembly according to claim 1, wherein said other end of the cable has a latch pin fixed thereto for engagement by said retaining means.
Claim 4
Dependent Claim
53 words
A bolt assembly according to claim 1, wherein said bolt unit includes a cylindrical barrel having said slot therein, and a bolt slidably mounted in said barrel, said knob being connected to the bolt through the slot, and said socket unit having a cylindrical socket element to receive the end of said bolt.
Claim 5
Dependent Claim
39 words
A bolt assembly according to claim 3, wherein said other end of the cable has a latch pin fixed thereto and passing through said socket element, and said bolt having a slotted end for engagement over the latch pin.
Claim 6
Dependent Claim
41 words
A bolt assembly according to claim 4, wherein said elongated slot has a rotationally offset portion to receive said knob, and the slotted end of said bolt having notched lugS for locked engagement with said latch pin in one rotated position.
Claim 7
Dependent Claim
50 words
A bolt assembly according to claim 5, wherein a portion of said socket element is separate and comprises a cap fixed to said latch pin, and the slotted end of said bolt having a reduced thickness, in said one rotated position, to pass through the opening left by said cap.
Claim 8
Dependent Claim
44 words
A bolt assembly according to claim 6, wherein said elongated slot and offset portion have recessed detents at the ends and at the junction thereof, corresponding to the said three positions of the knob, and said knob being biased to seat in said detents.
Claim 9
Dependent Claim
84 words
A bolt assembly according to claim 1, wherein said bolt unit has a bolt portion extending beyond the door, the bolt portion having an upwardly opening slot, said socket unit having a plate portion with a downwardly opening slot confronting the slot in the bolt portion in the door closed position, and forming therewith said elongated slot, said knob being securable in the slot on said bolt portion and on said plate portion, and at an intermediate position bridging the bolt and plate portions.
Claim 10
Dependent Claim
63 words
A bolt assembly according to claim 1, and including a connecting sleeve fixed to said other end of the cable, and a latch pin fixed in the sleeve, said latch pin having a threaded portion extending through said elongated slot, and said knob being threaded on said threaded portion to clamp said bolt and plate portions selectively between said sleeve and the knob.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |