Patent US4496263A successfully refreshed from Google Patents.
Patent US3572068A successfully refreshed from Google Patents.
US3572068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch release system
Assignee: United Carr Inc
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Filing: 1968-09-12
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Granted: 1971-03-23
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Expires: 1988-09-12
Abstract
Abstract This is a latch release system which uses a manually actuated switch means electrically connected to a release mechanism including a heat motor and gear means. The heat motor and gear means have means of electrically opening the circuit instituted by the manual switch. The gear means turns a shaft which is connected at one end to a keylock and which is passed through a latch mechanism and is adapted to turn in one direction without turning the keylock.
Inventors
- 👤 Peter T Carlson
- 👤 Frederick J Weremey
- 👤 Edward B Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:51
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0001; E05B47/0009; Y; Y10; Y10S; Y10S292/00; Y10S292/62; Y10S292/66; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1082; Y10T70/00; Y10T70/50; Y10T70/5889; Y10T70/5903; Y10T70/5907; Y10T70/5973; Y10T70/5978; Y10T70/60; Y10T70/625; Y10T70/65
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A latch release system comprising a lock assembly, a latch assembly, a remote controlled release mechanism including a circuit-interrupting means and a transducer having a carrier piston, a switch means and a transmission shaft extending from the lock assembly through the latch assembly to the remote controlled release mechanism, the switch means electrically connected to the remote controlled release mechanism and the circuit-interrupting means comprising a drive means associated with the transmission shaft and having means associated therewith, the carrier piston having an extension in abutting relation to the means associated to the drive means and adapted to rotate away from the drive means on actuation of the transducer, the carrier piston and the means associated with the drive means being current carrying members and part of the circuit including the switch means.
Claim 2
Dependent Claim
133 words
A latch release system comprising a lock assembly, a latch assembly, a remote controlled release mechanism including a circuit-interrupting means and a transducer having a carrier piston, a switch means and a transmission shaft extending from the lock assembly through the latch assembly to the remote controlled release mechanism, the switch means electrically connected to the remote controlled release mechanism and the circuit-interrupting means comprising a drive means associated with the transmission shaft and having means associated therewith, the carrier piston having an extension in abutting relation to the means associated to the drive means and adapted to rotate away from the drive means on actuation of the transducer, the carrier piston and the means associated with the drive means being current carrying members and part of the circuit including the switch means.
Claim 3
Dependent Claim
78 words
A latch release system as set forth in claim 1 wherein the drive means comprises a drive gear meshed with an actuating gear and the means associated with the drive means is a rivet and the drive gear has a pin extending therefrom, the extension of the carrier piston having a forward edge in movable abutting relationship with the pin and in movable superposed abutting relationship with the pin and in movable superposed abutting relationship to the rivet.
Claim 4
Dependent Claim
77 words
A latch release system as set forth in claim 2 wherein an insulator member is spaced from the transducer and has an aperture formed therethrough and wherein a return spring circumscribes a portion of the carrier piston and is flexed against the piston arm and butts against the insulator member thereby functioning as a compression spring and a tension spring and wherein the terminal end of the carrier piston extends into tHe aperture formed in the insulator.
Claim 5
Dependent Claim
86 words
A latch release system as set forth in claim 3 wherein the circuit-interrupting means is fixed within a bracket and wherein the carrier piston has an integral cam portion extending downwardly therefrom adapted to movably engage a leaf spring and the leaf spring is adapted to engage a stop pin extending from the opposite side of the drive gear from the pin whereby the leaf spring will prevent movement of the drive gear in a predetermined direction when it is not fully engaged by the cam.
Claim 6
Dependent Claim
50 words
A latch release system as set forth in claim 4 wherein the edge of the aperture formed in the insulator member is adapted to engage a chamfer formed on the carrier piston whereby movement of the chamfer axially into the aperture and against the edge will rotate the carrier piston.
Claim 7
Dependent Claim
101 words
A latch release system as set forth in claim 5 wherein the transmission shaft is divided into a forward portion and a rear portion connected together by a freewheeling connection which comprises a cup portion associated with one of the shaft portions and a disc portion associated with the other shaft portion the cup portion having a slot formed on an edge thereof and the disc portion having a pin extending radially from an edge thereof and movably positioned in the slot of the cup portion whereby movement of the cup portion in one direction only will move the disc portion.
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |