Patent EP0248488A2 successfully refreshed from Google Patents.
EP0248488A2
Expired / Lapsed
EP
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Locks
Assignee: Chubb Lips Nederland BV
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Filing: 1987-06-01
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Granted: —
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Expires: 2007-06-01
Abstract
Abstract A key lock has provision for electromechanical release from a central station in the event of fire or other emergency. The dead bolt 9 is normally key-operated through a runner pin 14 working in a drive slot in the bolt tail. For remote release in an emergency a lever 22 is provided, loaded by a strong spring 24. This lever is normally held inoperative by a second, detent lever 25. The latter can be released by pulsing a solenoid 29, this in turn releasing the lever 22 to drive back the runner pin 14 and bolt 9 under the influence of its spring 24. Only a short pulse of electrical energy is required in order to trigger release of the lever 22 and the force for emergency withdrawal of the bolt comes from the spring 24 rather than electrically, so power-consumption is very low. The lever 22 can be reset after any such operation by a key-engageable member 38, the next time the bolt is thrown out again by the key.
Inventors
- 👤 Joannes Wilhelmus Van Erp
- 👤 Johan Cornelis Hordijk
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 22:00
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/06; E05B47/0607; E05B47/0001; E05B47/0002; E05B15/00; E05B15/10; E05B15/101; E05B47/0003; E05B47/0004
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
198 words
A lock comprising: a bolt (9) movable between locking and unlocking positions and means (14) for blocking movement of the bolt (9) from its locking to its unlocking position; a key-recognition mechanism (10) with means (11) whereby said blocking means (14) can be released and the bolt (9) moved between its locking and unlocking positions by turning a correct key; characterised by an emergency release member (22) separate from the bolt (9) and spring means (24) permanently biasing that member (22) to move in a sense in which it can release said blocking means (14) and move the bolt (9) from its locking to its unlocking position, independently of the key-recognition mechanism (10); a detent member (25) normally holding said emergency release member (22) in an inoperative position; an electromagnetic actuator (29) adapted, when energised, to release the detent member (25) to permit the emergency release member (22) to move in the aforesaid sense under the force of said spring means (24); and means (38) whereby subsequent turning of the correct key in the sense to move the bolt (9) to its locking position is effective to reset the emergency release member (22) to its said inoperative position.
Claim 2
Dependent Claim
198 words
A lock comprising: a bolt (9) movable between locking and unlocking positions and means (14) for blocking movement of the bolt (9) from its locking to its unlocking position; a key-recognition mechanism (10) with means (11) whereby said blocking means (14) can be released and the bolt (9) moved between its locking and unlocking positions by turning a correct key; characterised by an emergency release member (22) separate from the bolt (9) and spring means (24) permanently biasing that member (22) to move in a sense in which it can release said blocking means (14) and move the bolt (9) from its locking to its unlocking position, independently of the key-recognition mechanism (10); a detent member (25) normally holding said emergency release member (22) in an inoperative position; an electromagnetic actuator (29) adapted, when energised, to release the detent member (25) to permit the emergency release member (22) to move in the aforesaid sense under the force of said spring means (24); and means (38) whereby subsequent turning of the correct key in the sense to move the bolt (9) to its locking position is effective to reset the emergency release member (22) to its said inoperative position.
Claim 3
Dependent Claim
110 words
A lock according to claim 1 wherein, following release of the detent member (25), the emergency release member (22) is permitted a limited extent of free movement under the force of the spring means (24) before commencing its release of the blocking means (14) and movement of the bolt (9), whereby momentary energisation of the electromagnetic actuator (29) is sufficient to allow the emergency release member (22) to move to a position in which it cannot be reheld by the detent member (25) following de-energisation of the electromagnetic actuator (29) even if said commencement of the release of the blocking means (14) and movement of the bolt (9) is inhibited.
Claim 4
Dependent Claim
72 words
A lock according to claim 1 or claim 2 comprising a reset member (38) operable through the key-recognition mechanism (10) which is adapted to move the emergency release member (22) back to its inoperative position, beyond the position in which the emergency release member (22) can be set by the blocking means (14) when the latter is moved to the position in which it blocks the bolt (9) in its locking position.
Claim 5
Dependent Claim
53 words
A lock according to any preceding claim wherein the emergency release member (22) is in the form of a generally L-shaped lever, a shorter arm (32) of which is adapted to engage with the detent member (25) and a longer arm (35) of which is adapted to engage with the blocking means (14).
Claim 6
Dependent Claim
53 words
A lock according to any preceding claim wherein the detent member (25) is in the form of a generally L-shaped lever, a shorter arm (27) of which is adapted to engage with the electromagnetic actuator (29) and a longer arm (30) of which is adapted to engage with the emergency release member (22).
Claim 7
Dependent Claim
56 words
A lock according to any preceding claim wherein the key-recognition mechanism (10) cooperates with a runner (11) movable along an arcuate path and having an abutment (14) for engagement with drive surfaces (17, 20) on the bolt (9) for moving the latter between its locking and unlocking positions, said abutment (14) also constituting said blocking means.
References Cited (Backward Citations)
No citation records indexed.
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