Electronic locks for doors
AssigneeYale Security Products Limited
InventorsIvan Chew, John Verhaeg
Life of this patent
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Abstract
An electronic lock for a door includes a built-in generator (20) for generating electrical energy for operating an electronic code recognition circuit and energizing a lock-release solenoid when appropriate. The generator (20) is linked to the door handle spindle (31) via a resilient mechanical energy storage device (24) which is "wound up" during the initial part of turning of the handle and tripped at a predetermined point to release stored energy into the generator (20).
Claims13
An electronic lock for a door comprising the combination of an operating member for displacing a locking element, an electronic circuit controlling the operation of the lock, said circuit being in a lock-operating condition only upon being electrically energised and upon receiving predetermined information supplied thereto by an authorized lock user, and electrical generator means mechanically connected to the operating member so as to generate electrical power for the lock and its electronic circuit when the operating member is moved, the generator means comprising resilient means drivingly connected to the operating member so as to store mechanical energy during initial movement of the operating member, release means operable by the operating member to release said resilient means and connecting means connecting the resilient means to an electrical generator so that said resilient means, when released, drives the generator.
Dependencies are inferred from the claim text.