Programmable key and improved lock assembly
First Claim
Patent Images
1. An improved key for use in a security system which utilizes a tumbler movable lock which is unlocked by the insertions of a key shank cut to correspond to the unlocked tumbler configuration and contains at least one electrical lock terminal for making electrical contact with said key and for supplying electrical power to said key, wherein the improved key comprises:
- a handle portion connected to said shank and sized for manual gripping of the key;
at least one electrical key terminal extending from said handle portion adjacent to and electrically isolated from said shank for making electrical contact with said electrical lock terminal;
means within said handle portion and connected to said at least one electrical key terminal for receiving said electrical power from said lock and providing a predetermined digital code signal to said electrical key terminal.
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Accused Products
Abstract
An improved key and lock assembly in which an electronically coded circuit is embedded in the handle of a conventional key and at least one electrical terminal extends from the handle adjacent to and electrically isolated from the key shank so as to contact a similarly located and biased terminal on the lock assembly when the key is fully inserted therein.
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Citations
8 Claims
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1. An improved key for use in a security system which utilizes a tumbler movable lock which is unlocked by the insertions of a key shank cut to correspond to the unlocked tumbler configuration and contains at least one electrical lock terminal for making electrical contact with said key and for supplying electrical power to said key, wherein the improved key comprises:
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a handle portion connected to said shank and sized for manual gripping of the key; at least one electrical key terminal extending from said handle portion adjacent to and electrically isolated from said shank for making electrical contact with said electrical lock terminal; means within said handle portion and connected to said at least one electrical key terminal for receiving said electrical power from said lock and providing a predetermined digital code signal to said electrical key terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification