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Mechanical/electronic lock and key therefor

  • US 6,374,653 B1
  • Filed: 12/14/1999
  • Issued: 04/23/2002
  • Est. Priority Date: 12/22/1997
  • Status: Expired due to Term
First Claim
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1. A cylinder collar for use with a lock cylinder having electronic access control means, such cylinder having components requiring power, said cylinder collar comprising:

  • (a) a collar body having a recessed hole capable of seating a head of the cylinder and when installed on an outer side of a door along with a cylinder, the collar body surrounding a portion of the cylinder, (b) at least one cavity in the collar body capable of storing a battery, and (c) battery contact means for providing connection between a battery in said cavity and the cylinder when the collar is installed on a lock with a cylinder.

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