Back to results
US 8,656,747 B2Granted
Keying system and method
AssigneeKwikset Corporation
InventorsSteven Armstrong, Gerald B. Chong
Life of this patent
Estimating the term…
Abstract
A kit for a master keying system includes a plurality of replacement master racks. A rack removal key is provided for insertion into a keyway. The rack removal key has a first cut defining a first lift amount. A rack removal tool is provided for insertion into the keyway. The rack removal tool has a second cut defining a second lift amount, wherein the second lift amount is greater than the first lift amount.
Claims6
A kit for a master keying system, comprising:
- a plurality of replacement master racks;
- a rack removal key for insertion into a keyway, the rack removal key having a first cut defining a first lift amount;
- a rack removal tool for insertion into the keyway, the rack removal tool having a second cut defining a second lift amount, the second lift amount being greater than the first lift amount and
- wherein a lock cylinder to be keyed has a rack carrier configured to selectively carry one of a first plurality of racks and the plurality of replacement master racks, the kit further comprising a rack carrier moving tool configured to move the rack carrier in a longitudinal direction.
1 more element
A kit for a master keying system, comprising:
- a plurality of replacement master racks;
- a rack removal key for insertion into a keyway, the rack removal key having a first cut defining a first lift amount;
- a rack removal tool for insertion into the keyway, the rack removal tool having a second cut defining a second lift amount, the second lift amount being greater than the first lift amount;
- wherein a lock cylinder to be keyed has a rack carrier configured to selectively carry one of a first plurality of racks and the plurality of replacement master racks, the kit further comprising a rack carrier moving tool configured to move the rack carrier in a longitudinal direction;
- and
- wherein each rack of the plurality of replacement master racks has a first locking bar-receiving groove along a neutral axis and at least a second locking bar-receiving groove spaced from the neutral axis.
3 more elements
A kit for a master keying system, comprising:
- a plurality of replacement master racks;
- a rack removal key for insertion into a keyway, the rack removal key having a first cut defining a first lift amount;
- a rack removal tool for insertion into the keyway, the rack removal tool having a second cut defining a second lift amount, the second lift amount being greater than the first lift amount;
- a master key;
- and
- wherein a lock cylinder to be keyed has a rack carrier configured to selectively carry one of a first plurality of racks and the plurality of replacement master racks, the kit further comprising a rack carrier moving tool configured to move the rack carrier in a longitudinal direction.
3 more elements
Dependencies are inferred from the claim text.