Push button lock
AssigneeNagasawa Manufacturing Co., Ltd.
InventorsAkemaru Watanabe, Kenji Naito
Life of this patent
Estimating the term…
Abstract
To provide a push button lock which includes a housing on which a plurality of depressible push buttons are located, a lock pin which moves axially with the push button and being engageable with and disengageable from the push button, a lock plate formed with a plate key hole and plate lock hole, a reset plate which is provided parallel to the lock plate, a driving cam linked to a deadbolt lock, and the security-code controller detachably attached to the housing. A mechanism and components for setting and storing a security code for locking and unlocking are assembled in a cartridge. The cartridge is detachably attached to the inside of the housing so that various surface designs are available.
Claims35
A push button lock comprising:
- a housing on which a plurality of depressible push buttons are located;
- a lock pin engageable with and disengageable from the push buttons and movable coaxially with the push buttons;
- a lock plate formed with a plate key hole into which the lock pin is insertable and a plate lock hole that contacts the lock pin;
- a reset plate arranged in parallel with the lock plate and provided inside with a reset spring, thereby enabling axial displacement of the lock pin inserted via the reset spring to be maintained and released;
- a driving cam rotatably and engageably provided in a movement area of the lock plate and linked to a deadbolt lock, whereby controlling a movement of the lock plate via the lock pin upon pressing of the push buttons, makes the lock plate and the driving cam disengageable;
- and
- a security-code controller which receives the reset plate and the lock plate slidably and in parallel to each other and which is detachably attached to the housing.
(canceled)
Dependencies are inferred from the claim text.