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US 5,737,947 AGranted
Mother-and-daughter combination lock
OwnerChong-Kuan Linginventor
Life of this patent
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Abstract
A mother-and-daughter combination lock includes: a housing, a shackle lockable or unlockable in a first portion of the housing as controlled by a locking shaft and a plurality of dials and sleeves rotatably mounted in the housing; and a sliding door slidably held in the housing for covering and uncovering a security compartment recessed in a second portion of the housing as also controlled by the locking shaft, the dials and the sleeves, whereby either the shackle or the sliding door can be independently and individually locked or unlocked.
Claims8
A mother-and-daughter combination lock comprising:
- a housing having a shackle movably securable in and releasable from a first portion of said housing;
- a security compartment for storing small items therein formed in a second portion of said housing;
- a sliding door means formed in said second portion of said housing, operatively lockable for closing said security compartment and unlockable for opening said security compartment;
- a plurality of dials and sleeves rotatably mounted in said housing about a locking shaft longitudinally disposed in said sleeves, each said sleeve resiliently coupled with each said dial, whereby upon rotation of said dials to a first combination, said locking shaft is locked by said sleeves to lock said shackle;
- and
- an actuating plate resiliently contacted with and operatively biased by said sleeves, whereby upon a rotation of said dials to the first combination for locking said shackle, said actuating plate is biased to a first position to unlock the sliding door means;
- and upon a rotation of said dials to a second combination, said sleeves are rotated to bias said actuating plate to a second position to lock the sliding door means, and to unlock said locking shaft for unlocking said shackle.
4 more elements
Dependencies are inferred from the claim text.