Lock device
AssigneeThase Enterprise Co., Ltd.
InventorChing Tien Lin
Life of this patent
Estimating the term…
Abstract
A lock device includes an actuating lever pivotally engaged in a lock housing for actuating a deadbolt of a latch device, two rotary mechanisms pivotally engaged in the housing and each having a rotary member pivotally engaged in a casing for coupling to an outdoor handle and an indoor handle, and the rotary member of one of the rotary mechanisms is secured to the casing for allowing the rotary member and the casing of the rotary mechanism to be rotated relative to the lock housing with the indoor handle only, and for preventing the outdoor handle from being brutally rotated by the unauthorized persons and for preventing the lock device from being destroyed or damaged by the unauthorized persons.
Claims9
A lock device comprising:
- a lock housing including a chamber formed therein,
- a latch device slidably received and engaged in said chamber of said lock housing and having a deadbolt extendible out of said lock housing,
- an actuating lever pivotally received and engaged in said chamber of said lock housing for engaging with said latch device and for selectively actuating said deadbolt of said latch device into said chamber of said lock housing,
- two rotary mechanisms pivotally received and engaged in said chamber of said lock housing and each including a casing and a cover secured together, and each including a compartment and a channel formed in said casing, and each including a rotary member pivotally received and engaged in said compartment of said casing, and each including a protrusion extended from said rotary member and slidably engaged with said channel of said casing for limiting said rotary member to rotate relative to said casings of said rotary mechanisms respectively, and each including a cavity formed in said rotary member, and each including an actuating finger extended outwardly from said casing for selectively engaging with said actuating lever, and each including a tongue slidably attached to said casing and each having an inner end extendible into said compartment of said casing for selectively engaging with said cavity of said rotary member and for selectively securing said rotary member and said casing together and for allowing said rotary member and said cover and said casing of each rotary mechanism to be rotated in concert with each other,
- an outdoor handle and an indoor handle coupled to said rotary members of said rotary mechanisms respectively for selectively rotating said rotary members of said rotary mechanisms relative to said lock housing respectively,
- two spring-biased followers received and engaged in said chamber of said lock housing and each including a limb for engaging with said protrusion of said rotary member and for allowing said rotary members to be selectively rotated relative to said lock housing with said spring-biased followers, and
- a fastener securing said tongue and said rotary member to said casing of a first of said rotary mechanisms for allowing said rotary member and said cover and said casing of said first rotary mechanism to be rotated relative to said lock housing with said indoor handle.
Dependencies are inferred from the claim text.