Door latch mechanism
AssigneeUniversal Industrial Products, Inc.
InventorNEIL L. MARKO
Life of this patent
Estimating the term…
Abstract
The door latch mechanism independently operated by first and second handles of the door handle assembly comprising a cam member having a cam surface which facilitates translation of movement of the handles to displacement of the cam member. The cam member can be coupled to a latch member and move the latch member between an extended and retracted position. A door lock mechanism can prevent displacement of the second door handle while simultaneously allowing displacement of the first door handle.
Claims13
A door latch mechanism operably coupled to a door for selectively securing the door relative to a door frame, the door latch mechanism comprising:
- a latch assembly having a latch member positionable between an extended position engaging the door frame and a retracted position being spaced apart from the door frame;
- a first rack component being movable in at least a first direction, said first rack component having a first slot;
- a second rack component being movable in at least said first direction, said second rack component having a second slot;
- a cam member having a cam surface, said cam member being movable in a second direction, said second direction being generally perpendicular to said first direction, said cam member being operably coupled to said latch member for selective movement therewith;
- an intermediate component having an outer surface engagable with said cam surface, said intermediate component being slidably received within said first slot and said second slot such that linear actuation of at least one of said first rack component and said second rack component causes said intermediate component to cam along said cam surface thereby linearly moving said latch member from said extended position to said retracted position;
- and
- a lock pawl being positionable in a lock position and an unlock position, said lock pawl inhibiting movement of said first rack component in said lock position and permitting movement of said first rack component in said unlock position.
A door latch mechanism operably coupled to a door for selectively securing the door relative to a door frame, the door latch mechanism comprising:
- a latch assembly having a latch member positionable between an extended position engaging the door frame and a retracted position being spaced apart from the door frame;
- a first rack component being linearly movable in at least a first direction, said first rack component having a first slot;
- a second rack component being linearly movable in at least said first direction, said second rack component having a second slot;
- a cam member having a cam surface, said cam member being linearly movable in a second direction, said second direction being generally perpendicular to said first direction, said cam member being operably coupled to said latch member for selective movement therewith;
- and
- an intermediate component engaging said cam surface, said intermediate component being slidably received within said first slot and said second slot such that linear actuation of at least one of said first rack component and said second rack component causes said intermediate component to cam along said cam surface thereby linearly moving said latch member from said extended position to said retracted position.
Dependencies are inferred from the claim text.