Anti-vandal door lock apparatus
AssigneeTriangle Brass Manufacturing Company, Inc.
InventorsIra J. Simon, Martin S. Simon
Life of this patent
Estimating the term…
Abstract
An anti-vandal door lock apparatus in which a cylinder lock such as a mortise lock cylinder is employed for unlatching a cylindrical lock assembly. In a preferred embodiment, the mortise lock cylinder is mounted to the outside of a door trim such as a pull plate, with the cylindrical lock mounted to the inside of the trim, and the pull plate is mounted to the door, in such manner as to effect an anti-vandal door lock assembly. Preferred embodiments may include a hold-back feature, as well as a feature for facilitating secured removal of the mortise lock cylinder as for re-keying.
Claims20
A door lock apparatus, comprising the combination of:
- a door;
- a trim plate securable to the outside of said door;
- a cylindrical lock apparatus including a latchbolt, a lock body having a retractor for said latchbolt, a spindle inwardly extending from said lock body and coupled to said retractor for unlatching said latchbolt upon rotation of said spindle, and a handle securable to said spindle for rotating said spindle;
- a cylinder lock including a housing and a cylinder actuable for rotation in said housing, and a cam secured to said cylinder and rotatable therewith;
- said lock body with said spindle extending therefrom secured to said trim plate independently of said door and inwardly of said trim plate;
- and
- said housing of said cylinder lock secured to said trim plate independently of said door and outwardly extending from said lock body, and with said cam coupled to said retractor for unlatching said latchbolt upon rotation of said cylinder.
A door lock apparatus, comprising the combination of:
- a door;
- a door trim securable to a face of said door;
- a cylindrical lock apparatus including a latchbolt, a lock body having a retractor for said latchbolt, a spindle extending from a first side of said lock body and coupled to said retractor for unlatching said latchbolt upon rotation of said spindle, and a handle securable to said spindle for rotating said spindle;
- a cylinder lock including a housing and a cylinder actuable for rotation in said housing, said cylinder lock extending from a second side of said lock body opposite said first side;
- a cam secured to said cylinder and rotatable therewith, said cam coupled to said retractor for unlatching said latchbolt upon rotation of said cylinder;
- and
- said cylinder lock secured to said door trim independently of said door with said cylinder rotatably actuable from one side of said door trim, and said lock body secured to said door trim independently of said door with said spindle rotatable from another side of said door trim opposite said one side.
Dependencies are inferred from the claim text.