Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Door latch with lock










Image Number 2 for United States Patent #4524590.

The door latch with lock includes a support bracket adapted to be mounted on the interior surface of an outer screen or storm door, an elongated bolt slideably and rotatably carried in a guideway on the support bracket, and a transversely extending handle on the bolt which extends through a slot in the guideway and is somewhat longer than the spacing between the outer door and an inner door. When the handle is in a generally horizontal sliding position, the bolt slides freely between a latched position wherein the outer end is received in a keeper on the door frame and an unlatched position wherein the bolt is retracted from the keeper. The bolt and handle can be rotated downwardly to a general vertical locking position when the bolt is in either the latched or unlatched positions, but lock means and actuating means prevent the sliding of the bolt between the latched and unlatched positions unless the handle is rotated to the sliding position. The handle cannot be rotated to the sliding position for unlatching the bolt any time the inner door is closed. The actuation means responds to the lock means to move the bolt between the latched and unlatched position when the bolt and handle are in the locking position.








 
 
  Recently Added Patents
Method and apparatus for directing exhaust gas through a fuel-fired burner of an emission abatement assembly
Method and system for providing safe dynamic link redundancy in a data network
Outboard motor control apparatus
Duty cycle distortion correction
Composition and method for treating colds
Data writing method for flash memory and control circuit and storage system using the same
Method and system to reduce peak to average power ratio in multi-carrier modulation receivers
  Randomly Featured Patents
Lean burn engine speed control
Flea GABA receptor subunit nucleic acid molecules
Strap buckle with self-locking function
Connector and captive ball incorporating same
Fuel cut-off control system in fuel injection internal combustion engine with automatic power transmission
Apparatus for holding and forming a plurality of objects into a bundle
Heat dissipating module of memory
4-aza steroids
Biaxially textured articles formed by powder metallurgy
Process for energy beam perforation, especially electron beam perforation, of multi-layered artificial leather