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
Digital photographing apparatus and control method for evaluating validity of an auto-focus operation
Fan guide
Routing of data including multimedia between electronic devices
Electronic device and control method therein
Telephone relaying apparatus, telephone relaying method, and program
Position pointer, variable capacitor and inputting apparatus
Systems and methods for managing and utilizing excess corn residue
  Randomly Featured Patents
Drilling/milling guide and keel cut preparation system
Optical switching device
Skew compensation for a multi-agent shared bus
Tree position adaptive soft output M-algorithm receiver structures
Herbicidal composition comprising a fluoropropylthiazoline sulfonylurea derivative and another herbicide
Bonding of halogenated organic compounds
Method and rake receiver for phasor estimation in communication systems
Circuit and method for sensing memory cell having multiple threshold voltages
Engine arrangement
Abrasive composition and process for polishing