Resources Contact Us Home
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
Battery power management system and method
Method and system for dynamically representing distributed information
Method for treating hyperglycemia
Cable sheath
Method for assembling a camera module, and camera module
Transferring storage devices within storage device testing systems
Providing a web page to a client
  Randomly Featured Patents
Bubbling up task severity indicators within a hierarchical tree control
Method for notification and control of incoming calls in a network
Card dispenser apparatus and protective guard therefor
Granular reduction in power consumption
Popcorn bucket lid
Integral latching arm
Boiler tube pulling method and apparatus
Air conditioner
Touch-panel input device
Efficient cross-stream printing system