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
Rupture resistant system
Method and system for placing an emergency call
Pixel structure of a solid-state image sensor employing a charge sorting method
Fuel cell with air channel actuator
Visual processing apparatus and visual processing method
Liquid crystal display device and driving method thereof
Encoding method, decoding method, encoding device, decoding device, program, and recording medium
  Randomly Featured Patents
Compact image pickup lens
Method and apparatus for the separate harvesting of back skin and back meat from a carcass part of slaughtered poultry
Liquid depth sensing system with liquid identification capability
Television facsimile transmission system
Method of producing magnetoresistance effect element
Voice data RF GPS integrated circuit
Nonlinear optical fibre method of its production and use thereof
Variable ignition distributor
Hedge trimmer
Automotive high intensity discharge ballast