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
Nanowire structured photodiode with a surrounding epitaxially grown P or N layer
Method for dynamic multi-level pricing for wireless communications according to quality of service
Method and device for peer arrangement in single substream upload P2P overlay networks
Method and apparatus for transmitting and receiving a signal in a communication system
Mobile device mode control based on dual mapping of availability (presence) information
Tap initialization of equalizer based on estimated channel impulse response
Moving picture decoding device and moving picture decoding method
  Randomly Featured Patents
Checker brick
Integrated circuit and method of operating such a circuit
2,2,6,6-Tetrasubstituted-4-piperidyl carboxy heterocyclic compounds as stabilizers for synthetic polymers
Power and area efficient interleaved ADC
Device for storing fenders on a boat
Cleaning swabs for fingernails
Animal deterrent device
Heat sensitive recording material, its manufacturing method and image forming process
Detachably connected container strips
Camera or similar article