Resources Contact Us Home
Automatic sliding door closure device

Image Number 11 for United States Patent #7124469.

An automatic sliding door closure device for use with a sliding door on a track. The device comprises a housing attached to the door having a connecting arm attached to the housing. A pulley rotatably mounted within the housing guides a cable having an exterior end attached to the doorframe and an interior end connected to the gear, rotating the gear when the sliding door is slid along the track. A spring engaged with the gear tensions rotation of the gear as the door is moved. An airtight cylinder parallel with the track has a plunger arm connected to the connecting arm that is drawn within the cylinder as the door is moved. A flexible member connected to the plunger arm creates an air cushion within the cylinder. An airflow control valve controls intake and outlet of air into the airtight cylinder controlling the closure speed of the door.

  Recently Added Patents
Aluminum oxide coated cutting tool and method of manufacturing thereof
Pluggable power cell for an inverter
Enabling improvement in cellular network coverage
Regulating a supply voltage provided to a load circuit
Semiconductor device
Liquid crystal display apparatus
Segmenting video based on timestamps in comments
  Randomly Featured Patents
Image forming apparatus including a transfer medium bearing member having a sheet member for bearing a transfer medium thereon
Oligonucleotide labeling reagents
Edge etched silicon wafers
Fixing device and image forming apparatus
Substituted heterocyclic compounds and methods of use
Composite printhead fire signals
Front radiator grille for an automobile
Method for producing aldehyde acids by selective ozonization of cyclo-olefins
Method of using an intravaginal device with fluid transport plates
Insecticidal combinations