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
Polyfunctional sulfur-containing epoxies and compositions thereof
Synergistic compositions for the treatment of topical viral infections
Insulated container sleeve
Enediyne compounds, conjugates thereof, and uses and methods therefor
Liposomal nanoparticles and other formulations of fenretinide for use in therapy and drug delivery
Profiling activity through video surveillance
Post-processing device and image forming system
  Randomly Featured Patents
Battery management system and driving method thereof
Cartridge with fuel supply and membrane electrode assembly stack
Process for fabricating patterned, functionalized particles and article formed from particles
Composite semiconductor device
System for packaging native program extensions together with virtual machine applications
Method for improving threshold voltage stability of a MOS device
Method of making laminated multi-layered film enclosures
Smoke-modifying agents and smoking material rods comprising smoke-modifying agents
Drawer organizer
Beam type transducers employing accurate, integral force limiting