Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Power converter with a variable reference voltage and inrush current limiting
Systems and methods for vehicle cruise control
Containers having radio frequency identification tags and method of applying radio frequency identification tags to containers
Frame timing synchronization in a geostationary satellite system
Methods and systems for presenting an inhalation experience
Use of natriuretic peptide for treating heart failure
Method of forming solderable side-surface terminals of quad no-lead frame (QFN) integrated circuit packages
  Randomly Featured Patents
Fuel injection pumping apparatus
Portable electronic device for photo management
Downloading of maps and location specific configuration information to GPS-capable mobile communication terminal
Method for connecting a chip to an antenna in a contactless smart card radio frequency identification device
Time skew correction in data time stamping
Contact terminal arrangement for electrical built-in switching unit
Apparatus and method for the determination of water by liquid chromatography
Conductive additives for use in printing processes employing radiational drying
Filter for the separating of solids particles from hot, gaseous or liquid media
Flat plug-in contact member for electrical plug-in connections