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
Nanoparticles in a flash memory using chaperonin proteins
Image forming apparatus
Image forming apparatus
(Meth)acrylic resin composition, imidized (meth)acrylic resin composition, and film obtained by molding them
System, method, and computer readable medium for a force-based wheelchair joystick
Method of sheet alignment and method of post-processing comprising the same and method of image formation
Cavernous nerve stimulation via unidirectional propagation of action potentials
  Randomly Featured Patents
Battery residual amount display circuit
Controlling a tape processing apparatus for embossing on a tape to be processed a recognizable braille and for printing ink characters
Hand-held instrument for measuring reflections on colored control fields of printed sheets
Security printing and unlocking mechanism for high security printers
Multi-axial explosive, laterally-shearing, reactive mechanism
Method and apparatus for interleaving bitstream to record thereof on a recording medium, and reproducing the interleaved bitstream therefrom
Method for controlling a lighting device
Irrigation set adaptor and control panel for electro-coagulation
Helical splined rotary actuator