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Deceleration-responsive passenger-restraining device for motor vehicles

  • US 4,023,643 A
  • Filed: 10/30/1972
  • Issued: 05/17/1977
  • Est. Priority Date: 10/30/1972
  • Status: Expired due to Term
First Claim
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1. A deceleration-responsive passenger-restraining device for installation in a motor vehicle having a passenger compartment with a steering wheel and a passenger seat therein, said device comprisingreciprocatory fluid pressure motor means adapted to be mounted on said motor vehicle and including cylinder means and piston means therein reciprocable relatively thereto and adapted to extend into the passenger compartment,buffer means adapted to be disposed in the passenger compartment and operatively connected to said piston means for motion thereby from a retracted position remote from the seat to a passenger-restraining position adjacent the seat,substantially instantaneously-burning explosive gas generating means having solid propellant cartridge receiving means adapted to receive such solid propellant cartridges and communicating with said cylinder means,cartridge-firing means responsive to the attainment of a predetermined deceleration of the vehicle for firing the cartridge and thereby injecting exploded gases into said cylinder means for moving said piston means and consequently propelling said buffer means from its retracted position to its passenger restraining position,said buffer means including a plate structure having a substantially rigid approximately vertical intermediate plate portion and also having a substantially rigid lower plate portion disposed angularly relatively to said intermediate portion and extending therebelow toward said cylinder means,and braking means including a braking member movable into and out of braking engagement with said piston means,said braking means being disposed adjacent said piston means and responsive to the travel of said buffer means a predetermined distance toward said passenger-restraining position for moving said braking member into braking engagement with said piston means and halting said piston means.

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