×

Clockwork driven hypodermic syringe

  • US 4,059,110 A
  • Filed: 10/07/1976
  • Issued: 11/22/1977
  • Est. Priority Date: 10/07/1976
  • Status: Expired due to Term
First Claim
Patent Images

1. A clockwork device adapted for driving a syringe, wherein said syringe includes an elongated container for fluid and a plunger extending outwardly from the container and slideable therein, said clockwork device comprising:

  • a housing,a clockwork mechanism having an escapement controlled gear train mounted within the housing adjacent to the plunger in an extended condition,a syringe driving mechanism adapted to be coupled to said clockwork mechanism and including a winding shaft with a mainspring mounted thereto and a pinion thereon engaging a rack adapted to drive the syringe plunger, andmeans coupling the clockwork mechanism to the syringe driving mechanism to drive the plunger at a predetermined rate controlled by the clockwork mechanism comprising a spring clutch mounted about the winding shaft to permit free rotation in one direction while restraining mainspring torque in the opposite direction.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×