×

Adjustable seats and components therefor "A" version

  • US 4,747,571 A
  • Filed: 02/04/1986
  • Issued: 05/31/1988
  • Est. Priority Date: 02/04/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. A seat adjustment assembly for adjusting the inclination and vertical position of a seat cushion of a seat above the base of the seat, the seat assembly comprising:

  • (a) a base;

    (b) a seat cushion supported in spaced relation above the base;

    (c) a support for carrying the cushion in spaced relation above the base and being secured thereto, the support carrying;

    (i) a cam assembly disposed proximate the centre thereof and carrying opposed peripheral circular (convex) portions, each opposed peripheral circular portion rotatable about the centre of such circular portion and another portion adjacent each circular portion, the outer surfaces of which other portions being closer to one another than the circular portions are close to one another;

    (ii) means to permit the rotation of at least one circular cam portion at a time;

    (iii) a pair of pawls on either side of the cam assembly each pawl being secured for pivotal movement and having its end closest the cam assembly carrying a circular recess corresponding in shape to the circular cam portion for normally being engaged therewithwhereby rotation of at least one of the circular portions about its centre permits the end of the pawl carrying the recess to follow the outer surface of the cam assembly from the circular portion to the portion adjacent each circular portion, thereby releasing the associated pawl permitting the seat to be adjusted and means are provided to cause the pawls to follow the outer surface configuration of the cam assembly and means to return the cam assembly and pawls to their normal position.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×