VEHICLE SEATS

• US 3,632,167 A
• Filed: 01/21/1970
• Issued: 01/04/1972
• Est. Priority Date: 01/21/1970
• Status: Expired due to Term

• Current Assignee: Bostrom Seating Corporation
• Original Assignee: Donald Sinfield
• Inventors: Sinfield, Donald
• Primary Examiner(s): Zugel, Francis K.
• Application Number:
  US05/004,634
• Time in Patent Office: 713 Days
• Field of Search: 297/313,320,321,307,309,301,302 248/423,419,396,394,399,373,376,386
• US Class Current: 297/307
• CPC Class Codes: B60N 2/504 attached to the base and the backrest
• CPC Class Codes: B60N 2/505 Adjustable suspension including height adjustment
• CPC Class Codes: B60N 2/506 Seat guided by rods
• CPC Class Codes: B60N 2/509 Seat guided by slides or the like
• CPC Class Codes: B60N 2/544 Compression or tension springs B60N2/542 takes precedence

Abstract

A seat for vehicles in which both a seat part and a back part are resiliently mounted in a frame to damp the transmission of vibration from the vehicle to the occupant of the seat. The seat part moves both vertically and pivotally about a horizontal axis.

Claims

1. A seat for a vehicle, said seat comprising a seat part supported in a first frame, and a back part resiliently supported in a second frame connected to and supported by said first frame, the said seat part being supported at its rear portion by said back part and at its front portion by a pair of rearwardly extending arms mounted at their forward ends to said first frame and at their rearward ends to said seat part at points spaced from the front edge of said seat part, said arms being rigidly joined to each other at their rearward ends by an elongated bar whereby downward pressure applied to one arm will be transmitted to the other, and resilient means urging the front edge of said seat part upwardly relative to said frame.

2. A seat according to claim 1 wherein said second frame is pivotally connected to said first frame.

3. A seat according to claim 1 wherein said arms are pivotally mounted to said first frame by means of a sleeve member which surrounds a tubular member extending between the sides of the first frame.

4. A seat according to claim 3 wherein said resilient means comprise compression spring means interposed between the bottom of said seat part and said tubular member, the movement of said tubular member relative to said seat part by said resilient means being limited by a plurality of elongated members affixed to the underside of said seat part, said elongated members having U-shaped end portions disposed around said tubular members.

5. A seat according to claim 1 wherein said elongated bar is a torsion bar operable to stabilize movement of the seat part about the longitudinal axis of the seat.

6. A seat according to claim 1 and further including an additional frame extending along the sides of said first frame, said first frame being supported by said additional frame and vertically adjustably positioned relative thereto by means of independently operable front and rear crossbars which are lockingly engageable with vertical slots in said additional frame.