Adjustable seat assembly for vehicle

A seat assembly (10) for mounting on a vehicle comprising:

• a support frame (16) having a fore end an after end;
• a seat (12) having front and rear ends and lateral sides and movable pivotally relative to said support frame;
• a backrest (14) having upper and lower ends and movable vertically relative to said support frame;
• maeans (56, 62, 60) for pivotally connecting said seat (12) near the front end thereof to said support frame (15) near the fore end thereof to enable said seat (12) to pivot upwardly and downwardly relative to said support frame (16);
• means (68, 92, 90) for slidably connecting said backrest (14) intermediately of the upper and lower ends thereof to said support frame (16) near the aft end thereof to enable said backrest (14) to be moved upwardly and downwardly relative to said support frame (16);
• means (68, 70, 76) for pivotally connecting said seat (12) near the rear end thereof to said backrest (14) near the lower end thereof so that pivotal movement of said seat (12) effects vertical movement of said backrest (14);
• suspension means (41) for resiliently supporting said seat (12) and said backrest (14) to control downward pivotal seat movement and downward vertical backrest movement which occurs in response to the weight of a seat occupant and to road shock, said suspension means (41) comprising:
• a cable (132), means including deflectable suspension spring means (136) connecting said cable (132) to the aft end of said support frame (16), and cable anchoring means (126) mounted on said seat (12) near the front end thereof, said cable (132) being connected to said cable anchoring means (126) and supportingly engaging said seat (12) and said backrest (14).

A seat assembly (10) for mounting on a vehicle comprising:

• a support frame (16) having a fore end and an aft end;
• a seat (12) having front and rear ends and lateral sides and movable fore and aft and pivotally relative to said support frame;
• a backrest (14) having upper and lower ends and movable vertically and pivotally relative to said support frame;
• means (56, 62, 60) for pivotally and slidably connecting said seat (12) near the front end therof to said support frame (16) near the fore end thereof to enable said seat (12) to be moved fore and aft and to pivot upwardly and downwardly relative to said support frame (16);
• means (68, 92, 90) for pivotally and slidably connecting said backrest (14) intermediately of the upper and lower ends thereof to said support frame (16) near the aft end thereof to enable said backrest (14) to be moved upwardly and downwardly and to tilt fore and aft relative to said support frame (16);
• means (68, 70, 76) for pivotally connecting said seat (12) near the rear end thereof to said backrest (14) near the lower end thereof so that fore and aft movement of said seat (12) effected by an occupant of said seat (12) effects tilting movement of said backrest (14);
• resilient suspension means (41) connected between said support frame (16) and said seat (12) and said backrest (14) for resiliently supporting said seat (12) and said backrest (14) to control downward pivotal seat movement and downward vertical backrest movement which occurs in response to the weight of a seat occupant and to road shock;
• and
• latching means (13) operable by said occupant for releasably latching said seat (12) to prevent fore and aft movement of said seat (12) and to prevent tilting movement of said backrest (14), said latching means (13) comprising:
• first tilt latch means including pin means (108) mounted on said support frame (16), a manually movable tilt adjustment member (28) mounted at the front end of said seat (12), second tilt latch means (102) including at least one slot (106) movably mounted on said support frame (16) and connected to said tilt adjustment member (28), said tilt adjustment member (28) being manually movable by said occupant between latched and unlatched positions wherein it effects corresponding movement of said second tilt latch means (102) so that said slot (106) moves into and out of latched engagement, respectively, with said pin means (108) of said first tilt latch means, and biasing means (110) connected between said tilt adjustment member (28) and said seat (12) to bias said tilt adjustment member (28) and said second tilt latch means (102) in latched position.