초록 ▼

A seat suspension for resiliently attaching a seat assembly to a support frame on a vehicle so as to cushion the ride for the seat occupant comprises: main biasing springs operatively connected between the seat assembly and support frame to initially absorb energy and limit descent as the seat assem

A seat suspension for resiliently attaching a seat assembly to a support frame on a vehicle so as to cushion the ride for the seat occupant comprises: main biasing springs operatively connected between the seat assembly and support frame to initially absorb energy and limit descent as the seat assembly is forced downward; auxiliary biasing springs, including a “hard”spring and a “soft”spring, to subsequently absorb energy and further limit descent after the main springs have been compressed a predetermined amount; and a shock absorber connected between the seat assembly and support frame to dampen vertical motion. A preloading apparatus is provided for adjusting or preloading the main biasing springs to take into account the weight of the seat occupant. A height adjusting apparatus is provided to adjust the height of the seat assembly and associated biasing springs relative to the support frame. A positioning apparatus is provided to enable the support frame to be shifted fore and aft relative to the vehicle.

대표청구항 ▼

Seat suspension means for attaching a seat assembly to a support frame on a vehicle comprising: an upper spring support member attached to said seat assembly, said upper spring support member and said seat assembly being mounted for vertical movement relative to said support frame between upper and

Seat suspension means for attaching a seat assembly to a support frame on a vehicle comprising: an upper spring support member attached to said seat assembly, said upper spring support member and said seat assembly being mounted for vertical movement relative to said support frame between upper and lower positions; a lower spring support member mounted on said support frame; a main biasing spring mounted between said members and adapted to be loaded by the seat assembly as the latter descends from its upper position; auxiliary biasing springs mounted between said members, said auxiliary biasing springs including one spring which is deflected at a faster rate than another spring, said auxiliary biasing springs adapted to commence being loaded by said seat assembly when the latter has descended a predetermined distance from its upper position and has already loaded said main biasing spring by a predetermined amount, said auxiliary biasing springs being further adapted so that said one spring becomes fully loaded before said another spring becomes fully loaded and before said main biasing spring becomes fully loaded; and shock absorber means connected between said upper spring support member and said support frame. In combination: a seat assembly; a support member for mounting on a vehicle; a support frame mounted on said support member; seat suspension means for resiliently attaching said seat assembly to said support frame so as to cushion the ride for the seat occupant, said seat suspension means comprising: a main biasing spring operatively connected between said seat assembly and said support frame to absorb energy and limit descent as said seat assembly is forced downward; and a shock absorber connected between said seat assembly and said support frame to dampen vertical motion; preloading apparatus for preloading said main biasing spring to take into account the weight of the seat occupant; height adjusting apparatus to adjust the height of said seat assembly and its associated support frame relative to said support member to thereby adjust the height of said seat assembly relative to said vehicle; said height adjusting apparatus including: an adjusting lever, means for pivotally mounting said lever at one end to said support member and near one side of the latter, said lever extending across said support member and having a handle at the other end thereof, a slot in said lever, a slot in said support member, a pin fixed to and extending from said support frame and extending through both slots, detent and hole means between said lever and support member, whereby swinging said lever about said means for pivotally mounting vertically adjusts said support frame and whereby said detent and hole means cooperatively engage to hold said support frame and said seat assembly in a vertically adjusted position relative to said support member; and positioning apparatus to enable said support member to be shifted fore and aft relative to said vehicle.