Seat structure for vehicles

Claim 2

A seat bottom struture for a vehicle comprising: a pair of spaced apart fixed lower rails; a pair of sliding rails each having a forward end and a rear end and slidably mounted on said lower rails; two spaced apart elongated arms, each having a forward end and rear end and connected proximate their forward ends to the forward end of a corresponding one of said pair of sliding rails; at least two connecting members extending substantially perpendicular to and connecting said arms, one of said connecting members disposed proximate said forward ends of said arms, and the other connecting member disposed proximate said rear ends of said arms; a connecting rod extending between and connecting the rear ends of said sliding rail; and means including said connecting rod for pivotally attaching said rod to said rear most connecting member for varying the distance between the rear most connecting member and the sliding rails.

Claim 3

A seat bottom structure as set forth in claim 1, wherein said means for pivotally attaching said rod to said rear most connecting member includes: a seat vertical control rod having first worm gear proximate to one end and extending perpendicular to and between said arms; a link rod disposed perpendicular to said vertical control rod having a second worm gear disposed at one end in operable engagement with said first worm gear and having a connecting portion at the end opposite the one end; and a V-shaped crank lever pivotably attached at one end to the connecting portion of said link rod, at the other end to said connecting rod, and at the apex thereof to said rear most connecting member.

Claim 4

A seat bottom structure as set forth in claim 2, wherein the V-shaped crank lever is also pivotably attached at the apex to at least one of said arms.

Claim 5

A seat bottom structure as set forth in claim 1 further comprising seat cover material and an elongated plate having a forward portion extending between and connecting the forward ends of said arms for securing the edges of seat cover material.

Claim 6

A seat bottom structure as set forth in claim 4, wherein the forward portion of the plate is U-shaped.

Claim 7

A seat bottom structure as set forth in claim 4, wherein the plate has rear portions extending substantially along the length of said arms.

Claim 8

A seat bottom structure as set forth in claim 1 including a seat cushion spring assembly having a plurality of U-shaped end portions, and wherein said connecting members further include a plurality of spaced-apart rib portions having openings slidably retaining said end portions.

Claim 9

A seat bottom structure as set forth in claim 7, wherein said U-shaped end portions are disposed with the openings of the U-shaped end portions facing in substantially the same direction.

Claim 10

A seat bottom structure for a vehicle comprising: a pair of spaced apart fixed lower rails; a pair of sliding rails each having a forward end and a rear end and slidably mounted on said lower rails; two spaced apart elongated arms, each having a forward end and rear end and connected proximate their forward ends to the forward end of a corresponding one of said pair of sliding rails; at least two connecting members extending substantially perpendicular to and connecting said arms, one of said connecting members disposed proximate said forward ends of said arms, and the other connecting members disposed proximate said rear ends of said arms, said connecting member having a plurality of spaced apart rib portions having openings; a connecting rod extending between and connecting the rear ends of said sliding rail; and means including said connecting rod for pivotally attaching said rod to said rear most connecting member for varying the distance between the rear most connecting member and the sliding rails; and a seat cushion spring assembly having a plurality of U-shaped end portions slidably retained in said openings of said spaced apart rib portions.

Claim 11

A seat bottom structure for a vehicle comprising: a pair of spaced apart fixed lower rails; a pair of sliding rails each having a forward end and a rear end and slidably mounted on said lower rails; two spaced apart elongated arms, each having a forward end and rear end and connected proximate their forward ends to the forward end of a corresponding one of said pair of sliding rails; at least two connecting members extending substantially perpendicular to and connecting said arms, one of said connecting members disposed proximate said forward ends of said arms, and the other connecting members disposed proximate said rear ends of said arms, said connecting member having a plurality of spaced apart rib portions having openings; a connecting rod extending between and connecting the rear ends of said sliding rail; and means including said connecting rod for pivotally attaching said rod to said rear most connecting member for varying the distance between the rear most connecting member and the sliding rails; and a seat cushion spring assembly having a plurality of U-shaped end portions slidably retained in said openings of said spaced apart rib portions.

Claim 12

A seat bottom structure as set forth in claim 9, wherein said means for pivotably attaching said rod to said rear most connecting member includes: a seat vertical control rod having a first worm gear proximate to one end and extending perpendicular to and between said arms; a link rod disposed perpendicular to said vertical control rod having a second worm gear disposed at one end in operable engagement with said first worm gear and having a connecting portion at the end opposite the one end; and a V-shaped crank lever pivotably attached at one end to the connecting portion of said link rod, at the other end to said connecting rod, and at the apex thereof to said rear most connecting member.

Claim 13

A seat bottom structure as set forth in claim 10, wherein the V-shaped crank lever is also pivotably attached at the apex to at least one of said arms.

Claim 14

A seat bottom structure as set forth in claim 9 further comprising seat cover material and an elongated plate having a forward portion extending between and connecting the forward ends of said arms for securing the edges of seat cover material.

Claim 15

A seat bottom structure as set forth in claim 12, wherein the forward portion of the plate is U-shaped.

Claim 16

A seat bottom structure as set forth in claim 13, wherein the plate has rear portions extending substantially along the length of said arms.

Claim 17

A seat bottom structure as set forth in claim 9, wherein said U-shaped end portions are disposed with the openings of the U-shaped end portions facing in substantially the same direction.