Combination standing and sitting structure

Claim 2

A combination standing and sitting structure for a vehicle having at least three wheels, comprising: a vehicle frame base including an upwardly inclined forward portion and a substantially flat rearward horizontal platform portion for standing thereon, a generally Y-shaped support correspondingly joined to said base forward inclined and rearward platform portions respectively and having an intermediate portion, said Yshaped support being tubular throughout including said intermediate portion which is horizontally parallel to said platform portion, a beam carried on said intermediate portion of said Y-shaped support, a channel-shaped track member in complementary readily sliding engagement with said beam, a seat resiliently carried on said channel-shaped track member freely movable forwardly and rearwardly when said seat is unoccupied, said seat when occupied being held in position against sliding prevented by frictional engagement between said channel-shaped track member and said beam, said beam being substantially Ishaped and welded along lower surface thereof to said tubular intermediate portion, and a box-shaped upper portion on said beam along which said channel-shaped track member is slidable.

Claim 3

A combination standing and sitting structure according to claim 1, in which only three fastening means anchor extremities of said Y-shaped support to said base forward inclined and rearward platform portions respectively.

Claim 4

A combination standing and sitting structure according to claim 1, in which said box-shaped upper portion is squared tubing welded onto said beam, said beam for substantially half length thereof being welded to said intermediate portion of said tubular support an said squared tubing being longer than said beam though welded to said beam for a major length distance of said squared tubing that extends rearwardly in a cantilever manner.

Claim 5

A combination standing and sitting structure according to claim 1, in which a transverse portion is carried on said channel-shaped track member and forms a T-shaped configuration therewith, and at least three springs being secured collectively between said seat and said track member with said transverse portion.

Claim 6

A combination standing and sitting structure according to claim 4, in which there is a total of four springs including two between said seat and said track member and two between said seat and said transverse portion, said seat when occupied having a downward force thereon to impart a slight tilt of said track member with respect to said box-shaped upper portion of said beam for frictional bind to hold said seat stable against sliding movement and readily releasing said seat when unoccupied for sliding movement forwardly to facilitate standing on said platform portion.

Claim 7

A combination standing and sitting structure according to claim 5, in which said track member has downwardly extending side portions and inwardly extending flanges respectively extending toward each other from said side portions, said track member including said side portions and said flanges having a sufficient clearance gap with respect to said box-shaped upper portion of said beam for said tilt to be possible.

Claim 8

A combination standing and sitting structure according to claim 6, in which an abutment projects downwardly from one of said flanges, and a stop extends laterally from at least one side of said beam, said abutment being engageable with said stop to limit rearward sliding movement.

Claim 9

A combination standing and sitting structure according to claim 7, in which said track member has an inclined edge at a forward end thereof engageable with said tubular support to limit forward sliding movement.

Claim 10

An adjustable sitting structure and support combination for use on a vehicle having at least three wheels and having a vehicle-frame base including a forward portion as well as a rearward portion, improvement therewith which comprises: a generally Y-shaped support having three-point connection separably and correspondingly connectable to the base forward portion and to the base rearward portion respectively and having an intermediate portion, said Y-shaped support being tubular throughout including said intermediate portion, a beam carried on said intermediate portion of said Y-shaped support, a channel-shaped track member in complementary readily sliding engagement with said beam, a set resiliently carried on said channel-shaped track member freely movable forwardly and rearwardly when said seat is unoccupied, said seat when occupied being held in position against sliding prevented by frictional engagement between said channel-shaped track member and said beam, said beam being substantially I-shaped and secured along a lower surface thereof to said intermediate tubular member, a box-shaped upper portion on said beam along which said channel-shaped track member is slidable, a transverse portion carried on said channel-shaped track member and forming a T-shaped configuration therewith, and at least three springs being secured collectively between said seat and said track member with said transverse portion.

Claim 11

An adjustable sitting structure and support combination for use on a vehicle having at least three wheels and having a vehicle-frame base including a forward portion as well as a rearward portion, improvement therewith which comprises: a generally Y-shaped support having three-point connection separably and correspondingly connectable to the base forward portion and to the base rearward portion respectively and having an intermediate portion, said Y-shaped support being tubular throughout including said intermediate portion, a beam carried on said intermediate portion of said Y-shaped support, a channel-shaped track member in complementary readily sliding engagement with said beam, a set resiliently carried on said channel-shaped track member freely movable forwardly and rearwardly when said seat is unoccupied, said seat when occupied being held in position against sliding prevented by frictional engagement between said channel-shaped track member and said beam, said beam being substantially I-shaped and secured along a lower surface thereof to said intermediate tubular member, a box-shaped upper portion on said beam along which said channel-shaped track member is slidable, a transverse portion carried on said channel-shaped track member and forming a T-shaped configuration therewith, and at least three springs being secured collectively between said seat and said track member with said transverse portion.