Motorcycle backrest device

Claim 2

In a cycle having an elongated seat for accomodating both an operator and a passenger in a tandem relationship and a sissy bar carriage structure including a pair of upright frame members that are inclined rearwardly and toward each other, the improvement comprising a backrest device including a backing plate, a padded backrest secured to said backing plate and means for selectively positioning said backrest and backing plate between a first position adjacent said frame members for accomodating the back of said passenger and a second position longitudinally spaced from said frame members for accomodating the back of said operator in the absence of said passenger, said selectively positioning means comprising: a pair of laterally spaced flanges mounted on said backing plate; a horizontally positioned pivot stud on each of said flanges; a pair of laterally spaced swing arms, a first end of each of said arms being pivotally mounted on one said pivot stud respectively; a horizontally positioned pivot stud on each of said upright frame members, the other end of each of said arms being pivotally mounted on one said upright frame member pivot stud respectively whereby said backrest pivots relative to said arms in a first direction as said backrest moves from said first to said second position; snubber stop means interconnecting said arms, abutment of said stop means with said backing plate in said second position preventing further pivotal movement of said backrest in said first direction and engagement of said backrest with said seat in said second position preventing further pivotal movement of said backrest in a direction opposite to said first direction; and means for latching one of said arms to one of said upright frame members when said backrest is in said first position.

Claim 3

The invention as defined in claim 1 in which each upright frame member pivot stud has a spacer mounted thereon having one end face inclined with respect to its axis for mating abutment with the upright frame member to accomodate the inclination of the upright frame member with resect to said upright frame member stud.

Claim 4

In a cycle having an elongated seat for accomodating both an operator and a passenger in a tandem relationship and a sissy bar carriage structure including a pair of upright frame members that are inclined rearwardly and toward each other, the improvement comprising a backrest device including a backing plate, a padded backrest secured to said backing plate and means for selectively positioning said backrest and backing plate between a first position adjacent said frame members for accomodating the back of said passenger and a second position longitudinally spaced from said frame members for accomodating the back of said operator in the absence of said passenger said selectively positioning means comprising: a pair of laterally spaced flanges mounted on said backing plate; a horizontally positioned pivot stud on each of said flanges; an X-frame contiguration of swing arms, a first end of each of said arms being pivotally mounted on one said pivot stud respectively, spacers having inclined end faces and mounted on said first pivot stud; a horizontally positioned pivot stud on each of said upright frame members, the other end of each of said arms being pivotally mounted on one said upright frame member pivot stud respectively whereby said backrest pivots relative to said arms in a first direction as said backrest moves from said first to said second position, spacer having inclined end faces also mounted on said upright frame member pivot stud; snubber stop means interconnecting said arms, abutment of said stop means with said backing plate in said second position preventing further pivotal movement of said backrest in said first direction and engagement of said backrest with said seat in said second position preventing further pivotal movement of said backrest in a direction opposite to said first direction; and means for latching one of said arms to one of said upright frame members when said backrest is in said first position.

Claim 5

In a cycle having an elongated seat for accomodating both an operator and a passenger in a tandem relationship and a sissy bar carriage structure including a pair of upright frame members that are inclined rearwardly and toward each other, the improvement comprising a backrest device including a backing plate, a padded backrest secured to said backing plate and means for selectively positioning said backrest and backing plate between a first position adjacent said frame members for accomodating the back of said passenger and a second position longitudinally spaced from said frame members for accomodating the back of said operator in the absence of said passenger said selectively positioning means comprising: a pair of laterally spaced flanges mounted on said backing plate; a horizontally positioned pivot stud on each of said flanges; an X-frame contiguration of swing arms, a first end of each of said arms being pivotally mounted on one said pivot stud respectively, spacers having inclined end faces and mounted on said first pivot stud; a horizontally positioned pivot stud on each of said upright frame members, the other end of each of said arms being pivotally mounted on one said upright frame member pivot stud respectively whereby said backrest pivots relative to said arms in a first direction as said backrest moves from said first to said second position, spacer having inclined end faces also mounted on said upright frame member pivot stud; snubber stop means interconnecting said arms, abutment of said stop means with said backing plate in said second position preventing further pivotal movement of said backrest in said first direction and engagement of said backrest with said seat in said second position preventing further pivotal movement of said backrest in a direction opposite to said first direction; and means for latching one of said arms to one of said upright frame members when said backrest is in said first position.