Device for quick fixing or dismounting respectively of a wheel from the supporting frame of a vehicle, particularly a pram or push-chair for children

Claim 2

A wheel mounting construction for engaging a wheel on a mounting axle for rotation thereon, comprising a mounting bracket adapted to be secured in a fixed position adjacent said axle, a plate slidably carried by said bracket and having a slot oriented so that the axle extends through the slot, a wheel having hub means associated therewith engageable over the axle for rotation on the axle and extending into said slot, and biasing means for biasing said plate to cause the plate to engage thE hub means and prevent axial withdrawal thereof, said plate being movable against said biasing means to move it out of engagement with said hub means and permit said hub means to be withdrawn axially off said axle, said hub means including a wheel sleeve portion having an end with a plurality of circumferentially spaced segmental portions each separated by a longitudinally extending slot, said segmental portions being springable together, said frame having a wheel mounting portion with a through opening through which said wheel sleeve portion extends, and an engagement sleeve fitted over the segmental end of said wheel sleeve portion and having a recess engageable in the wall bounding the slot of said plate.

Claim 3

A device according to claim 1, wherein said segmental portions include portions projecting outwardly from the periphery of said wheel sleeve portion, said engagement sleeve having an inwardly extending portion at the interior thereof engaging behind the projecting portions of said segmental portions.

Claim 4

A wheel mounting construction for engaging a wheel on a mounting axle, comprising a vehicle frame having a wheel axle, a mounting bracket secured to said frame nd having spaced apart top and bottom leg portions with at least one slot therein and secured adjacent the axle so that the axle extends between the top and bottom leg portions, a guillotine plate having a tab portion extending through the slot of the top leg portion and the slot of said bottom leg portion of said bracket and being slidable upwardly and downwardly in respect to said bracket, said guillotine plate having a keyhole shaped plate slot through which said axle extends with a large diameter upper portion and a smaller diameter lower portion connecting into said large diameter upper portion, a wheel having a hub sleeve portion engageable over the axle for rotatably supporting the wheel on the axle, a securement sleeve having a recess on its outer periphery locatable within the smaller diameter portion of the slot of said guillotine plate and engaged over said sleeve hub portion at a fixed axial location, and biasing means biasing said plate in a direction to cause engagement of said recess of said engagement sleeve member in the smaller diameter slot portion of the guillotine plate, said guillotine plate being movable against said biasing means to position the sleeve in the larger diameter portion of said slot and to free said sleeve with said plate for axial movement along the axle.

Claim 5

A wheel mounting construction for engaging a wheel on a mounting axle, comprising a vehicle frame having a wheel axle, a mounting bracket secured to said frame nd having spaced apart top and bottom leg portions with at least one slot therein and secured adjacent the axle so that the axle extends between the top and bottom leg portions, a guillotine plate having a tab portion extending through the slot of the top leg portion and the slot of said bottom leg portion of said bracket and being slidable upwardly and downwardly in respect to said bracket, said guillotine plate having a keyhole shaped plate slot through which said axle extends with a large diameter upper portion and a smaller diameter lower portion connecting into said large diameter upper portion, a wheel having a hub sleeve portion engageable over the axle for rotatably supporting the wheel on the axle, a securement sleeve having a recess on its outer periphery locatable within the smaller diameter portion of the slot of said guillotine plate and engaged over said sleeve hub portion at a fixed axial location, and biasing means biasing said plate in a direction to cause engagement of said recess of said engagement sleeve member in the smaller diameter slot portion of the guillotine plate, said guillotine plate being movable against said biasing means to position the sleeve in the larger diameter portion of said slot and to free said sleeve with said plate for axial movement along the axle.

Claim 6

A device according to claim 3, wherein said biasing means comprises a coil spring, said guillotine plate having a bottom portion with a bottom tab extending through a slot of said bottom leg portion of said bracket, said spring being coiled around said bottom top and biasing said plate portion upwardly to position the small diameter slot into engagement with the sleeve.

Claim 7

A wheel mounting base according to claim 3, wherein said wheel hub sleeve member has an end with a plurality of circumferentially separated segments which may be biased together to permit entry of said hub sleeve member into said securement sleeve, said segments being expandable to engage behind said securement sleeve to anchor said securement against axial withdrawal from said hub sleeve member, said guillotine plate having a top portion forming a tab extending upwardly through the slot of said top leg member which is in a position to be depressed downwardly for positioning said plate member with the large diameter portion surrounding said securement sleeve in a position at which said securement sleeve is free of said guillotine plate and may be withdrawn with said hub sleeve.

Claim 8

A wheel mounting construction for engaging a wheel on a mounting axle for rotation thereon, comprising a mounting bracket adapted to be secured in a fixed position adjacent said axle, a plate slidably carried by said bracket and having a slot oriented so that the axle extends through the slot, a wheel having hub means associated therewith engageable over the axle for Rotation on the axle and extending into said slot, and biasing means for biasing said plate to cause the plate to engage the hub means and prevent axial withdrawal thereof, said plate being movable against said biasing means to move it out of engagement with said hub means and permit said hub means to be withdrawn axially off said axle, said hub means including a wheel hub sleeve portion extending axially into said slot, an engagement sleeve fitted over said wheel hub sleeve portion and having a peripheral recess into which the wall portion bounding the slot in said plate is engageable, said wheel hub sleeve and said engagement sleeve having interengageable latch means for securing said wheel hub sleeve against axial withdrawal from said engagement sleeve.

Claim 9

A wheel mounting construction for engaging a wheel on a mounting axle for rotation thereon, comprising a mounting bracket adapted to be secured in a fixed position adjacent said axle, a plate slidably carried by said bracket and having a slot oriented so that the axle extends through the slot, a wheel having hub means associated therewith engageable over the axle for Rotation on the axle and extending into said slot, and biasing means for biasing said plate to cause the plate to engage the hub means and prevent axial withdrawal thereof, said plate being movable against said biasing means to move it out of engagement with said hub means and permit said hub means to be withdrawn axially off said axle, said hub means including a wheel hub sleeve portion extending axially into said slot, an engagement sleeve fitted over said wheel hub sleeve portion and having a peripheral recess into which the wall portion bounding the slot in said plate is engageable, said wheel hub sleeve and said engagement sleeve having interengageable latch means for securing said wheel hub sleeve against axial withdrawal from said engagement sleeve.