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An energy dampening drawbar for use with receiver hitches and specialty types of hitches is described as including an elongated hollow shank having slots on opposite sides. A first cushion block is located within the shank and has a portion of the first cushion block adjacent one surface of a pin bl

An energy dampening drawbar for use with receiver hitches and specialty types of hitches is described as including an elongated hollow shank having slots on opposite sides. A first cushion block is located within the shank and has a portion of the first cushion block adjacent one surface of a pin block. The pin block has a hole that aligns with a portion of the two slots. A second cushion block is located within the shank adjacent another surface of the pin block. A first restraint prevents longitudinal travel within the shank by the first cushion block. A second restraint prevents longitudinal travel within the shank by the second cushion block. A plate is attached to one end of the shank to provide a surface for attaching a trailer coupling.

대표청구항 ▼

An energy dampening drawbar for connecting a trailer to a towing vehicle, comprising: an elongated hollow shank of predetermined outer shape and size with an elongated inner chamber of predetermined dimensions, said hollow shank having a top and an opposite bottom and having a first end and having a

An energy dampening drawbar for connecting a trailer to a towing vehicle, comprising: an elongated hollow shank of predetermined outer shape and size with an elongated inner chamber of predetermined dimensions, said hollow shank having a top and an opposite bottom and having a first end and having a second end that is disposed opposite to said first end and having a first side and having a second side that is disposed opposite to and parallel with said first side, and including a first slot in said first side and including a second slot in said second side, said first slot and said second slot being in parallel alignment with respect to each other and having a greater length than width, said greater length being in parallel alignment with the longitudinal axis of said hollow shank, and, said hollow shank including means for providing a barrier at said first end and means for providing a barrier at said second end; a block located within said chamber that is capable of longitudinal motion within said chamber, said block having a first block end disposed toward said first end and having a second block end that is disposed opposite to and parallel with said first block end and is disposed toward said second end and having a block top and an opposite block bottom and having a first block side and a second block side, said first block side and said second block side being disposed perpendicular with respect to said first block end and said second block end and with respect to said block top and said block bottom and further being disposed parallel with respect to said first side and said second side of said hollow shank, said block including a hole, said hole disposed from said first block side through to said second block side wherein said hole aligns with said first slot and said second slot; a first resilient block having a first resilient block end and a second resilient block end, said first resilient block located inside said chamber and having said first resilient block end disposed toward said first end and having said second resilient block end disposed toward said first block end wherein said means for providing a barrier at said first end prevents the longitudinal motion of said first resilient block end in a first direction toward said first end; a second resilient block having a second resilient block first end a second resilient block second end said second resilient block located inside said chamber and having said second resilient block second end disposed toward said second end and having said second resilient block first end disposed toward said second block end wherein said means for providing a barrier at said second end prevents the longitudinal motion of said second resilient block second end in a second direction that is generally opposite said first direction; and means for attaching said hollow shank to a towing vehicle, said means for attaching including said hole in said block that is aligned with said first slot and said second slot wherein said hollow shank is adapted for insertion into a receiver tube that is attached to said towing vehicle, said receiver tube having an opening through a pair of parallel and opposite sides of said receiver tube and adapted for inserting a retaining pin through said opening, through said first slot and said second slot and said hole through said block, whereby said block is maintained in position relative to said receiver tube and said hollow shank is adapted for longitudinal displacement within said receiver tube as defined by the length of said first slot and second slot and as further defined by the resiliency of said first resilient block and said second resilient block.