초록 ▼

An apparatus for the application of a braking force to a wheel of a wheelbarrow, hand cart or other type of a cargo portage device includes a twist grip mechanism with a latching type of a ratchet attached to the handlebar of the device. As the twist grip mechanism is rotated a progressive braking f

An apparatus for the application of a braking force to a wheel of a wheelbarrow, hand cart or other type of a cargo portage device includes a twist grip mechanism with a latching type of a ratchet attached to the handlebar of the device. As the twist grip mechanism is rotated a progressive braking force is applied to the wheel by tightening a brake band that extends around a drum that is attached to the wheel. A cable is attached at one end to the twist grip mechanism and to the brake band at its remaining end. The ratchet maintains the braking force that is applied until a thumb release lever is depressed which disengages a ratchet dog from contact with any of a plurality of ratchet teeth.

대표청구항 ▼

1. A twist-grip brake for a cargo portage device, comprising:(a) a member adapted for attachment to a handlebar of said cargo portage device, said member adapted for rotation in an arc about a longitudinal axis of said handlebar, said arc extending for a predetermined distance; (b) means for applyin

1. A twist-grip brake for a cargo portage device, comprising:(a) a member adapted for attachment to a handlebar of said cargo portage device, said member adapted for rotation in an arc about a longitudinal axis of said handlebar, said arc extending for a predetermined distance; (b) means for applying a braking force to a wheel of said cargo portage device; and (c) means for actuating said means for applying a braking force, whereby said means for actuating is adapted to urge said means for applying a braking force subsequent to said member being rotated about said arc; a ratchet attached to said handlebar, said ratchet disposed in a fixed position relative to said handlebar and including a plurality of teeth, each of said plurality of teeth including a generally saw-tooth profile thereto, and including a thumb release lever attached to said member, said thumb release lever adapted to pivot about an axis and including a portion that is adapted to receive a thumb of an operator disposed on one side of said axis and including a ratchet dog that is disposed on an opposite side of said axis, and wherein said ratchet dog is adapted to engage in a position of cooperation with one of said plurality of teeth when said member is rotated about said arc and wherein said engagement of said ratchet dog with said one of said plurality of teeth is sufficient to retain said member in said position along said arc.