초록 ▼

A retractable wheeled accessory for equipment stands is disclosed as having a collapsible axle tube pivotally attached to two interface members which are removably attached to an equipment stand such as a tripod. Wheels are connected to the axle by way of offset crank members. Pivotal rotation of th

A retractable wheeled accessory for equipment stands is disclosed as having a collapsible axle tube pivotally attached to two interface members which are removably attached to an equipment stand such as a tripod. Wheels are connected to the axle by way of offset crank members. Pivotal rotation of the axle tube by movement of a level arm causes the wheels to alternately engage and disengage a supporting surface. The invention can accommodate various positions of a tripod by adjusting the track of the wheel via the collapsible axle tube and by permitting the two interface members to pivot independently of the orientation of the axle tube.

대표청구항 ▼

A wheeled accessory for an equipment stand, the equipment stand having at least a first leg, a second leg and a third leg, the first and second legs defining a first plane, the wheeled accessory which comprises: an axle, the axle having a first end, a second end and a longitudinal axis; a first moun

A wheeled accessory for an equipment stand, the equipment stand having at least a first leg, a second leg and a third leg, the first and second legs defining a first plane, the wheeled accessory which comprises: an axle, the axle having a first end, a second end and a longitudinal axis; a first mounting interface, the first mounting interface having collar means for securing the first mounting interface to the first leg of the equipment stand, axle block means for mounting the axle to the first mounting interface for pivotal movement with respect thereto about the longitudinal axis of the axle, and means for mounting the axle block means to collar means for pivotal movement with respect thereto about an axis perpendicular to the first plane; a second mounting interface, the second mounting interface having collar means for securing the second mounting interface to the second leg of the equipment stand, axle block means for mounting the axle to the second mounting interface for pivotal movement with respect thereto about the longitudinal axis of the axle, and means for mounting the axle block means to collar means for pivotal movement with respect thereto about an axis perpendicular to the first plane; first crank member means for mounting a first wheel having an axis of rotation proximate the first end of the axle such that the axis of rotation of the first wheel is parallel to and offset from the longitudinal axis of the axle; second crank member means for mounting a second wheel having an axis of rotation proximate the second end of the axle such that the axis of rotation of the second wheel is parallel to and offset from the longitudinal axis of the axle; a lever having a first end and a second end; and means for mounting the first end of the lever to the axle for pivotal movement therewith between a lever raised position where the first wheel and the second wheel are each in contact with a support surface and a lever lowered position, spaced relatively below the lever raised position, where the first leg and the second leg are each in contact with the support surface.