Abstract: Embodiments of the present disclosure generally relate to a novel ‘double kingpin’ type skateboard truck having multiple elastomeric bushings, where one or more of such bushings is an elongated bushing having two staggered mounting holes incorporated herein for the purpose of mounting the bushing upon two bolts in the double kingpin truck mechanism. The novel placement and novel form of the said bushing provides both enhanced overall stability to the truck, as well as a wider range of tension adjustability features to the double kingpin truck system. Moreover, increased shock absorption capabilities, ‘wheel wobble’ resistance and overall truck mechanism balance, permit the ‘double kingpin’ type truck to be more useable for higher speed skateboard riding purposes.

Abstract: A zero turning radius vehicle is disclosed having a power transmission operatively and independently engaged to each one of at least two driven wheels, and including at least one caster, supporting a portion of said vehicle weight, rotatably connected to the vehicle whereby the caster is operatively biased while the vehicle is operating at a side angle such that the caster neutralizes the gravitational force that would tend to drive the vehicle downward when traversing a slope.

Abstract: A wheel assembly for an infant carrier apparatus can include a shock absorber, and at least a wheel pivotally coupled with the shock absorber. The shock absorber is formed integrally in a single body comprising a cushion structure capable of elastic deformation, and a mount structure having a tubular shape adapted to assemble with a support frame of an infant carrier apparatus. Examples of the infant carrier apparatus can include an infant stroller apparatus.

Abstract: A height-adjustable industrial caster wheel includes a mounting plate, a swivel assembly that swivels relative to the mounting plate, and a spring housing that is movable relative to the swivel assembly. The mounting plate or the spring housing is secured to the swivel assembly, such that the relative position of the swivel assembly and either the mounting plate or the spring housing can be controllably altered to change the overall height of the height-adjustable industrial caster wheel. If needed, a locking mechanism can be used to maintain the relative position between the swivel assembly and the mounting plate or the spring housing. The height-adjustable industrial caster wheel can be adjusted by accessing the height-adjustable industrial caster wheel from above, eliminating the need to raise the pallet truck away from the floor to be able to access and adjust the height-adjustable industrial caster wheel.

Abstract: A trailer wheel assembly for mounting on the rear of a trailer has a structure that reduces or prevents oscillations about a vertical axis arising during high speed towing. The structure includes dual wheels mounted on an axle, a resilient support, and a suspension arm extending rearwardly and downwardly from the resilient support to the axle for the wheels.

Abstract: A stroller wheel suspension mechanism has a generally rigid carrier with a top mounting section connectable to a stroller frame and a downward facing surface. The carrier also has a depending spring section that extends downward from the top mounting section adjacent an end of the downward facing surface and that has a generally vertically oriented surface. The carrier also has a bottom spring section that extends from the depending spring section and that has an upward facing surface. The depending and bottom spring sections are resiliently deflectable relative to the top mounting section. A wheel mount is provided on the bottom spring section. A solid body damper of a resilient, flexible material is positioned within a damper region formed adjacent the downward facing, generally vertically oriented, and upward facing surfaces of the carrier.

Abstract: A suspension system (12, 112, 212, 312, 412) suited to use in a wheelchair (10) or other transportation system includes a first member (30, 130, 230, 330, 430) and a second member (32, 132, 232, 332, 432), which is pivotable relative to the first member. One of the first and second members includes a socket (42, 142, 242, 342) in which a bushing (60, 160, 260, 360) is mounted which receives a rigid member, such as a shaft (150, 250, 350) and or insert (55, 155, 255, 355) therein, the rigid member being coupled to the other of the first and second members. The bushing develops a resistance force as the second member pivots relative to the first1 structural member. The resistance force resists further pivoting of the second structural member relative to the first member.

Abstract: A suspension structure for a front wheel assembly of a wheelchair generally includes struts of front wheel assemblies disposed at corresponding mounting brackets on the frame of the wheelchair. The struts will rotate upward about the corresponding jockey wheels when the jockey wheels are passing an obstacle, and meanwhile it will effect an uplift of the front end of the frame of the wheelchair. As a result, the gravity center of the user will be shifted backward so as to reduce the load on the jockey wheels, by this way, the jockey wheels may traverse the obstacle without difficulties. Furthermore, the suspension for the front wheel assembly of a wheelchair is simply structured so as to facilitate the assembly and reduce the production cost as well.

Abstract: A suspension structure for front wheel assembly of a wheelchair generally includes struts of front wheel assemblies disposed at corresponding mounting brackets of frame of the wheelchair. Such that the struts may rotate upward about the corresponding jockey wheels when the jockey wheels are passing a curb or other obstacle of the like, and meanwhile effects an uplift of the front end of the frame of wheelchair, as a result, the gravity center of the user move backward so as to reduce the load on the jockey wheels, by this way, the jockey wheels may traverse a curb or the like without difficulties. Furthermore, the suspension for front wheel assembly of a wheelchair is simple structured relative to conventional wheelchair so as to facilitate the assembly and reduce the production cost as well.

Abstract: An anti-tip suspension for a wheelchair having rear casters is defined. The suspension includes a rocker arm support, a rocker arm and a spring. The rocker arm is pivotally attached to the rocker arm support so that it is rotatable with respect to the rocker arm support. The spring engages the rocker arm and rocker arm support, biasing them away from one another. The rocker arm includes a rotation limiter that limits the rotation of the rocker arm with respect to the rocker arm support in one direction.