Abstract: A wheel assembly for a trunk-attached carriage includes an integrally formed wheel bracket having a vertical, a side and a bottom plate for mounting onto a lower rear corner of a trunk, a compression spring, a short wheel axle, a locking member, and a wheel. The wheel bracket defines a wheel-space for the wheel to locate therein. The wheel axle transversely extends across behind the vertical plate of the wheel bracket to pass through an axle hole on the wheel, so that the wheel is rotatably mounted on the wheel axle and connected the wheel bracket. An end of the wheel axle close to the side plate of the wheel bracket is connected to a diameter-reduced inner end of the locking member, so that the wheel axle can be turned into a locked position on the wheel bracket by turning a diameter-expanded outer end of the locking member. And, by turning the locking member in a reverse direction, the wheel axle can be removed from the wheel bracket for replacement of any damaged component of the wheel assembly.

Abstract: A quick release fastener having a pin and a retainer, with the pin having a shaft of a diameter A with a head at one end of the shaft, and having a T-shaped tip at the other end of the shaft, the T-shaped tip having a stem in line with the shaft and opposed transverse arms, with the stem of the tip of a diameter B less than the diameter A, and with the distance across the transverse arms greater than the diameter B, and with the stem of a length C, the retainer having a body with an opening for the tip of the pin, the body having an inner end for passing the tip of the pin and an outer end with transverse notches for receiving the arms of the tip, the body having a ramp adjacent each of the notches, with the length D of the body between the inner end and the ramp not greater than the length C.

Abstract: A flexible tie strut for supporting both compressive and tensile forces, the flexible tie strut includes a tension member and a coaxially mounted compression member, the compression member and the tensile member are interconnected at their respective ends. A coupler for interconnecting flexible tie struts, and a system of couplers and struts are also disclosed. Additionally, wheels are disclosed that have axles having both male and female connection means.

Abstract: A wheel shaft mounting assembly for a handcart includes a pair of lug portions each respectively formed on a distal end of a wheel shaft and inserted in a hole defined in a supporting post, a pair of sleeve members each respectively mounted around and slidable on a lower end of the supporting post, an arcuate recess defined in a peripheral portion of each of the sleeve members, a vertical passage defined in the peripheral portion of each of the sleeve members from a free end thereof to a position where the arcuate recess terminates, the arcuate recess communicating with the vertical recess and having a diameter greater than a width of the vertical recess, the wheel shaft having a diameter substantially greater than the width of the vertical recess and substantially less than the diameter of the arcuate recess.

Abstract: A construction toy set whose main component is a cubical open-top box, the bottom and side walls of which are divided into quadrants, each having a keyhole therein and a coupling collar encircling the keyhole and projecting from the quadrant. Also included in the set are cylindrical spacers that fit over the collars and extend therefrom, wheels having cylindrical hubs that can slip over the spacers which then function as axles, and hub caps that rest against the outer end of the spacers or the wheel hubs, each cap having a center keyhole matching the quadrant keyhole. The components can be assembled and interconnected to create different structures by means of connector bolts each having a key at one end capable of passing through the keyholes.

Abstract: A wheel for a toy vehicle has a device whereby the wheel can be releasably and coaxially attached to a hub mounted on an axle of the toy vehicle and/or to another wheel by way of a bayonet coupling so that wheels can be easily added or removed to increase or decrease the number of wheels on any axle or to interchange wheels with different tire treads. The coupling device is supported relative to a rim of the wheel so as to be coaxial therewith and angularly movable relative thereto. The coupling device has a part on an outer side of the wheel for enabling the coupling device to be turned angularly and a first part of the bayonet coupling on the inner side of the wheel. The second part of the bayonet coupling is provided on the hub and/or a like wheel.

Abstract: A removable transport wheel assembly for a ground penetrating machine such as a roto tiller for providing removable wheels for movement of the machine from place to place and loading and unloading. The machine has a transverse power driven shaft carrying earth working implements and having tubular transverse ends. Pin assemblies have shanks that pass diametrically through the transverse ends of the shaft. A pair of wheels are provided each having a stub axle with a diameter to be slip fitted in a transverse end of the shaft, and with an enlarged shoulder to engage the transverse end of the shaft to limit axle movement of the axle into the shaft. Each stub axle has a slot which engages the shank of the pin assembly. At the inner end of the slot is a groove which provides a seat for the shank of the pin assembly to releasably fasten the wheels to the shaft of the machine for transport from place to place. The wheels are readily removed for using the machine in an earth working function.

Abstract: Disclosed is a demountable wheel suitable for use on toy vehicles. The demountable wheel includes a first member that is rotatably mounted in a permanent or semi-permanent arrangement on an axle. The wheel has a second member including a tire which is demountably supported on the first member.