A crutch carry-all attachment for holding letters, papers, cigarettes, pocket radios, pencils and the like, of unitary preferably all plastic construction having outwardly opening grooves which engage the side rails of a crutch to removably secure the attachment in place.

An all-wheel-drive vehicle, particularly a fork-lift truck suitable for use on rough terrain, with at least one wheel steerable over an angle of substantially 90.degree. in each direction. To avoid wheel slip, drive motors of the vehicle are arranged to provide a differential action between steerable and non-steerable wheels at intermediate steering angles, and to transmit drive only to the steerable wheel or wheels at large steering angles approaching or at 90.degree.. The drive motors are pref...

A protective helmet of the type which substantially completely surrounds the wearer's head to provide maximum protection from otherwise hazardous conditions encountered during sand blasting, steam or high pressure water jet cleaning, welding, and other operations requiring protection from dust, fumes, gases, and other dangerous environmental conditions is disclosed, wherein improved air distributing means is provided within the helmet to achieve improved air circulation at a reduced noise level ...

A practical all plastic headlamp is disclosed comprising, for the lens and reflector, an engineering plastic having a heat distortion temperature in excess of 130.degree. C.

An all-pyrotechnic inflator, for generating an inflating gas, includes: an elongated enclosure means, a linear ignitor, and a pyrotechnic material. The elongated enclosure means has a longitudinal axis and an outlet means for passage of the gas. The linear ignitor is arranged within the enclosure means and extends along at least part of the longitudinal axis of the enclosure means. The pyrotechnic material is disposed within the enclosure means and extends along at least part of the longitudinal...

An outer material layer is sized in length to extend from above the rim of a hat to below the collar area of a user and sized in width to extend around the rim of the hat rearward between about the temples of the user. An inner material layer is secured to the outer layer about the edges thereof and in between the upper edges and lower edges of the outer layer to form a pocket. A first insert is made of a pliable liquid absorbent material and is sized to fit within the pocket. An elastic band is...

An electronic differential speed control circuit for driving the inboard and outboard A.C. wheel motors at different relative speeds depending upon the steering angle during a turn. An electrical circuit for sensing the torque of the tractor's wheel motors to maintain a constant implement draft. A hollow tubular axle pivots around the tractor's longitudinal material-transferring tunnel to conserve space and permit mounting of the wheel motors within the axle. The tunnel has two material-transfer...

An agricultural do-all machine for performing multiple farming operations including harvesting and loading crops into a tow behind vehicle. The do-all machine, briefly described, comprises a vehicle frame designed around an underbelly conveyor having crop clearance therebetween, and a pair of opposite hand implement support booms carrying belt conveyors which feed crops laterally onto the underbelly conveyor. The underbelly conveyor moves the crop underneath the frame of the machine to another v...

A mechanism for sensing that all the leads of a dual-in-line electrical component are in their proper position projecting through the appropriate openings in a printed circuit board. The sensor uses fiber optics to indicate that all the leads are properly positioned by using light reflected from the lead to activate a photo transistor which indicates to the computer controlling the machine operation that all the leads are properly positioned.

This all-purpose boat is designed for pleasure or survival, and may be used in salt, fresh, or chlorinated water, and may also be adapted for use on ice and snow, and may be further adapted for use on dry land, by the employment of wheels. Primarily, it consists of a hull fabricated of a polyethylene foam, which is provided with cut-out slots for frictionally receiving a front cowl and storage unit, a mast and sail plate, a seat, and a storage chest. It further includes a detachable outrigger un...