Abstract: A portable vacuum system adapted to be worn on the back of an operator for collecting dust and debris generated during use of an air powered tool such as a grinder or a sander. The portable vacuum system is powered by the same pressurized air source used to power the tool, thus eliminating the need to tether the operator to additional hoses. The portable vacuum system comprises a collection bag assembly that has mounted thereto a venturi device which generates a vacuum pressure from a pressurized air supply. A vacuum hose is connected between the vacuum inlet to the venturi device and the power tool. A fluid manifold directs pressurized air through first and second on/off valves to the venturi device and the power tool to provide the operator with the ability to separately control the supply of pressurized air to each device.

Abstract: An expansion device for doing work comprised of a housing including first and second selectively expandable sections defining an internal chamber which contains a chemical motor. Upon activation of the chemical motor, the first and second chamber are driven apart with sufficient force to allow the device to do work. The chemical motor is generally an irreversible reaction which causes the expansion device to be maintained in an expanded position.

Abstract: A disposable environmentally controlled suit. The suit includes a coverall made of an inexpensive material which is relatively non-permeable to air. Elastic closures are provided at the neck and the terminal portions of the arms and legs. A manifold is formed in the back of the suit by an inner layer and an outer layer which forms a chamber therebetween. Outlet ports are provided for release of air from the chamber into the interior of the suit. A Hilsch tube is attachable to the manifold for supplying a cooled or heated air stream to the manifold. Suspenders hold the suit off of the shoulders of the user for providing circulation of air around the shoulders. The suit inflates upon injection of air into the manifold which keeps the suit away from the body of the user. Air is allowed to escape through the elastic closures. In a controlled manner such that the entire body of the user is kept cool or warm as desired.

Abstract: An automatic resin dispensing device comprising a gear pump for pumping resin and a piston pump for pumping catalyst. Both pumps are coupled to a single air motor which drives both pumps via a dual output gear box. The piston shaft of the catalyst pump is connected to a radially located pin on a disk that is rotatably coupled to the gear reduction output of the gear box. The stroke of the piston pump, and hence the amount of catalyst relative to resin dispensed, is varied by adjusting the radial position of the connecting pin on the disk. The resin pumping system and catalyst pumping system are separated within the device to improve the safety of the device and enhance its reliability.

Abstract: An envelope feeder for a printing press providing a unique feeder arrangement that allows multiple parallel feeding of stacks of differently sized and shaped envelopes to be fed into the press simultaneously. An envelope vacuum pick-up arrangement is coordinated with a feed roller that grabs the envelopes from the bottom end of open-ended, independently adjustable feeder trays, that can be fed with unprinted envelopes continuously without interrupting the printing process. Electronic logic sensing and control apparatus monitors the envelope feeding process such that, in case of misfeeds, the next following printing cycle is inhibited to avoid smearing of wet ink. Timing apparatus with manual control insures precise registration of the printed image even at high speed operation. Manual switches coordinated with the electronic control allows feeding from a single or from all feeder trays.