Abstract: A flexible or flared tube connecting devices for handling gas or fluids has a threaded or snap-fit components for quickly attaching and detaching a coupling while achieving an effective seal that is not prone to leaking or breakdown due to weak sealing force or over-tightening of coupling components with resultant over-stressing of seal components. A spring applies compression force to a sealing body whereby the force applied from the spring is the sole source of compression force and is not susceptible to distortion due to over-tightening of the coupling.

Abstract: A self-aligning connection between a rotary and reciprocating pump piston allows relative radial movement between the pump piston and the rotary cam. The self-aligning connection is formed by a pin carried by the rotary cam and is positioned in a radial recess located in the pump piston. An improved drive for the rotary cam is perfected by a cam follower pin supported from the housing by a roller bearing race which is pressed fitted within a bore formed by the pump housing. The pump piston abuts a TEFLON pad located in the pump cylinder to reduce dead space and insure that the pump produces accurate volumes. The employment of different plastic materials between the rotary cam and the pump housing provides an improved bearing surface.

Abstract: Apparatus and method are provided for the essentially automatic filling with pressurized ambient air of non-elastic inflatable objects to predetermined overpressures; and operate through the creation and sensing of a fluidic effect in the inflatable object attendant the filling of the same, the discontinuation of that fluidic effect when the inflatable object has been filled to the predetermined overpressure, the sensing of the discontinuation of the fluidic effect and the discontinuation of the supply of pressurized air to the inflatable object in response thereto. Provisions are made for adjustment in the predetermined overpressure to which the inflatable object is filled, and for reversing the operation of the apparatus and method to deflate inflated objects for re-use.