Abstract: This invention provides in an article of manufacture having a fabric support surface: a fabric support surface; a peripheral frame for the support surface, said frame having opposed base sections and opposed flexible arch sections extending between the base sections; and arch flexing means for moving the opposed base sections towards each other to flex the arch sections outwardly of each other and for maintaining the base sections from separation whereby to tension the fabric support surface between the arch sections and form a firm support for weight placed thereon and to restrain the effect of weight thereon from moving the opposed arch sections inwardly of each other.

Abstract: A wheelchair for large individuals includes front casters mounted substantially forward of the user's center of gravity. Front caster and rear wheels are mounted on the same rigid member. The rigid member is pivotally attached to the rear of the frame while the front includes suspension means extending between the rigid member and the frame. A side plate provides universal adjustability for positioning the backrest, for pivoting the armrests and for seat height and tilt adjustment. A telescoping tube engages the ground when the wheelchair is leaned back to prevent tipping.

Abstract: This invention relates to a portable medicant injection device having a diaphragm mounted within its housing and a hypodermic needle that moves in response to the movement of the diaphragm when pressurized gas is released into the housing.

Abstract: A process, system and pressure chamber for the automated sterilization of articles, particularly medical or dental instruments is disclosed, which is simple to use and economically efficient by comparison with conventional autoclaves and steam sterilizing system. Steam is generated by the pulsed injection of a controlled quantity of water into a heated boiler whenever it runs dry. The boiler is coupled in a closed-loop system to a relatively small pressure chamber in the form of a cassette that is readily inserted and removed from a holder comprising means for connecting the chamber to a steam inlet conduit and a venting conduit, the latter being closed off during pressurization of the chamber. By automated monitoring of the boiler and chamber temperatures, conditions in the chamber are measured and the boiler and valves in the system controlled to effect a sterilization cycle.

Abstract: A portable seating assist device for use on a wide range of seating furniture comprises a base portion to be placed on the horizontal surface of a chair or the like and a seating surface which is hingedly mounted to the base. A compression spring is mounted between the seating surface and base to urge the two apart an allow upwardly assisted motion between a closed and open position. The seating surface is hinged in two sections so that the rear section forms a stable platform in the raised position. Levers at the front corners of the seating surface assist in initiating the lifting action.

Abstract: A process, system and pressure chamber for the automated sterilization of articles, particularly medical or dental instruments is disclosed, which is simple to use and economically efficient by comparison with conventional autoclaves and steam sterilizing system. Steam is generated by the pulsed injection of a controlled quantity of water into a heated boiler whenever it runs dry. The boiler is coupled in a closed-loop system to a relatively small pressure chamber in the form of a cassette that is readily inserted and removed from a holder comprising means for connecting the chamber to a steam inlet conduit and a venting conduit, the latter being closed off during pressurization of the chamber. By automated monitoring of the boiler and chamber temperatures, conditions in the chamber are measured and the boiler and valves in the system controlled to effect a sterilization cycle.

Abstract: A process, system and pressure chamber for the automated sterilization of articles, particularly medical or dental instruments is disclosed, which is simple to use and economically efficient by comparison with conventional autoclaves and steam sterilizing system. Steam is generated by the pulsed injection of a controlled quantity of water into a heated boiler whenever it runs dry. The boiler is coupled in a closed-loop system to a relatively small pressure chamber in the form of a cassette that is readily inserted and removed from a holder connecting the chamber to a steam inlet conduit and a venting conduit, the latter being closed off during pressurization of the chamber. By automated monitoring of the boiler and chamber temperatures, conditions in the chamber are measured and the boiler and valves in the system controlled to effect a sterilization cycle.

Abstract: A campstove burner includes a burner box which is located above the burner pan of the burner. The burner rings are positioned between the burner pan and the burner box, and a fuel and air mixture within the burner box flows through the burner rings where it is ignited. Since the burner box is located above the burner pan, liquid fuel within the burner box will flow through the burner rings and will be ignited in the burner pan outside of the burner box. The burner box includes an L-shaped aspirator tube for mixing fuel and air. An inlet end of the aspirator tube communicates with a source of primary combustion air, and a fuel tube extends into the outlet end of the aspirator tube for aspirating combustion air into the inlet end. The burner box includes a generally cylindrical sidewall and the outlet end of the aspirator tube directs the fuel and air mixture generally tangentially to the inside of the cylindrical sidewall to promote swirling and mixing of the fuel and air.