Abstract: A fluted piston for a volume-compensated pressurized adjustable length positioner. The cylinder is charged through the charging/discharging valve so that the opposed fluid chambers defined inside the cylinder bore by the slidably movable piston are filled with compressible fluid at elevated pressure. An actuating rod in the piston operates a valve in the piston to open communication between the opposed chambers and allow selective extension and retraction of the piston rod. The large-diameter piston rod has an elongated head configuration formed by flute ribs. These ribs provide bearing support for the extended piston rod and create a volume compensating space in the piston head to account for the large ratio of extended-rod cylinder volume to retracted rod cylinder volume.

Abstract: A gas cylinder for applications requiring height adjustments such as found in chairs, stools, or like structures supported by columns. The cylinder has an elongated rechargeable unit of double-wall construction provided with a springless check valve inside a fluid port thereof preferably all of molded plastic. A single-piece sealed plunger assembly includes a single actuating rod with velocity controls incorporated therein which permit vertical extension from collapsed to fully-extended positions. Depression of the actuating rod allows circulation of the pressurized fluid between the chambers, with pressure force acting to extend the plunger when the unit is unloaded. When the unit is loaded, the plunger can be retracted.

Abstract: A re-chargeable self-contained servo cylinder for the control of force with variable piston positions under load includes an elongated cylinder housing having a tubular body with open receiver end and closed opposite end by a cap which includes a central port provided with integral directional check valve for supply of working fluid under pressure during cylinder charging, a piston and rod assembly slidably received inside the cylinder including a rod end closure with seals slipped over piston rod and secured inside the open receiver end so as to protrude an end portion of the piston rod for attaching to a load carrying platform, an integral flow control valve with control rod inside an elongated central bore of the piston rod for control of working fluid communication between the sides of the piston via a fluid opening provided therein when cylinder becomes pressurized by the working fluid and for maintaining a given piston position inside cylinder fixed when the flow control valve is closed thereby also fix

Abstract: Disclosed is an improved check valve for in-line mounting with fluid conduits under pressure subject to directional flow control of the type comprising two components of simple configuration, the improvement including a tee shaped movable short valving pin with a seal secured adjacent pin head over a shank thereof inserted inside a small divider bore portion central to a housing bore with larger diameter end sections and adaptable to fluid flow control therebetween from a first direction by closing the fluid flow passages when the seal is forced against a first side of the divider wall inside a first bore section rendering valve bubble-tight shut until the directions of fluid changes shifting the pin with the seal axially away from the divider as far as the tee permits before abutting a second side of the divider wall inside a second bore section so as to render valve fully open, and vice-versa, including novel means for pin assembly and holding physically inside the housing bore by an elastomeric seal insert

Abstract: A simple solenoid operated valve for use with water and other fluids includes a valve operating section and a valving section interconnected by an elongated plunger passing therebetween by way of a simple separator spaced between said sections including a valving means in said valving section adaptable of maintaining valve in a first normally closed position wherein, when a solenoid coil is not energized, an end of said plunger which is contoured closes an inside diameter of a seal which may be of O-ring configuration bubble-tight shut while when the solenoid coil becomes energized electrically, rendering valve open for fluid communication between a first fluid supply and a second fluid exhaust port means incorporated into a valve housing adaptable of being produced from metal or plastics economically.

Abstract: A fluid proportioning diverter valve capable or selective flow control between 3 fluid ports incorporated inside an elongated valve housing is provided with a central differential diameter bore passing therethrough between the housing ends and adaptable of receiving slidably an elongated valving stem of which a first end serves as a diverter operating means substantially atop thereof while internally separated by a seal from a second stem end provided with an end seal to divert fluid valved between said ports in any flow ratio desired when the stem becomes shifted axially inside the bore to assume various positions permitting fluid flow between either a first fluid supply port means and a first fluid discharge port means entering the bore via a wall or the first fluid supply port means and a third bottom discharge port means inside a bottom closure means and defined by two extreme stem locations inside thereof while also permitting numerous other stem positions therein to feed both the first side wall and the

Abstract: An energy conserving air pump includes an air operating pump section and a separate fluid pumping section capable of handling pure fluids in concentrate form or in solution, and operates by the use of a single slug of air in the air operating section to shift a shuttle valve of differential diameter incorporated therein from a first to a second positions while simultaneously allowing air to actuate reciprocating pumping members incorporated into said fluid pumping section dispensing with complicated valves of conventional air pumps and allowing an automatic cycle repetition with the same air slug from a first pump atmospheric position which permits pump priming with suction of fluids pumped therethrough to a second pump discharge position, and vice-versa.

Abstract: A new breed of die cylinders operating at 1000-5000 psig. working fluid pressures and adaptable for use individually or by manifolding with punch presses to cushion dies can be operated with maximum rated pressure force against a force which a ram develops in one direction and in the opposite direction with partial pressure force which the die cylinders exert when force balanced. The following is accomplished by loading a piston underside by the same working fluid pressure when the piston bottoms inside a cylinder housing at the end of the ram induced stroke enabling an instant high pressure surge of fluid, be it Nitrogen gas or other working fluid, to enter the piston underside provided with a piston rod and exert a resistance force proportional to the net free area exposed thereto thereby providing force balanced cylinder operation.

Abstract: An energy conserving air motor with rotary actuation includes a pair of cooperating different diameter pistons coaxially arranged and connected rigidly to one another by a central connecting member provided with spur gear section adaptable of receiving a meshing pinion assembled inside an elongated housing provided with a diffential diameter bore passing therethrough and adaptable of receiving inside a larger diameter section which is blind a larger piston while smaller diameter section which is provided with fluid supply and exhaust port means receives smaller diameter piston while said pinion entering said housing perpendicularly substantially central to the housing ends so as to rotate therein when pistons move linearly inside bore between a first normally atmospheric and a second energized positions in response to the working fluid pressure supplied via fluid supply and exhaust port means by way of a 3-way solenoid or pilot operated directional valve so as to allow energization of the small diameter pisto

Abstract: A drastically simplified directional solenoid valve with top fluid inlet and bottom fluid exhaust ports employs a conventional electrical bobbin coil with a solenoid iron conveniently secured thereto in line with a simplified axially movable solenoid plunger in an operable relationship with a simple seal at the exhaust port, preferably of O-ring configuration, between a first plunger engaged position inside the seal to maintain valve normally closed when the solenoid coil is not energized electrically and a second position with plunger retracted from the seat of the seal when the coil is electrically energized turning said iron into a magnet with pull force capable of lifting the plunger from the seat to render valve open to exhaust while the plunger is being held against the iron until the coil becomes de-energized at which time the plunger is automatically shifted back to the first valve closed position against the seat by either the drag forces fluid flow provides or by additional biasing force of a compre

Abstract: A pressure letdown valve includes a housing with a bore passing therethrough which may be tapered and adaptable of receiving internally a coaxial central tube with tapered outside diameter and also two concentric sets of circular baffles frictionally secured in place within the tapers in an interjacent relationship therebetween and so arranged as to provide an alternating valve and baffle structure with multitude of flow reversals fluid passing through the valve must complete with accomplished throttling of high pressure fluid entering valve bore via a fluid supply port located in the center to proceed by way of central tube into the region of peripherally spaced alternately attached baffles respectively sealing on said bore and said central tube for a large pressure reduction through a process of energy conversion when flowing over the plurality of such baffles to exit at substantially lower pressure via a fluid exhaust port including internal valving means and means for a modular baffle assembly and dis-ass

Abstract: A solenoid operated metering pump for displacement of exact amounts of fluid pumped by reciprocation of pumping piston incorporating integral check valve has an elongated valve housing with solenoid operator serving as pump actuating means attached to one housing end while the other housing end is adaptable to serve as the fluid pumping means including an appropriate housing bore passing therethrough and adaptable to receive a differential diameter piston assembly slidably movable therein to reciprocate when solenoid operator becomes electrically cycled inducing fluid flow through appropriate pump chamber created therein between piston and housing bore portion provided with fluid supply port having a detachable check valve with a simple floater for a directional flow control therethrough, means of piston actuation from a first position checking flow and discharge of the fluid delivered to the pump chamber to a second position discharging exact fluid quantity per each stroke of pump reciprocation, and means of

Abstract: Universal momentary contact diverter valve is operated directly by axially disposed solenoid operators at each end of an elongated valve housing having a bore passing therethrough to receive a valving spool therein in an operable relationship with said solenoid operators so as to enable spool shifting directly to result in diversion of fluid flow passing therethrough and fluid exhaust therefrom via passages incorporated therein, energization of operator coils electrically accomplished momentarily by an application of voltage-overcharge-pulse to yield higher than conventional magnetic force.

Abstract: A simple momentary contact diverter valve is operated directly by axially disposed solenoid operators at each end of an elongated valve housing having a bore passing therethrough to receive a valving spool therein in an operable relationship with said solenoid operators so as to enable spool shifting directly to result in diversion of fluid flow passing therethrough between fluid supply and exhaust ports incorporated therein, energization of operator coils electrically accomplished momentarily by an application of voltage-overcharge-pulse to yield higher than conventional magnetic force resulting in more than conventionally accepted pull force spool experiences, thereby increasing capability of handling fluid pressures substantially above those attainable by direct solenoid operated valves of this type.

Abstract: A throttle valve for high pressure letdown includes an elongated valve housing with pressure reducing valve section which contains a plurality of conical baffles spaced therein along the length thereof stretching between a high pressure fluid supply port entering said valve housing through housing wall perpendicularly and an axially disposed fluid exhaust port for low pressure discharge of the fluid subjected to torture pathway accompanied by multitude flow reversals with only limited fluid expansion and contraction processes induced thereto forcing fluid expansion when it passes large diameter edge of one baffle first before it is forced to contract immediately thereafter when passing small diameter orifice of another baffle spaced a short distance away until all baffles along the way are crossed extracting huge energy amount from high pressure fluid to result in a low pressure fluid exhaust from the valve, including means for flow and pressure drop modulation by varying position of baffles relative to net f

Abstract: A linear pull actuator converts working fluid such as halogenated hydrocarbons into vapor by electrical heating element housed inside a shell, generating a vapor pressure against a rolling membrane secured inside actuator so as to respond to the vapor pressure linearly delivering an end force to an integral first piston and tube assembly which is adaptable to axially move inside the housing proper against spring biasing means along with an externally mounted second piston of a piston and rod assembly secured thereto by a spring so as to have rod end passing centrally through the tube protrude a distance out of the shell end for a position change from a first rod end protruded when electrical heater is not energized electrically to a second rod end retracted position with work when pulled away by the pistons due to the vapor pressure of the working fluid when the electrical heater is energized electrically, de-energization of the electrical heating element electrically returns the rod end to the first protrude

Abstract: A three ported momentary contact diverter that doubles as a mixer valve, having a housing with a central bore passing therethrough including an axially movable elongated stem slidably received therein,and closed at each end by electrical solenoid operators, allows a pressurized fluid flow from a first fluid supply port to a second fluid receiver port when neither of the solenoids is electrically energized, and reverses the fluid flow from the first fluid supply port to a third fluid receiver port when simultaneously both solenoid operators become electrically energized momentarily to permit pressurized pilot fluid from the supply port to entersolenoid cavity via internally piloted fluid passages inside said elongated stem initiating each with a separate pilot opening in an overlapping relationship at the opposite sides of a central stem piston, comprising valving means, so as to permit pressurization of a first stem end by said pilot fluid while a second stem end is de-pressurized, with resultant stem movemen

Abstract: An internally piloted shut-off valve for use with cryogenic fluids incorporates a short valve housing with normally closed valve closure means incorporated therein and fluid passages with ports for fluid flow therethrough including an elongated extended stem protruding therefrom on top of which a solenoid operator is received in the stem end opening so as to define a cavity therein housing a large piston interconnected with the valve closure means by an internally piloted concentric tubing disposed coaxially with the stem and, in combination with large piston, comprising valve actuating means which permit the use of conventional solenoid operator and a trickle of cryogenic fluid converted to vapor inside pilot passage of the tubing and supplied to the cavity at atmospheric temperature when solenoid is enerized, creating pressure differential therein capable of maintaining valve open until the solenoid operator is de-energized, allowing valve closing automatically.

Abstract: A solenoid operated metering pump for displacement of exact amounts of fluid pumped by reciprocation of pumping piston incorporating integral check valve has an elongated valve housing with solenoid operator serving as pump actuating means attached to one housing end while the other housing end is adaptable to serve as the fluid pumping means including an appropriate housing bore passing therethrough and adaptable to receive a differential diameter piston assembly slidably movable therein to reciprocate when solenoid operator becomes electrically cycled inducing fluid flow through appropriate pump chamber created therein between piston and housing bore portion provided with fluid supply port having a detachable check valve with a simple floater for a directional flow control therethrough, means of piston actuation from a first position checking flow and discharge of the fluid delivered to the pump chamber to a second position discharging exact fluid quantity per each stroke of pump reciprocation, and means of

Abstract: An internally piloted reversing refrigerant valve for selectively porting fluid from a compressor into an air-conditioning system doubling as heat pump through a five-ported valve of which ports one, two, three and four are employed with air-conditioning system when valve is in a first position, while when the position of valve is changed to a second reversed position, ports one, three, two and five are employed with heat pump system, said valve so constructed that the first and second ports allow fluid to be delivered to a refrigeration system for a return to compressor through ports three and four of a valve housing provided with a slidably movable piston assembly and a pair of operators including valve means incorporated therein so as to allow a complete fluid reversal and refrigerant delivery from compressor to heat pump through the first and third ports for a return to compressor through ports two and five facilitating means for a simple valve to serve two flow patterns through an easy valve shifting ope