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| Number | Title | Issue Date |
| 4200230 | Swimming pool cleaning head A cleaning head system for use on the bottom of swimming pools includes a rotating nozzle opening formed by a curved elastic strip disposed in an annular region formed by substantially coextensive annular grooves, the elastic strip having concentric inner... | 04/29/1980 |
| 4193145 | Toilet flushing valve mechanism A flushing mechanism is disclosed for use in the tank of a toilet, utilizing a spool valve to accommodate various fluid pressures and to accomplish accurate control of volumetric flow. A housing is provided in the toilet tank, defining an inlet port which... | 03/18/1980 |
| 4181141 | Pneumatic circuit arrangement A pneumatic control for cyclic successive activation of a plurality of pressure fluid consumers and comprising a series of control modules abutting each other in side by side relation for controlling activation of respective ones of the consumers. Each co... | 01/01/1980 |
| 4180090 | 4/2 Way valve A pressure controlled 4/2 way valve, particularly for the alternating control of the feed conduits of two conduit - lubrication systems. Three cylindrical spaces are formed in a housing connected by channels with one another and each contain a piston for ... | 12/25/1979 |
| 4178954 | Diaphragm valve and valve system A new and improved automatic diaphragm valve having an inlet and two separate outlets for use in a fluid distribution system. The valve cycle automatically opens both outlets when fluid stops flowing into the inlet. Each time the fluid starts flowing thro... | 12/18/1979 |
| 4175579 | Device for automatic, selective watering of plants A device for automatically selectively watering plants in a predetermined order for predetermined times comprises a casing which is connectable to a source of water under pressure and which houses a turbine wheel arranged to be driven by the water and to ... | 11/27/1979 |
| 4127123 | Ventilator and method Ventilator having an inhalation phase and an exhalation phase in its operative cycle for use with a source of gas under pressure. A master sequencing cartridge having an inlet adapted to be connected to a source of gas under pressure and an outlet is prov... | 11/28/1978 |
| 4114515 | Adjustable self-reciprocating operator Automatically Self-Reciprocating sequencing valve for use with pneumatic power cylinders/actuators in systems operated at frequencies of a few cycles to a few thousand cycles per minute comprises a valve housing with a central bore adaptable to receive a ... | 09/19/1978 |
| 4112962 | Integrated pneumatic logic module A pneumatic logic control module is disclosed which includes three miniaturized, piloted, detented relay valves mounted on a pneumatic circuit board including a valve mounting plate, a circuit plate having routed flow paths formed in each face, and a conn... | 09/12/1978 |
| 4109670 | Combination check flow control and selector valve A combination check-flow control and selector valve that distributes fluid from a single inlet sequentially out through a plurality of outlets. The valve includes a housing with a selector chamber having a centrally located inlet and a plurality of outlet... | 08/29/1978 |
| 4105094 | Single line lubricant reversing feeder A single line lubricant reversing feeder for use in a centralized lubricating system, the feeder having a valving piston and a metering piston, by virtue of the movement of which a measured portion of the lubricant supplied to the feeder is delivered to a... | 08/08/1978 |
| 4100939 | Time cycle actuator A time cycle actuator having first and second chambers pivotally secured on opposite sides of a support such that a fluid may flow through a flow control valve from one chamber to the other. The chambers are arranged to move a valve element in a valve blo... | 07/18/1978 |
| 4098272 | Respirator A respirator is described wherein a plurality of pneumatic bistable elements are employed in an automatically operated pneumatic circuit. A constant inspiratory to expiratory ratio pneumatic circuit is provided to simplify respirator control. A demand sen... | 07/04/1978 |
| 4096875 | Pressure fluid-actuated oscillator A pressure fluid-actuated oscillator, especially suitable for use in lung ventilation equipment for emergency use, comprises a double-piloted 5-port valve and biased timer valves controlling the supply to its pilots to provide for repeated changeover of t... | 06/27/1978 |
| 4092995 | Multiple valve with automatic sequential operation The valve of this invention connects a source of water sequentially to separate outlet connections. A piston is moved by the water pressure through a forward stroke which determines the duration of the existing connection. The duration is adjustable by a ... | 06/06/1978 |
| 4086933 | Automatic pool cleaner system with timer device A timer device is connected into the water supply hose of an automatic swimming pool cleaner to control the flow of water to the drive jets. The controlled flow varies over the range of full, restricted and minimum or no flow so that the speed of the clea... | 05/02/1978 |
| 4077424 | Liquid distributor valve assembly A liquid distributor valve assembly in which an impeller means is disposed in a housing and is rotatable in the housing by the force of liquid entering the housing. A valve assembly is adapted to rotate in the housing in a manner to selectively control th... | 03/07/1978 |
| 4068334 | Inflatable body support apparatus A body support apparatus is disclosed as having alternatingly inflatable and deflatable cells and uninflated resilient body support material positioned between the cells. The cells are inflated by pressurized fluid such as air under the control of a contr... | 01/17/1978 |
| 4064898 | Purge and charge equipment A completely self-contained portable apparatus that is easily carried scrubs contamination from a sealed container and charges the scrubbed container with inert gas. A housing for the apparatus carries a reservoir for the gas, a service line for supplying... | 12/27/1977 |
| 4060078 | Ventilator and method Ventilator having an inhalation phase and an exhalation phase in its operative cycle for use with a source of gas under pressure. A demand flow accelerator is responsive to the pressure of the gases in a breathing head assembly and provides additional gas... | 11/29/1977 |
| 4056123 | Hydraulic oscillator In a hydraulic oscillator having a main body equipped with inflow and outflow ports wherein a vibratory member is actuated to cause self-excited vibration by pressurized oil passing from the inflow port inside an oil pressure chamber so as to generate alt... | 11/01/1977 |
| 4029119 | Valve and valve system A new and improved automatic valve having an inlet and two separate outlets for use in a fluid distribution system. The valve cycle automatically opens both outlets when fluid stops flowing into the inlet. Each time the fluid flows through the inlet the v... | 06/14/1977 |
| 4028877 | Fluid operated clock This fluid operated clock comprises a support stand which includes a shaft providing a pivot mounting for an oscillating housing, and which carries a reservoir above the housing for supplying fluid to housing inlet openings. The housing is partitioned to ... | 06/14/1977 |
| 4022239 | Hydraulic-metering multiple valve A hydraulic-metering, multiple-valve device for use primarily in a sprinkler system associated with large parcels of land. The valve device comprises a valve housing having an inlet and a plurality of outlets, wherein each outlet is controlled by correspo... | 05/10/1977 |
| 4007749 | Automatic pool cleaner system with timer device A timer device is connected into the water supply hose of an automatic swimming pool cleaner to control the flow of water to the drive jets. The controlled flow varies over the range of full, restricted and no flow so that the speed of the cleaner may be ... | 02/15/1977 |
| 4006624 | Pneumatic chromatograph An all-pneumatic process chromatograph having a pneumatically-actuated sample-injection valve, an orifice connected in the column output line to develop a pressure signal corresponding to fluid density, a pneumatic amplifier for strengthening the pressure... | 02/08/1977 |
| 4005726 | Thermomagnetic valve A hot fluid is directed through a valved conduit inlet. Downstream of the inlet, the conduit divides into a pair of outlets through which the hot fluid flows. The flow through the outlets is controlled by a pair of vertically oriented valves linked togeth... | 02/01/1977 |
| 3996956 | Electro-fluid interface device An electro-fluid interface device utilizes a control member that oscillates within a generally cylindrical chamber between an opposed pair of nozzles located at the ends of the chamber. Each nozzle is in fluid communication with a fluid supply, a fluid ou... | 12/14/1976 |
| 3993098 | Time cycle actuator A time cycle actuator having first and second chambers pivotally secured on opposite sides of a support such that a fluid may flow through a flow control valve from one chamber to the other. The chambers are arranged to move a valve element in a valve blo... | 11/23/1976 |
| 3981301 | Pneumatically controlled respiration device The device is of the type in which breathing gas, taken from a pressure-gas supply source through an injector and volumetrically metered in a pressure regulating valve, is supplied, in the inspiration phase, to the user and discharged, in the expiration p... | 09/21/1976 |
| 3974828 | Ventilator and method A ventilator with an inhalation phase and an exhalation phase in its operative cycle having an inlet adapted to be connected to a supply of gas under pressure and first, second and third outlets. A servo controller is provided having an inlet and an outle... | 08/17/1976 |
| 3972344 | Valve for water sprinklers and the like A valve for water sprinklers and the like, with an inlet and first and second outlets, has a hinged clapper biased to close the second outlet but held closing the first outlet by a dosing device after delivery of a given volume of liquid through the first... | 08/03/1976 |
| 3971398 | Apparatus for augmenting venous blood flow Apparatus, adapted for use in explosive as well as nonexplosive atmospheric environments, for alternately applying intermittent compression to the legs of a patient during surgery, postoperative recovery periods and other periods of muscular inactivity to... | 07/27/1976 |
| 3965934 | Fluid regulating devices Fluid regulating devices comprise a tube having an axial passageway adapted to be connected to a fluid supply pipe, the tube being formed with a radial opening communicating with the axial passageway, and a ring surrounding the tube at the radial opening ... | 06/29/1976 |
| 3942558 | Torsional reed reference fluidic oscillator A torsional reed reference fluidic oscillator operating within 0.1% of the desired frequency over a temperature range of -65° to +165°F and an operating pressure of from 1 to 4 psi. The oscillator includes a torsional reed fluidic amplifier and fluidic ... | 03/09/1976 |
| 3942518 | Therapeutic intermittent compression apparatus An apparatus for intermittently applying compression to a portion of a patient's body enclosed in a therapeutic appliance. A timer is operated from a regulated pressurized fluid source to generate control signals to a valve which alternately inflates and ... | 03/09/1976 |
| 3938552 | Regulated fluid tap particularly useful as water trickler nozzle A regulated fluid tap particularly useful as water trickler nozzle includes an inlet tube, a housing enclosing the tube outlet, and a regulating member disposed within the housing and set into vibratory movement, by the flow of the fluid, toward and away ... | 02/17/1976 |
| 3935789 | Reversing valve An improved air reversing valve, as for use with a pneumatic scaler, chisel or the like, comprising throttling means between the two sides of the valve disc whereby the tool's performance characteristics are generally improved. Additionally, the valve is ... | 02/03/1976 |
