Class 137/103 - Vacuum or suction pulsator type (e.g., milking machine)

Subclass of Class 137 - Fluid handling
Definition: Systems in which an outlet or receiver is alternately connected
No. of patents: 30
Last issue date: 12/19/2000

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Number	Title	Issue Date
6161580	Pulsator A pulsator comprises a first circuit having a first outlet (2) and a second outlet (3), connected alternatively to a first pressure level and a second pressure level, respectively. Furthermore, the pulsator comprises a second circuit, which comprises a fi...	12/19/2000
5395350	Paracentesis valve Disclosed is a paracentesis valve apparatus and method of using the valve. The valve comprises a valve body having three apertures and a bypass passageway. A movable valve member with truncated end portions moves linearly within the valve body by means of...	03/07/1995
5265638	Magneto-pneumatic intermittent suction device An intermittent suction device for removing fluids from a patient where the duty cycle between the OFF and ON cycles is controlled by a magnetically susceptible diaphragm that switches back and forth between first and second positions, representing ON and...	11/30/1993
5265639	Magneto-pneumatic timing device A magneto-pneumatic timing device is disclosed that provides a pressure signal alternating between a high and a low pressure output signal. The duty cycle may be varied as well as the overall cycle time. A magnetically biased flexible diaphragm divides a ...	11/30/1993
5167200	Pulsator for milking machines A pulsator for milking machines comprises a bolt which travels back and forth in a housing and activates a slide. The slide alternately connects the pulsator's outlets to a source of vacuum and to the atmosphere. A diaphragm accommodated in a chamber at e...	12/01/1992
4909187	Pulsator for milking machines The operating chambers in a pulsator have axially movable partitions that make it possible to vary their capacities. The primary effect of varying the capacities is to vary the rate of the pulsator in a very simple way. It is also possible, however, to el...	03/20/1990
4782849	Control unit for intermittent suction system An intermittent suction regulator is disclosed operating from a vacuum system and is used to provide a plurality of pneumatic output signals to a positive pulse device for returning fluids removed from a patient during drainage thereof to clear the remova...	11/08/1988
4643132	Pulsator for milking machines A pulsator for milking machines has two diaphragms connected by a rod with each diaphragm dividing a pressure chamber into a processing space and a damping space. The damping spaces communicate through a channel that is provided with a throttle. The proce...	02/17/1987
4558843	Air inlet valve for admitting air to the milk drain conduit of a teat cup or collector piece An air inlet valve for admitting air to the milk drain conduit of a milking cup or collector piece includes a housing secured to the milking cup or collector piece, a diaphragm clamped within the housing, and a valve poppet secured to the diaphragm so as ...	12/17/1985
4538634	Vacuum pulsator valves A vacuum pulsator valve for milking machines is disclosed comprising a pair of valves controlling the alternate application of vacuum and air pressure in a line connected to the pulsator the pulsator including adjustable bleed valves operative to control ...	09/03/1985
4513766	Vacuum pulsator valves A vacuum pulsator for milking machines comprises a pair of valves controlling the alternate application of vacuum and air pressure in a line connected to the pulsator, the pulsator including adjustable bleed valves operative to control the frequency of al...	04/30/1985
4508134	Controlling EGR in an internal combustion engine and fluid pressure signal controller therefor Engine exhaust gas is recirculated by a fluid pressure actuated valve receiving a control signal from a controller which receives and modulates engine induction vacuum to provide a primary source and receives a carburetor throttle-blade controlled suction...	04/02/1985
4499916	Vacuum check valve A vacuum check valve comprising a single umbrella valve responding to vacuum differences between the input and output of the check valve. The check valve directs the output line to feed a vacuum operated device with either the vacuum source or reference a...	02/19/1985
4480657	Vacuum line control valves A vacuum line control valve having a single vacuum input port and a pair of output ports to which vacuum is supplied alternately, each output port being vented to atmosphere when not at vacuum pressure. A reciprocating valve control member is carried by a...	11/06/1984
4456016	Inhalation valve An inhalation valve is provided for testing the breathing capacity of a person. The valve is constructed of two plastic moldings which snap together and trap a flexible elastomeric valve diaphragm between them. The valve is provided with a mouthpipe. Exha...	06/26/1984
4413644	Automatic vacuum bleed valve for use on paper making machines An automatic adjustable vacuum bleed valve particularly, but not exclusively, for use with a suction box of a paper making machine. The valve defines a first chamber connected to the suction box. A second chamber extends within the body of the valve and i...	11/08/1983
4376454	Valve A valve for connecting two flexible hoses of a milking machine to a milk line and a vacuum line, respectively, comprises a housing containing two opposite valve seats and a rotatable slide having sealing surfaces cooperating with said seats. The slide is ...	03/15/1983
4366831	Vacuum closed venting valve A venting valve comprising a body having first and second ports. A movable valve member having a venting passage is located in the body and is biassed to a first position where the venting passage provides communication between the first and second ports....	01/04/1983
4365608	Controlling engine exhaust gas recirculation and vacuum inverter Engine manifold vacuum is inverted by an in-line vacuum inverter which provides a power source for an EGR valve actuator for providing desired EGR flow in a predetermined range of engine power loading and EGR flow is cut off outside the range. The inventi...	12/28/1982
4241751	Vacuum transmitting valve Disclosed is an improvement in a vacuum transmitting valve for an exhaust gas purifying system on an automobile engine, of the type which has an inlet chamber and an outlet chamber divided by a partition which is provided with a vacuum transmitting orific...	12/30/1980
4230141	Pulsator valves A pulsator valve has a valve body comprising a base and a cap with a diaphragm edge-mounted therebetween. Internally, the base is divided into inner and outer chambers by an annular valve seat with which one surface of the diaphragm cooperates to form an ...	10/28/1980
4191090	Vacuum toggle Automatic temperature control system for vehicles commonly utilize vacuum pressure as a power source to perform various functions such as operating the mode damper which routes hot or cold air through either lower or upper outlets. The vacuum pressure is ...	03/04/1980
4166476	Vacuum cut-off valve A vacuum cut-off valve for cutting off vacuum communication between an inlet port and an outlet port when the inlet vacuum increases above a predetermined vacuum level so that the outlet vacuum is maintained at a constant predetermined vacuum level. When ...	09/04/1979
4161947	Divers exhaust valve The invention provides an exhaust valve comprising a valve body, an inlet duct in the valve body for receiving gas to be exhausted through the valve, an exhaust duct in the valve body for exhausting the said gas from the valve, and a valve member subject ...	07/24/1979
4033125	Air flow control means for automobile engine exhaust gas cleaning means In an automobile engine exhaust gas cleaning system including an exhaust gas reactor which is supplied with auxiliary air for effecting combustion of unburnt constituents such as CO and HC in the exhaust gas, an air flow control device is provided for con...	07/05/1977
4023588	Control device for milking machines The housing of a control device forms a chamber into which opens a milking machine conduit communicating alternately with a vacuum source and a pressure source, there being a separate connection between the chamber and the pressure source which is indepen...	05/17/1977
3982553	Vacuum reducer valve assembly A vacuum reducer valve assembly senses the engine induction passage vacuum and delivers a reduced vacuum signal to a vacuum motor which advances the ignition timing in proportion to the vacuum signal. The vacuum reducer valve assembly has a member which d...	09/28/1976
3982555	Vacuum relay valve A vacuum relay valve for isolating a vacuum operated dependent device from a contaminated vacuum signal source includes a check valve and an atmospheric bleed valve arranged such that a negative-going pressure change in the vacuum source causes the check ...	09/28/1976
3967849	Vacuum control system There is herein disclosed, in association with a high pressure air source and a vacuum cup, a vacuum forming device comprising a vacuum forming member movable between a vacuum forming position and a non-vacuum position by connection to and disconnection f...	07/06/1976
3930515	Pneumatic control system and valve construction therefor or the like A pneumatic control system having a source of pneumatic fluid and a pneumatically operated device to be operated by the source when interconnected thereto by a valve construction when the same is in one operating condition thereof. The valve construction ...	01/06/1976

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Class 137/103 - Vacuum or suction pulsator type (e.g., milking machine)