Class 200/83J - Piston and diaphragm

Subclass of Class 200 - Electricity: circuit makers and breakers
No. of patents: 145
Last issue date: 03/16/2010

Number	Title	Issue Date
7679014	Pressure switch In a pressure switch with a housing in which a plunger element is located that is movable against a spring force of a first elastic element—contacts being located directly or indirectly on the plunger element, and the first elastic element being located on the sid...	03/16/2010
7414207	Non-locking switch for filter monitoring Commercially available filter-monitoring switches suffer from problems related to over sensitivity and reliability. Accordingly, the present inventors have devised, among other things, various embodiments of filter-monitoring switches and related components, subasse...	08/19/2008
7365277	Buffer assembly for a pressure sensitive switch A buffer assembly includes a housing adapted to sealingly connected to the pressure switch and defining therein a chamber and an airway defined in a bottom face of the housing to communicate with an interior of the housing so as to communicate with an inlet of the p...	04/29/2008
7351926	Rotation-proof enclosure for pressure switch housing A housing for a pressure switch is coupled to a pipeline. The housing has a tubular body with an explosion-proof enclosure attached to the body with a retainer sleeve inserted through an opening in the enclosure and threaded into the body to secure the enclosure to ...	04/01/2008
7348509	High pressure switch with isolated contacts A pressure switch employs electrical contacts isolated from pressure media. By employing a snap action blade in a snap over center configuration, it is possible to provide a hysteresis effect in which the switch actuates at one pressure and deactuates at a different...	03/25/2008
7309841	Manual reset switch cover assembly The present invention is concerned with cover assemblies for manually resetting pressure switches used on oil and gas pipelines. The cover assembly encloses a volume of space on the pressure switch that houses a reset switch which is activated by depressing a button...	12/18/2007
7309141	Air actuated decoration system and device The invention is a system that provides a means to using passing air to turn on an electronically powered device that is removably attached to an exterior portion of a vehicle as the vehicle travels betweens two locations. The invention is also embodied as a device ...	12/18/2007
7293524	Indicator device for indicating whether a no-back device is operable An indicator device for use in indicating whether or not a no-back device is operable, the indicator device comprising an indicator member 42 moveable between a first position and a second position, a biassing arrangement 56 being provided to urge the ...	11/13/2007
7272976	Pressure sensor A pressure gauge includes a diaphragm having a substantially rigid outer portion and a displaceable inner portion that displaces in response to a pressure difference between first and second sides of the diaphragm. The pressure gauge further includes a sensor locate...	09/25/2007
7256361	Pressure switch A pressure switch includes a body, a lower cap and an upper cap respectively mounted to two opposite ends of the body. A casing is airtightly sleeved on an outer periphery of each of the lower cap and the upper cap. There are two electrodes disposed in the body and ...	08/14/2007
7249519	Pressure gauge A retrofittable pressure gauge for a spray gun includes a pressure sensor, located in a pressure chamber, a power source and a display unit, all enclosed within a case, a passageway providing fluid communication between the pressure chamber and a pressurised interio...	07/31/2007
7191659	Sealed diaphragm pressure sensor A pressure sensor includes a pressure detecting chamber sectionally formed by a diaphragm for receiving measured pressure and a semiconductor chip having a diaphragm as a pressure-sensitive portion is equipped in the pressure detecting chamber. Electrically insulati...	03/20/2007
7182419	Out of ink signal mechanism for an inkjet printer An out of ink signal mechanism for an inkjet printer having at least one inkbag is disclosed. The signal mechanism includes a printed circuit board having a circuit associated with each inkbag, a contact spring and at least one lifter. The contact spring is biased t...	02/27/2007
7157995	Switching device An electromagnetic relay has an iron core having a protruding shaft and a magnetic pole portion. The protruding shaft is penetrated through a through hole provided on a metal case, and coil is wound around the protruding shaft. A voltage is applied to the coil for m...	01/02/2007
7157653	Magnetic latching switch A magnetic latching switch includes a housing having mounted therein a movable electrical control structure normally retained in a first position with a stationary electrical lug structure. The electrical control structure and the electrical lugs are held together b...	01/02/2007
7157654	Pressure switch with protection of the membrane against over-stretching A pressure switch for pressures up to a maximum permissible pressure (pmax), with a housing (1) and a membrane (2), whereby the membrane is fastened in the housing. The membrane has an exposed face on which a pressure can act, and it is defo...	01/02/2007
7112753	Pressure switch A water pressure switch employs two pivotable plates and springs to control the activation of the pump. The arrangement of the two pivotably plates, the springs and the activation device reduces the space required so that a small box can accommodate all the parts.	09/26/2006
7093451	Blowoff valve assembly with integrated pressure switch A blowoff valve assembly includes a diaphragm separating a refrigerant connection from an ambient port open to the atmosphere. The refrigerant connection is preferably connected to air conditioning system such that the diaphragm is in contact with refrigerant from t...	08/22/2006
7078637	Low air pressure switch for automobile A low air pressure switch for an automobile is formed in a water resistance structure in which a connector has an integral terminal and switch body so that a moisture input passage into the interior of a switch is fully disconnected. An air outlet for an air dischar...	07/18/2006
7071430	Adjustable pressure element, particularly for electric household appliances The sensor comprises a body in which a diaphragm is mounted so as to define a variable-volume chamber to which a fluid pressure is supplied in use, and a plurality of electrical switches connected to the diaphragm so that the diaphragm can bring about switching of t...	07/04/2006
6919521	Pressure sensor A pressure sensor integrated onto an electronic circuit substrate. The pressure sensor measures the effect of the ambient air pressure on a characteristic of the pressure sensor that can be translated into a variable pressure measurement. Another embodiment of the p...	07/19/2005
6740828	Arm and safety switch An arm and safety switch for ammunition rounds, such as a 120 mm multipurpose tank round, senses launch detonation pressure. The switch will not arm the projectile if the pressure detected is less than or equal to a first predetermined pressure characteristic of a m...	05/25/2004
6633010	Compact, sealed pressure switch A pressure switch 1 of this invention comprises a base electrode 2, a terminal 3, a disc 4 and a diaphragm 5. The base electrode 2 has a switching chamber 7 for inserting the contact part 3a of the terminal 3. The switching chamber 7 is sealed with an ins...	10/14/2003
6621021	Differential pressure switch and sensor A differential pressure switch having a piston which is guided in a piston housing in a cylinder bore against the force of a return element, the piston head having a pressure P1 applied to it, while a bore space around its tapered piston shaft ...	09/16/2003
6608266	Pressure switch with annular electrodes method of making same A pressure switch assembly has a cup-shaped piston slidable in a bore covered with an elastomeric diaphragm responsive to external pressure to move the piston. A pair of axially spaced ring electrodes have a flange on the piston disposed between the rings...	08/19/2003
6595051	Fluid level sensing and control system An improved pressure activated control apparatus is provided for sensing fluid pressure and triggering one or more switches in response to the fluid pressure, as desired. The apparatus is designed to be placed within a fluid of a reservoir. The apparatus ...	07/22/2003
6495777	Pressure switch A pressure switch. The switch includes a pressure sensor device adapted for receiving the input pressure and then moving the link rod due to the deformation caused by the input pressure. The switch includes a contact point fine-tuner having a first contac...	12/17/2002
6452122	Pressure sensing device An improved differential pressure switch has its supply pressure (a.k.a. the "high side") connected to the high pressure side of a filtration unit and its downstream (a.k.a. the "low side") connected to the low pressure port of a fluid filtration unit. As...	09/17/2002
6443005	Pressure activated control An improved pressure activated control apparatus is provided for sensing fluid pressure and triggering one or more switches in response to the fluid pressure, as desired. The apparatus includes a first resilient member, such as a pliable rolling diaphragm...	09/03/2002
6329619	Pressure switch A pressure switch comprises a switch lever 8 equipped with a switch contact and a working shaft contact portion 82, and a working shaft 6 driven by the pressure of a fluid so as to close or open said switch contact, wherein said contact portion 82 has a s...	12/11/2001
6064014	Pressure responsive electric switch assembly and method for making As assembly of normally open pressure responsive electric switches (10a-10e) is provided using a single lead frame (8) for forming respective discontinuous annuli (12) to serve as contact surfaces for pressure responsive discs (42) and a center contact (1...	05/16/2000
5932857	Pressure switch with biaxially oriented thermoplastic diaphragm A pressure responsive electric switch (10) is shown having an improved flexible diaphragm (28) to extend the useful life of the switch particularly when used with fluid media of a corrosive nature. The flexible diaphragm (28) comprises a base layer (28a) ...	08/03/1999
5917164	Pressure-sensitive switch with polyphenylene sulfide resin receiving member A pressure-sensitive switch typically used in an automobile engine room comprises: a housing having a passage communicating with a pressurized fluid path; a switch case fixed to the housing; a diaphragm contained in an interior space defined by the housin...	06/29/1999
5889247	Normally closed, pressure responsive electrical switch A normally closed, fluid pressure responsive electric switch (10) has an electrically conductive body (12) formed with an orifice (12a) leading to a pressure chamber (12c) which is separated from a switch chamber by a flexible member (14). An annular supp...	03/30/1999
5872345	Pressure switch A pressure switch includes a switch housing which has an accommodation bore extending inward from one end of the switch housing, and a slide bore extending between the accommodation bore and the other end of the switch housing. A piston is slidably dispos...	02/16/1999
5808255	Fluid pressure responsive electric switch A fluid pressure responsive electric switch (10) is shown having an elongated base (12) in which first and second terminals (34, 48) are mounted by dropping them into respective slots (26, 28). The terminals are provided with tabs (38, 52) to engage with ...	09/15/1998
5744771	Pressure switch with increased deadband A pressure switch has a housing with an interior bore extending from one end to the other. A rod slidable within the bore and operated by external fluid pressure extends between a piston at one end of the housing and a mechanically operated electrical swi...	04/28/1998
5728986	Block mounting of pressure switch cartridge A cartridge type pressure switch is formed with a cup-shaped contact flanged outwardly at its rim and slidably nested in an annular spacer. A flexible diaphragm has an integrally formed annular bead ring which is stretched over the spacer to secure the di...	03/17/1998
5710401	Volumetric pump/valve A volumetric pump for administering intravenous fluids to a patient comprises a housing having an elongate cavity therein with an open and a closed end. A resilient sheet of material having a centrally-located aperture covers the open end, and a pump shaf...	01/20/1998
5672049	Electromechanical device for the protection of a pump in waterworks of various types, in the absence of water The device comprises: a branch (5) from the outlet (M) of the pump to a cavity (7) partially delimited by a membrane (14); a moving element (16, 22, 24) in a casing (9); a spring (36) pushing said element (16, 22, 24) toward the membrane (14) and capable ...	09/30/1997

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Class 200/83J - Piston and diaphragm