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| Number | Title | Issue Date |
| 7855345 | Differential pressure switch The invention relates to a field adjustable pressure switch that incorporates a manually adjustable differential to set the pressure level for the trip point for the pressure switch used in conjunction with a submersible sump pump system requiring trip levels corres... | 12/21/2010 |
| 7414208 | Ultra low pressure switch adjustment system An ultra low pressure switch adjustment system for efficiently differentiating between varying triggering pressures. The ultra low pressure switch adjustment system generally includes a housing including a first aperture and a second aperture, wherein said housing i... | 08/19/2008 |
| 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 |
| 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 |
| 7075270 | Charger contact The present invention provides a solution to the needs described above through an inventive charger contact. The conductive contact includes a housing with an outer cylindrical surface and a hollow inner cylindrical core with a longitudinal axis. An actuator is disp... | 07/11/2006 |
| 7047813 | Sensor slip fit apparatus and method A sensor apparatus and method are disclosed herein. A base is generally located proximate to a cover. A sensor element (e.g., quartz, silicon, ceramic, and the like) can be located on the base, such that the cover and the base form a clearance between the cover and ... | 05/23/2006 |
| 6931934 | Sensor top hat cover apparatus and method A sensor apparatus and method are disclosed herein, including a sensor element located on a base and a cover located proximate to the base. The cover generally includes a sensor diaphragm and a dimple that can form a part of the cover. A flanged area or flanged port... | 08/23/2005 |
| 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 |
| 6346681 | Pressure switch A pressure switch having a pressure responsive diaphragm with a backing plate for operating a snap-acting switch. The switch has a cantilevered contact blade spring with an adjustment screw providing a reaction support at the free end. The middle portion ... | 02/12/2002 |
| 6040536 | Pressure responsive switch and method of making same A low-cost, easy to manufacture and maintain pressure responsive switch. The switch includes a pressure responsive diaphragm made from latex rubber that is mounted in a housing base. An annular groove in the housing base communicates with an annular shoul... | 03/21/2000 |
| 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 |
| 5554834 | Pressure switch 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... | 09/10/1996 |
| 5495079 | Pressure switch calibration A pressure switch has a housing with a mounting bracket and a flexible diaphragm defining a wall of the pressure sensing cavity in the housing. Movement of the diaphragm operates an electric switch. The diaphragm is spring biased and an adjustment arm is ... | 02/27/1996 |
| 5467523 | Method for assembling and calibrating a condition-responsive electric switch mechanism A method for assembling a condition-responsive electric switch mechanism having a snap-acting bistable spring switch element. The switch mechanism is assembled substantially in its entirety except for the capillary tube. The switch mechanism is then calib... | 11/21/1995 |
| 5310970 | Pressure operated switch construction and method of making the same A pressure operated switch construction and method of making the same are provided, the pressure operated switch construction comprising a housing having an external surface and carrying an electrical switch unit and a diaphragm assembly therein, the hous... | 05/10/1994 |
| 5304759 | Direct mount pressure control with a field adjustable trip point and reset point A pressure control for use in applications such as refrigeration, air conditioning and ice generating machinery includes a highly accurate snap acting switch, field adjustable trip points and reset points and a reference scale. The trip point is adjusted ... | 04/19/1994 |
| 5300741 | Pressure responsive control device A pressure sensitive control device having a housing made up of a plurality of housing members, a diaphragm, a bistable snap-disc, a switch and an actuator. The snap-disc moves from one configuration to another upon application of pressure over a predeter... | 04/05/1994 |
| 5252792 | Subassembly for a pressure switch A pressure switch assembly has a preassembled spring capsule assembled onto a deck structure with a snap switch thereon to form a subassembly which is snap-locked into the cup-shaped housing. A rotary cam drum is provided in the housing with an external s... | 10/12/1993 |
| 5198631 | Pressure responsive control device A pressure sensitive control device having a housing made up of a plurality of housing members, a diaphragm, a bistable snap-disc, a switch and an actuator. The snap-disc moves from one configuration to another upon application of pressure over a predeter... | 03/30/1993 |
| 5189269 | Fluid pressure switch having a Belleville washer A resilient diaphragm operated pressure switch has a Belleville spring washer with a dished spring disc nested in the center and supported on the inner periphery of the washer resisting movement of the diaphragm. An actuator member is spring biased agains... | 02/23/1993 |
| 5187338 | Fluid pressure operated switch and contact assembly A pressure operated switch construction and method of making the same are provided, the pressure operated switch construction comprising a self-contained subassembly comprising a switchblade structure having a generally coplanar flat body and having a ter... | 02/16/1993 |
| 5173679 | Thermostatically controlled switch A housing (10), (54) defines a well which holds a diaphragm assembly (12). The diaphragm assembly has a stud portion (14) that extends through an aperture in the housing and is biased into the housing by a spring (16). The stud portion defines a channel (... | 12/22/1992 |
| 5136129 | Pressure operated switch construction and method of making A pressure operated switch construction and method of making the same are provided, the pressure operated switch construction comprising a housing having an external surface and carrying an electrical switch unit and a diaphragm assembly therein, the hous... | 08/04/1992 |
| 5130502 | Vacuum-controlled switch means responsive to engine load A vehicle switch means includes an electric switch operatively closed or opened as driven by a central spindle controlled by a vacuum controller communicated with an inlet manifold of a car engine, whereby when the car is subject to a heavy load, the weak... | 07/14/1992 |
| 5130503 | Pressure wave switch having improved contact structure and pressure equilization An improved pressure switch of the pulse or pressure wave sensitive type includes a switch housing with an internal diaphragm chamber. A relief vent with a fixed orifice disk is provided in the diaphragm chamber. A diaphragm is mounted in the diaphragm ch... | 07/14/1992 |
| 5124516 | Pressure driving cut-off type Manometer A manometer device having an adjusting head, an adjusting screw attached to the adjusting head, and an electrically conducting plate. Electric wires are connected to the adjusting screw and the conducting plate; and to a control for a fluid driver. With t... | 06/23/1992 |
| 5120915 | Pressure-actuated pump control switch A pressure switch according to the invention combines a pressure chamber with diaphragm, plunger, spring-loaded switch mechanism and electrical contacts in a single compact assembly. According to one aspect of the invention, the terminal board of the pump... | 06/09/1992 |
| 5068503 | High-pressure sensor for fluid conditions and method and apparatus using same A sensor or regulator capable of operating at high absolute pressures and for measurement of pressure, especially pressure differential, or liquid level, is disclosed and has a member which moves in response to pressure differential and being coupled dire... | 11/26/1991 |
| 5066836 | Gas damped deceleration switch A gas damped deceleration switch is calibratable to enable the switch to perform in a desired manner in response to deceleration pulses of various magnitudes and durations. A vacuum which is generated upon initial movement of a mass away from a rest posit... | 11/19/1991 |
| 5061832 | Field settable differential pressure switch assembly for low fluid pressure applications A differential pressure switch assembly for low pressure applications permitting accurate "in field" set pointing of same, comprising a capsulized instrument that includes housing high and low pressure sections defining in assembled relation a pressure ca... | 10/29/1991 |
| 5006678 | Pressure switch with deadband adjustment A wire wand is inserted into a pressure sensor perpendicular to the sensor's operating axis. The wire wand is fixed and adjustable at one end and driven at the other end by the sensor. The arrangement provides for deadband adjustment of a pressure switch.... | 04/09/1991 |
| 5004873 | Plural set point pressure responsive switching apparatus utilizing a single pressure sensing driver element An actuator having a spring biased button abutting a first electric switch operator button and a flange spaced from an operator button of a second electric switch is driven by a pressure sensing bellows against a Belleville snap spring, the actuator movin... | 04/02/1991 |
| 4990728 | Pressure switch and sub-assembly therefor A pressure switch assembly has a preassembled spring capsule assembled onto a deck structure with a snap switch thereon to form a subassembly which is snap-locked into the cup-shaped housing. A rotary cam drum is provided in the housing with an external s... | 02/05/1991 |
| 4965422 | Pressure driving cut-off type manometer A manometer device comprising a pointer to be fixed on a scale, a screw to be used to fix the pointer, and a sliding carriage cooperates with the screw; a pair of contacts are bolted on the lower surface of the sliding carriage. The two contacts can be us... | 10/23/1990 |
| 4933517 | Pressure switch with reduced contact wear An integral housing and body case contain a diaphragm having one side exposed to an external signal pressure and another side exposed to a chamber in the integral housing and body case so that the diaphragm is able to flex in response to a pressure differ... | 06/12/1990 |
| 4914264 | Control device having a self-supporting switch unit therein A control device, switch unit therefor and methods of making the same are provided, the electrical switch unit comprising a switch having a movable actuator, a lever pivotally carried by the switch unit and having one end adapted to be operatively interco... | 04/03/1990 |
| 4900883 | Fluid-operated compound switch In a preferred embodiment, a fluid-operated switch continuously and selectively adjustable over both a pressure range and a vacuum range. The switch includes a diaphragm enclosed in a housing, a first side of the diaphragm communicating with the fluid. On... | 02/13/1990 |
| 4892985 | Vacuum responsive multicontact switch A multicontact vacuum responsive switch includes a housing divided into first and second chambers by a diaphragm. The first chamber is connected to a vacuum source while the second chamber communicates with atmospheric pressure, so that the diaphragm is m... | 01/09/1990 |
| 4882459 | Pressure sensitive switch having rugged construction and accurate trip pressure settings A pressure sensitive switch has means for producing linear motion in response to pressure, means for springably resisting the linear motion, means for operating a switch after a predetermined linear motion, and a lifter pin having a projection on a first ... | 11/21/1989 |
| 4868356 | Easily serviced fluid pressure operated switch Disconnection of a fluid conduit from a fluid fitting 38 and electrical conduit from apertures 28 in a fluid pressure sensing switch when servicing is required is avoided in a construction wherein a switch module 12 is secured to a base 10 mounting a flui... | 09/19/1989 |
