Sensata Technologies, Inc.

Texas Instruments Corporation

Sensata Technologies Massachusetts, Inc.

Russell P Brodeur

Richard J Lisauskas

Kevin J Dropps

Keith Richard Washburn

Douglas B Strott

Adrian W Lim

William R LeBeau

Robert J Andrews, Jr

Robert J Andrews Jr

An oil filled pressure sensor is provided. The sensor includes a drift-stabilized pressure sensing element mounted to and electrically isolated from a header body, the pressure sensing element immersed in an oil filled cavity and temperature stabilized for sensing pressure in the cavity without substantial signal drift. A method of fabrication is provided.

Case isolated oil filled MEMS pressure sensor

A low cost motor starter is shown having a PTC resistorserially connected to a triacand a bias resistor in turn adapted to be connected to the start winding of a single phase motor. A reed relayhaving a sense coilserially connected to the main winding in one preferred embodiment and in parallel with the main and start windings in a second preferred embodiment, is magnetically coupled to reed contacts. Reed contactis connected to a location intermediate the PTC resistorand the triacwhile reed contactis connected to the gate of the triac. A gate signal phase shifting network comprising capacitor C-Ris also connected to reed contactand the gate.

Low current electric motor starter

An enclosed motor protector has a housing formed by a base () and a cover () received on the base and enclosing a recess () formed in the base. A first terminal () extends through an opening in the housing and mounts a stationary contact () within the recess. An elongated movable contact arm () is cantilever mounted at one end in the recess and mounts a second movable contact () on a free end of the arm which is adapted to move into and out of engagement with the stationary contact. A heater () is mounted in the recess in heat transfer relation with a snap acting thermostatic disc () disposed adjacent to the movable contact arm so that upon reaching a preselected temperature the disc will snap from one dished configuration to an opposite dished configuration with its motion transferred to the movable contact arm to move the contacts out of engagement. The cover is formed with a first multiple wall barrier () in the form of a triangular body when seen in a lateral cross section closing a first terminal receiving opening and a second multiple wall barrier () closing a second terminal receiving opening to interrupt the travel of arcs and the inlet of explosive gas to the enclosure. These features also diminish air supply in the enclosure to thereby weaken any combustion.

Motor overload protector

A combination electricals package ( ) particularly for use with fractional horsepower compressor motors for various appliances has a first recess formed in the package for receipt of a motor starter ( ) and a second recess formed in the package for receipt of a run capacitor ( ) potted therein and having capacitor leads ( ) connected to a capacitor lead connecting portion ( ) of a connector ( ) also having a motor pin connecting portion ( ) and a motor starter connecting portion ( ). The capacitor lead connecting portion in a preferred embodiment includes spaced apart parallel extending rails to accommodate capacitor lead misalignment. In a modified embodiment the capacitor lead connecting portion includes quick connect receptacles for conventional capacitor quick connect terminals. The connectors are formed so that the same connector can be used in two opposite orientations for left and right connectors. The motor starter is a PTC element ( ) which is thermally isolated from capacitor ( ) to help ensure that the capacitor remains below its maximum use temperature. In one embodiment the package has a first housing member mounting the motor starter ( ) and motor protector ( ) and a second housing member mounting the run capacitor ( ) encapsulated therein. In another embodiment the motor protector, motor starter and the run capacitor are all mounted in the same housing member which is provided with an enclosing lid ( ).

Electricals package integrating run capacitor, motor protector and motor starter

Growing community of inventors

Franklin, MA, United States of America

Russell P Brodeur