Texas Instruments Corporation

Pietro DeFilippis

Amedeo Salvatore

Giuseppe Notaro

Ciro Calenda

Mario Biscione

Marios Biscione

A high reliability low cost connector has flat retainers blanked from an electrically conductive sheel metal and inserted into opening in an electrically insulating body. Each retainer has a post at one end extending from an opening at one side of the body and has a pair of integral wings spaced from each other in a plane at its opposite end disposed in the opening at the opposite side of the body. Spring clips are blanked and formed from an electrically conductive sheet metal spring material and are inserted into the body openings so loop portions of the clips fit between the pairs of retainer wings in each opening and are biased into resilient electrical engagement with the retainer wings. Each clip preferably has two pairs of juxtaposed spring leaves integral with the loop spaced at 90.degree. relative to each other around a common axis to grip a terminal inserted between the spring leaves. The loops are also formed with interruptions in each loop in a common location between two adjacent spring leads. The sheet metal retainers and clips are inserted into the body openings while suspended from support strips left during the blanking steps and are then separated from the support strips. In that way the retainers and clips have predetermined uniform orientations in the openings.

Method of making a connector

A motor protector having a thermostat metal element thermally coupled to an electrical motor in a refrigerator compressor motor system has a heater responsive to motor current thermally coupled to the thermostat metal element and has an improved component arrangement to provide locked rotor and ultimate trip protection for the motor without requiring calibration of the operating temperature for the protector after assembly or after incorporation in the motor system.

Protected refrigerator compressor motor systems and motor protectors

A high reliability low cost connector has flat retainers blanked from an electrically conductive sheet metal and inserted into opening in an electrically insulating body. Each retainer has a post at one end extending from an opening at one side of the body and has a pair of integral wings spaced from each other in a plane at its opposite end disposed in the opening at the opposite side of the body. Spring clips are blanked and formed from an electrically conductive sheet metal spring material and are inserted into the body openings so loop portions of the clips fit between the pairs of retainer wings in each opening and are biased into resilient electrical engagement with the retainer wings. Each clip preferably has two pairs of juxtaposed spring leaves integral with the loop spaced at 90.degree. relative to each other around a common axis to grip a terminal inserted between the spring leaves. The loops are also formed with interruptions in each loop in a common location between two adjacent spring leads. The sheet metal retainers and clips are inserted into the body openings while suspended from support strips left during the blanking steps and are then separated from the support strips. In that way the retainers and clips have predetermined uniform orientations in the openings.

Connector and method of making

An improved electromagnetic relay having a wafer of material with positive temperature coefficient of resistivity (PTC) mounted inside the relay combines a sturdy construction with low manufacturing costs adapting the relay for use as a starting relay for electric motors of compressors. For this purpose, the magnetic members of the relay are incorporated in the electrical relay circuit and are provided with attachments for plug-on connections of the relay to circuit pins of motor-compressor units.

Growing community of inventors

Aversa, Italy

Pietro DeFilippis