Tri-tech Corporation

Tritex Corporation

Keith Kowalski

Albert Palmero

Nino Maini

In a preferred embodiment, a linear actuator including: a rotary electric motor; a shaft () extending into a rotor () of the rotary electric motor and extendable into a body extension () of the valve; the shaft () having an externally threaded portion () extending into the rotor () and in engagement with a complimentary threaded internal surface of the rotor (); and the shaft () having an externally splined portion () extendable into the body extension () of the valve and engageable with a complementary splined internal surface () of the extension () of the valve.

Linear valve actuator

In a preferred embodiment, a threaded rotor for a linear actuator, including: a generally cylindrical, metallic shell/insert ( ); and a generally cylindrical threaded thermoplastic member ( ) disposed in a wall of the generally cylindrical shell/insert, the threaded thermoplastic member having threads formed on an inner surface thereof and engagable with complementary threads formed on an outer surface of a shaft to be inserted in the generally cylindrical shell/insert.

Injection molded threaded rotor and manufacture method

Linear actuator shaft

In a preferred embodiment, a linear/rotary electromagnetic device, including: a housing (,); first and second stators (,and,) disposed in the housing, first and second rotors (,and,) disposed in the housing and magnetically interacting, respectively, with the first and second stators; the first stator and the first rotor comprising a rotary motor; the second stator and the second rotor comprising an electromagnetic brake; a shaft (,) extending through a portion of the housing and axially through the first and second rotors, the shaft having a threaded portion (,) extending through a complementary threaded portion (,) of one of the first and second rotors; whereby; when the electromagnetic brake is locked and the rotary motor is rotated in a first direction, the shaft will move axially in a first direction; when the electromagnetic brake is locked and the rotary motor is rotated in the second direction, the shaft will move axially in a second direction; and when the electromagnetic brake is released and the rotary motor is rotated, the shaft will rotate with the rotary motor.

Growing community of inventors

Bethlehem, CT, United States of America

Keith Kowalski