Edward T Bosman

US Patent:

52202240, Jun 15, 1993

Filed:

Sep 10, 1992

Appl. No.:

7/943364

Inventors:

Edward T. Bosman - Cheshire CT
Karla C. Pratt - Wolcott CT
Philip G. Atiyeh - Cheshire CT
John F. Rutledge - Plantsville CT

Assignee:

North American Philips Corporation - New York NY

International Classification:

H02K 3714

US Classification:

310 49R

Abstract:

A stepper motor of the permanent-magnet sheet-metal type is constructed of a number of modules, simplifying assembly. The modular parts include a stator having integrally-molded winding bobbins and pole pieces. A rotor mounted in the stator includes a barrier member which separates a plastic, threaded hub molded interiorly from a permanent magnet molded exteriorly. A shaft having a first threaded end rotatably engaged with the interior of the rotor hub has a rectangular central portion extending through a rectangular opening of the stator to convert rotary motion of the rotor to linear motion of the shaft. An opposite end of the shaft includes a molded head and a tubular shield extending from the head. This shield and a tubular portion of the stator molding define a labyrinthal passage which inhibits the passage of contaminants into the rotor. A housing of the motor and a rotatably attached flange include engagable portions to lock the flange at a desired angular position.

US Patent:

52472167, Sep 21, 1993

Filed:

Dec 30, 1991

Appl. No.:

7/817034

Inventors:

Edward T. Bosman - Cheshire CT
Karla C. Pratt - Wolcott CT
John F. Rutledge - Plantsville CT

Assignee:

North American Philips Corporation - New York NY

International Classification:

H02K 3700

US Classification:

310 49R

Abstract:

A stepper motor of the permanent-magnet sheet-metal type is constructed of a number of modules, simplifying assembly. The modular parts include a stator having integrally-molded winding bobbins and pole pieces. A rotor mounted in the stator includes a barrier member which separates a plastic, threaded hub molded interiorly from a permanent magnet molded exteriorly. A shaft having a first threaded end rotatably engaged with the interior of the rotor hub has a rectangular central portion extending through a rectangular opening of the stator to convert rotary motion of the rotor to linear motion of the shaft. An opposite end of the shaft includes a molded head and a tubular shield extending from the head. This shield and a tubular portion of the stator molding define a labyrinthal passage which inhibits the passage of contaminants into the rotor. A housing of the motor and a rotatably attached flange include engagable portions to lock the flange at a desired angular position.

US Patent:

52988228, Mar 29, 1994

Filed:

Sep 10, 1992

Appl. No.:

7/943363

Inventors:

Edward T. Bosman - Cheshire CT
Karla C. Pratt - Wolcott CT
Philip G. Atiyeh - Cheshire CT
John F. Rutledge - Plantsville CT

Assignee:

North American Philips Corporation - New York NY

International Classification:

H02K 3700

US Classification:

310 49R

Abstract:

A stepper motor of the permanent-magnet sheet-metal type is constructed of a number of modules, simplifying assembly. The modular parts include a stator having integrally-molded winding bobbins and pole pieces. A rotor mounted in the stator includes a barrier member which separates a plastic, threaded hub molded interiorly from a permanent magnet molded exteriorly. A shaft having a first threaded end rotatably engaged with the interior of the rotor hub has a rectangular central portion extending through a rectangular opening of the stator to convert rotary motion of the rotor to linear motion of the shaft. An opposite end of the shaft includes a molded head and a tubular shield extending from the head. This shield and a tubular portion of the stator molding define a labyrinthal passage which inhibits the passage of contaminants into the rotor. A housing of the motor and a rotatably attached flange include engagable portions to lock the flange at a desired angular position.

US Patent:

52548929, Oct 19, 1993

Filed:

Sep 10, 1992

Appl. No.:

7/943365

Inventors:

Edward T. Bosman - Cheshire CT
Karla C. Pratt - Wolcott CT
Philip G. Atiyeh - Cheshire CT
John F. Rutledge - Plantsville CT

Assignee:

North American Philips Corporation - New York NY

International Classification:

H02K 3714

US Classification:

310 49R

Abstract:

A stepper motor of the permanent-magnet sheet-metal type is constructed of a number of modules, simplifying assembly. The modular parts include a stator having integrally-molded winding bobbins and pole pieces. A rotor mounted in the stator includes a barrier member which separates a plastic, threaded hub molded interiorly from a permanent magnet molded exteriorly. A shaft having a first threaded end rotatably engaged with the interior of the rotor hub has a rectangular central portion extending through a rectangular opening of the stator to convert rotary motion of the rotor to linear motion of the shaft. An opposite end of the shaft includes a molded head and a tubular shield extending from the head. This shield and a tubular portion of the stator molding define a labyrinthal passage which inhibits the passage of contaminants into the rotor. A housing of the motor and a rotatably attached flange include engagable portions to lock the flange at a desired angular position.

US Patent:

53131258, May 17, 1994

Filed:

Sep 10, 1992

Appl. No.:

7/943362

Inventors:

Edward T. Bosman - Cheshire CT
Karla C. Pratt - Wolcott CT
Philip G. Atiyeh - Cheshire CT
John F. Rutledge - Plantsville CT

Assignee:

North American Philips Corporation - New York NY

International Classification:

H02K 3712

US Classification:

310 49R

Abstract:

A stepper motor of the permanent-magnet sheet-metal type is constructed of a number of modules, simplifying assembly. The modular parts include a stator having integrally-molded winding bobbins and pole pieces. A rotor mounted in the stator includes a barrier member which separates a plastic, threaded hub molded interiorly from a permanent magnet molded exteriorly. A shaft having a first threaded end rotatably engaged with the interior of the rotor hub has a rectangular central portion extending through a rectangular opening of the stator to convert rotary motion of the rotor to linear motion of the shaft. An opposite end of the shaft includes a molded head and a tubular shield extending from the head. This shield and a tubular portion of the stator molding define a labyrinthal passage which inhibits the passage of contaminants into the rotor. A housing of the motor and a rotatably attached flange include engagable portions to lock the flange at a desired angular position.