1
Thomas M Kowalczyk: Axial door operator. The Stanley Works, Pillsbury Winthrop, November 19, 2002: US06481160 (34 worldwide citation)

The present application discloses an axial operator that is configured for use with a door assembly. The axial operator comprises a rotatable operator output member that rotates about an operator axis, the operator output member being constructed and arranged to be operatively connected within the d ...


2
Thomas M Kowalczyk, Brian D Hass: Automatic door assembly and door operator therefor. The Stanley Works, Pillsbury Winthrop, January 8, 2002: US06336294 (33 worldwide citation)

The present application discloses automatic door assemblies and swing operators therefor. One aspect of the disclosure provides a swing door operator that has spring return breakout and from motor driven opening. Another aspect of the disclosure provides a swing door operator that is non-handed with ...


3
Robert A St John, Thomas M Kowalczyk, Quan H Nguyen: Retrofit power door assembly. The Stanley Works, Pillsbury Winthrop, April 29, 2003: US06553717 (31 worldwide citation)

A retrofit power door assembly for installation on a manual door assembly. One aspect is related to a retrofit power door assembly having an axial operator. Another aspect relates to a retrofit power door assembly having a clutch with a manually engageable release member.


4
Thomas M Kowalczyk: Power door kit. The Stanley Works, Pillsbury Winthrop, July 8, 2003: US06588153 (28 worldwide citation)

The present application discloses a door kit for installation across an opening formed through the wall of a building. The door kit has a power-operated door latch and a power-operator door operator.


5
Thomas M Kowalczyk, Brian D Hass: Automatic door assembly and door operator therefor. The Stanley Works, Pillsbury Winthrop, March 11, 2003: US06530178 (24 worldwide citation)

The present invention relates to automatic door assemblies and swing operators therefor. One aspect of the invention provides a swing door operator that has an opening in the housing thereof for easy access to the operator motor. Another aspect of the invention provides a method for servicing a door ...


6
Thomas M Kowalczyk, Brian D Hass: Automatic door assembly and door operator therefor. The Stanley Works, Pillsbury Winthrop, September 7, 2004: US06786006 (24 worldwide citation)

The present invention relates to automatic door assemblies and swing operators therefor. One aspect of the invention provides a swing door operator that has an opening in the housing thereof for easy access to the operator motor. Another aspect of the invention provides a method for servicing a door ...


7
Thomas M McHugh, David W Barrett, Edward E Ahigian, Jerome F Jaminet, Thomas He, Richard E Peruggi, Thomas M Kowalczyk, Richard E Kulak: Velocity regulated, open current loop, variable voltage, variable frequency, linear induction motor drive for an elevator car door. Otis Elevator Company, April 23, 1996: US05509504 (12 worldwide citation)

An elevator car door is moved by a variable voltage, variable frequency linear induction motor which is driven open current loop to achieve a desired velocity profile indicated by an incremental linear encoder, with washed out proportional and integral gain. A magnetizing current insufficient to ove ...


8
Zbigniew Piech, Jerome F Jaminet, Thomas M Kowalczyk, Edward E Ahigian, Richard E Kulak, Thomas M McHugh, Thomas He, Richard E Peruggi, David W Barrett: Elevator door drive using dual secondary linear induction motor. Otis Elevator Company, April 7, 1998: US05736693 (11 worldwide citation)

A linear induction motor utilizes a double-sided primary and a dual secondary to directly drive an elevator car door open and closed. The invention has the advantage of being compact: all magnetic-attractive loads are confined to a primary mount bracket, and all thrust loads are carried directly by ...


9
Richard E Peruggi, Thomas M McHugh, Edward E Ahigian, Jerome F Jaminet, Thomas He, Thomas M Kowalczyk, Richard E Kulak, David W Barrett: Maintaining open loop current drive to linear induction motor. Otis Elevator Company, April 2, 1996: US05503248 (9 worldwide citation)

An elevator car door is moved by a variable voltage, variable frequency linear induction motor which is driven open current loop to achieve a desired velocity profile indicated by an incremental linear encoder, with washed out proportional and integral gain. A magnetizing current insufficient to ove ...


10
Jerome F Jaminet, Zbigniew Piech, Frank Guliuzza Jr, Thomas M McHugh, Edward E Ahigian, Thomas He, Richard E Peruggi, Thomas M Kowalczyk, Richard E Kulak, David W Barrett: Linear induction motor door drive assembly for elevators. Otis Elevator Company, March 18, 1997: US05612518 (8 worldwide citation)

The door or doors of an elevator are driven through their opening and closing cycles by one or more linear induction motor (LIM) assemblies in which the primary winding component of the LIM assembly is secured to the elevator cab structure and the LIM secondary component is secured to the cab door. ...