LEONHARD KATZ
Engineering in Winchester, MA
License number
Massachusetts 5377
Issued Date
Jan 1, 1949
Expiration Date
Jun 30, 2002
Type
Mechanical Engineer
Address
Address
Winchester, MA 01890
Personal information
See more information about LEONHARD KATZ at radaris.comName
Address
Phone
Winchester, MA
Professional information
See more information about LEONHARD KATZ at trustoria.com
Method Of And Motor Apparatus For Generating High Speeds
Method Of And Motor Apparatus For Generating High Speeds
US Patent:
3991353, Nov 9, 1976
Filed:
Dec 12, 1974
Appl. No.:
5/531923
Inventors:
Leonhard Katz - Winchester MA
Lawrence A. Ormord - West Lynn MA
Lawrence A. Ormord - West Lynn MA
Assignee:
Astro Dynamics, Inc. - Burlington MA
International Classification:
H02P 540
US Classification:
318227
Abstract:
This disclosure deals with a motor technique for enabling the running at speeds higher than 3600 r. p. m. , for 60 c. p. s. excitation, without the previously required commutators, brushes, gear boxes or frequency changers, through novel sequence switching of different selected portions of three-phase power, controlled to cause multiple magnetic pole energization at different times from different power phases in order to produce successive phase-displaced resultant waveforms that are substantially sinusoidal but of a multiple of 60 c. p. s.
Trans-Synchronous Motor Apparatus And Method
Trans-Synchronous Motor Apparatus And Method
US Patent:
4300077, Nov 10, 1981
Filed:
Dec 17, 1979
Appl. No.:
6/104184
Inventors:
Leonhard Katz - Winchester MA
Lawrence A. Ormord - Lynn MA
Lawrence A. Ormord - Lynn MA
Assignee:
Astro Dynamics, Inc. - Woburn MA
International Classification:
H02P 736, H02M 522
US Classification:
318812
Abstract:
This disclosure is concerned with a motor technique for generating speeds that are fractions of synchronous speeds, through novel time-staggered selected half-cycle energization of a plurality of magnetic poles by a controlled switching sequence, generating such a fractional motor speed that would otherwise have to be produced by a much larger number of magnetic poles.
Tomography Detector Temperature Equalization
Tomography Detector Temperature Equalization
US Patent:
5444752, Aug 22, 1995
Filed:
Feb 3, 1994
Appl. No.:
8/191426
Inventors:
John Dobbs - Hamilton MA
David Banks - Boxford MA
Leonhard Katz - Winchester MA
David Banks - Boxford MA
Leonhard Katz - Winchester MA
Assignee:
Analogic Corporation - Peabody MA
International Classification:
G01T 124
US Classification:
378 19
Abstract:
Temperature control of solid state detectors carried on the rotating gantry of computed tomography equipment is impractical for very detailed images. The temperatures of all of the detectors in the array can be equalized, however, by closely coupling them to a thermally massive object and isolating this combination from the environment. Significant thermal gradients are thereby removed from the array, and time is removed as a calibrating factor. The detectors are mounted on a common heat sink which provides the thermal mass, and the heat sink is covered with insulation and attached to the gantry by thermally isolating mounts, such as thin flexible stainless steel plates.