Joachim E Wolf

US Patent:

46642471, May 12, 1987

Filed:

Apr 30, 1984

Appl. No.:

6/605041

Inventors:

Joachim E. Wolf - Monroeville PA
Charles W. Maiden - Brentwood PA
Andrew P. Kruper - Penn Hills PA
Frederick O. Johnson - Monroeville PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

B65G 4300

US Classification:

198323

Abstract:

A transportation apparatus having improved brake control. The actual speed of the transportation apparatus is compared with a reference speed signal, and when the actual speed exceeds the reference speed a brake is applied to slow the transportation apparatus. Rather than simply applying the full torque of the brake abruptly, the present invention discloses an apparatus for pulse duration modulating the control signal for controlling the brake. The brake responds to the average of the pulse duration modulated control signal such that braking torque is applied gradually and essentially linearly. The device can also be used in an acceleration situation to provide gradual acceleration of the transportation apparatus.

US Patent:

41829824, Jan 8, 1980

Filed:

Jul 11, 1978

Appl. No.:

5/923620

Inventors:

Joachim E. Wolf - Monroeville PA
Philip F. Locke - Monroeville PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01R 120
G01R 1900

US Classification:

324127

Abstract:

A current sensing transducer includes a conductive current divider including a branch path for conducting a fractional current proportional to a current to be sensed and being applied through the divider. A compensated transformer includes a primary circuit responsive to the fractional current and two secondary windings. An amplifier circuit controls the current input to one secondary winding in response to the output of the other secondary winding so that the flux of the primary circuit is virtually compensated in the core and the secondary winding current is a measure of the current to be sensed.

US Patent:

42400597, Dec 16, 1980

Filed:

Apr 5, 1979

Appl. No.:

6/027432

Inventors:

Joachim E. Wolf - Monroeville PA
Philip F. Locke - Monroeville PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

H01C 700

US Classification:

338 49

Abstract:

A current divider having two major current paths and a shunting current path is disclosed. The shunting current path connects the two major current paths at a point on each major current path such that the shunting current path connects points which have slightly different voltage potentials. This slight difference in voltage potentials causes a current to flow in the shunting current path. The current that flows in the shunting current path is a predetermined fraction of the total current and is primarily dependent on the difference in voltage potentials which is a function of the location of the shunting current path. The current that flows in the shunting current path is substantially independent of the ratio of the cross-sectional areas and/or the inverse lengths of the current paths in that for a given cross-sectional area of the shunting current path various values for the current split off may be obtained by varying the location of the shunting current path.

US Patent:

44829450, Nov 13, 1984

Filed:

Nov 29, 1982

Appl. No.:

6/445124

Inventors:

Joachim E. Wolf - Monroeville PA
Paul H. Watson - Ardara PA
Raymond J. Radus - Monroeville PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

H02M 7155

US Classification:

363129

Abstract:

A coil for a 12-pulse transformer-rectifier apparatus assembled on a three-leg magnetic core comprising a half primary winding sandwiched between two half secondary windings of substantially the same height as the half primary winding. A pair of coils associated with one leg of a three-leg magnetic core in a 12-pulse transformer-rectifier, are oriented in opposition to one another, and have all their terminal conductors extending parallel to one another with transversal connectors in closely-related parallel planes.

Author:

Joachim Wolf

ISBN #:

3428058879

Author:

Joachim Wolf

ISBN #:

3452187489

Author:

Joachim Wolf

ISBN #:

3789063487

Author:

Joachim Wolf

ISBN #:

3406471447

Author:

Joachim Wolf

ISBN #:

3811450859

Author:

Joachim Wolf

ISBN #:

3817661495