Gerald I Carlson

US Patent:

46805320, Jul 14, 1987

Filed:

Aug 1, 1985

Appl. No.:

6/761458

Inventors:

Abdallah M. Itani - Ballston Spa NY
Peter W. Dietz - Greenwich NY
Gerald J. Carlson - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

B03C 301

US Classification:

323240

Abstract:

A method and apparatus for protecting switching elements, and in particular, thyristor switching elements, which are used to supply pulses to a capacitive load, from damage resulting from false triggering signals, i. e. , triggering signals not accompanied by actual sparkover conditions in the load. Since termination of normal pulse cycles in such pulser systems are accomplished by a return to high forward voltage across the switching elements, false triggers generated closely prior to such termination and within the forward recovery time of a thyristor switching element present a danger that the termination of a normal cycle will result in a weak turn-on and consequent damage of the switching element. By insuring that all such potentially false triggers have a duration which extends past termination of the pulse cycle damage to the switching element resulting from such false triggers is inhibited.

US Patent:

44037163, Sep 13, 1983

Filed:

May 26, 1982

Appl. No.:

6/382129

Inventors:

Gerald I. Carlson - Barrington RI
Norman J. Cook - Warwick RI

International Classification:

B60R 906

US Classification:

224 4208

Abstract:

A support rack for vehicles, i. e. , automobiles, and the like which is particularly adapted for alternate support and storage of bicycles in one position and for the storage of general materials such as trunks, trash barrels, camping equipment gear, and the like in an alternate position. The storage rack includes a frame which in the bicycle supporting position is positioned in an upright attitude and in the general material supporting position is in a generally horizontal position vis-a-vis the rear or front end of the vehicle on which it is supported. The rack is preferably positioned in an area of low air turbulence at the rear end of the vehicle.

US Patent:

54064384, Apr 11, 1995

Filed:

May 24, 1994

Appl. No.:

8/248470

Inventors:

Radhakrishnan Ranjan - Hickory NC
William E. Lazenby - Statesville NC
Robert E. Koch - Pittsfield MA
Gerald J. Carlson - Scotia NY
John G. Leach - Hickory NC
Ronald E. Bennet - Hickory NC

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01H 3776

US Classification:

361104

Abstract:

An apparatus for triggering chemical augmented electrical fuses includes a light source which emits a light signal in the form of visible or infrared light energy upon receiving a signal from a control system, trigger signal source or other fuses. The light signal is coupled to a light detector by an optical coupling device such as a fiber optic cable. Upon receipt of the light signal, the light detector generates a signal which causes the application of electrical energy to exothermic material in a fuse, thereby detonating the material and causing interruption of current through the triggered fuse.

US Patent:

40683060, Jan 10, 1978

Filed:

Jul 12, 1976

Appl. No.:

5/704415

Inventors:

Arthur C. M. Chen - Schenectady NY
William D. Barber - Ballston Lake NY
Walter H. Berninger - Schenectady NY
Gerald J. Carlson - Scotia NY
Norman C. Gittinger - Schenectady NY
James R. Whitten - Scotia NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

H03K 1302
G01N 2300

US Classification:

364414

Abstract:

A tomographic x-ray imaging system comprises a large plurality of parallel data acquisition channels which integrate and digitize signals from an array of x-ray detectors. Calibration pulses are injected into each data acquisition channel to permit measurement of drift in electronic gain and dc offset parameters. Separate x-ray detectors continuously monitor the intensity of the x-ray source. The measured values for channel gains, dc offsets, and source intensity are fed to a digital computer where they are automatically combined with x-ray transmission data to compensate for system drift and extend the period between calibration measurements.

US Patent:

46805338, Jul 14, 1987

Filed:

Aug 1, 1985

Appl. No.:

6/761459

Inventors:

Abdallah M. Itani - Ballston Spa NY
Gerald J. Carlson - Scotia NY
Peter W. Dietz - Greenwich NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

B03C 301

US Classification:

323240

Abstract:

A method and apparatus for protecting switching elements, and in particular, thyristor switching elements, which are used to supply pulses to a capacitive load, from damage resulting from sparkover occurring in that load are described. The load voltage pulse is characterized by a period of rising voltage followed by a period of falling voltage, these two periods being separated by a transition period of maximum vulnerability of the switching element to damage from sparkover. Specifically, during this period of maximum vulnerability of the switching elments to damage, a gate trigger pulse is applied to the elements to cause them to resume a conductive state, independent of the occurrence of an abnormal sparkover condition.