George A Lang

US Patent:

44144733, Nov 8, 1983

Filed:

Feb 23, 1981

Appl. No.:

6/236804

Inventors:

David M. Hoffman - New Berlin WI
Dennis Pritzkow - New Berlin WI
George R. Lang - New Berlin WI

Assignee:

General Electric Company - Milwaukee WI

International Classification:

G01T 120

US Classification:

250366

Abstract:

A resilient locking and sealing arrangement for a multi-channel reflective cavity scintillation detector useful in a CT scanner. The absorption coefficient of the detector window is minimized in order to enhance detector efficiency, by forming such window of layers of woven graphite fiber bonded together with epoxy. The detector window includes resilient sealing means positioned to engage the leading edge of unit cell elements assembled to form a detector array. Resilient lock means force the plate into a reference position and into contact with the resilient sealing means thereby to accurately locate the plate in the array, and also to provide an effective light seal.

US Patent:

44058632, Sep 20, 1983

Filed:

Oct 19, 1981

Appl. No.:

6/312557

Inventors:

Dennis H. Pritzkow - New Berlin WI
Jack H. Zabel - Milwaukee WI
George R. Lang - New Berlin WI

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01T 118
H01J 188

US Classification:

250385

Abstract:

Improved end blocks for the electrode array of a multicell radiation detector support the array and isolate it from the interior walls of an enclosed ionization chamber. A plunger extends from the rear wall of each end block and is biased by a spring within the end block to bear against the rear wall of the detector chamber, biasing the electrode array forwardly against front spacers to position the front edges of the electrodes in equidistantly spaced relation to a x-ray transmissive window formed in the front wall of the detector housing. The bias exerted by the springs is adjustable. A tool is inserted into each end block during assembly of the detector to retract the plungers while the array is being positioned within the opened ionization chamber. The invention greatly reduces noise in the detector caused by microphonics, thus improving the integrity of the detected signal and permitting shorter scanning times and other advantages.

US Patent:

40625184, Dec 13, 1977

Filed:

Nov 10, 1976

Appl. No.:

5/740569

Inventors:

Paul M. Stivender - Waukesha WI
George R. Lang - New Berlin WI
Raymond C. Mentink - New Berlin WI

Assignee:

General Electric Company - Schenectady NY

International Classification:

G21C 1100

US Classification:

250519

Abstract:

On a diagnostic x-ray table, a first group of x-ray shielding panels are supported for rotation on a carrier and another group of panels are supported on a lever that is pivotally connected to the carrier. The lever may be aligned with the carrier to present the combined width of all panels across the front of a combination spot film and fluoroscopic device. Means responsive to pivoting the lever along the side of the apparatus rotate the first group of panels to substantial parallelism with second group to present the panels along the side of the apparatus when the spot film and fluoroscope device is angulated to put the patient being examined in an erect posture.