George Levi Bowman

US Patent:

D2456974, Sep 6, 1977

Filed:

May 20, 1976

Appl. No.:

5/688433

Inventors:

Robert A. Skyer - Palatine IL
George E. Bowman - Country Club Hills IL

Assignee:

International Harvester Company

International Classification:

D1502

US Classification:

D15 30

US Patent:

52795560, Jan 18, 1994

Filed:

May 7, 1992

Appl. No.:

7/879357

Inventors:

Nobuaki Goi - Yamatokoriyama, JP
George A. Bowman - Vernon Hills IL
Joseph B. Matthews - Grayslake IL

Assignee:

Sharp Kabushiki Kaisha - Osaka
Baxter International Inc. - Deerfield IL

International Classification:

F04B 4900

US Classification:

604 67

Abstract:

A rotary encoder comprises a rotary plate having a plurality of primary slits defined in the rotary plate in a circular row coaxial with the axis of rotation of the rotary plate. The rotary plate also has at least one reference slit defined therein at a position radially of the circular row of the primary slits. A primary photoelectric detector including a source of light and a photo-sensor positioned one above the other with the circular row of the primary slits intervening therebetween is used to detect the passage of the primary slits therethrough while an auxiliary photoelectric detector including a source of light and a photo-sensor positioned one above the other with the path of travel of the reference slit intervening therebetween is used to detect the passage of the reference slit therethrough.

US Patent:

51051400, Apr 14, 1992

Filed:

Jan 11, 1990

Appl. No.:

7/463644

Inventors:

Joseph B. Matthews - Grayslake IL
George A. Bowman - Vernon Hills IL

Assignee:

Baxer International Inc. - Deerfield IL

International Classification:

H02P 800

US Classification:

318696

Abstract:

The present invention provides a drive signal for a peristaltic pump motor. A first circuit is provided which generates a first series of pulses at a given frequency. A second circuit is provided which generates a second series of pulses having a frequency higher than the frequency of the first series of pulses. A third circuit is provided which generates a third series of pulses having a frequency between the frequency of the first and second series of pulses. Finally, a circuit is provided which combines the three series of pulses into a drive signal. The drive signal length is determined by the frequency of the first series of pulses. The drive signal further is divided into two sections, an initial pulse stage determined by the frequency of the third series of pulses, and a modulated pulse stage being a series of pulses determined by the frequency of the second series of pulses.

US Patent:

6068612, May 30, 2000

Filed:

Jul 10, 1998

Appl. No.:

9/113765

Inventors:

George Bowman - Vernon Hills IL
Joseph Matthews - Grayslake IL
Kurt Eyster - Santa Barbara CA

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

A61M 100

US Classification:

604122

Abstract:

The present invention provides an apparatus for detecting excessive air in a liquid flow-through tube. The apparatus includes an ultrasonic transmitter for transmitting ultrasonic signals and an ultrasonic receiver for receiving ultrasonic signals. The ultrasonic transmitter and ultrasonic receiver are separated by the IV tube. The apparatus further provides circuit means for generating at least two transmitting signals to actuate the ultrasonic transmitter and circuit means for detecting received signals. Means are provided for determining whether the received signal is indicative of air or liquid in the IV tube. The apparatus further relies on logarithmic detection of air in fluids rather than linear detection which provides a larger safety factor in prediction of air embolus.

US Patent:

D2588234, Apr 7, 1981

Filed:

May 11, 1979

Appl. No.:

6/037972

Inventors:

Robert A. Skyer - Palatine IL
George E. Bowman - Country Club Hills IL

International Classification:

D1503

US Classification:

D15 30

US Patent:

D2703513, Aug 30, 1983

Filed:

Jul 29, 1981

Appl. No.:

6/287837

Inventors:

Gregg C. Montgomery - Hinsdale IL
George E. Bowman - Country Club Hills IL
Robert A. Skyer - Palatine IL

Assignee:

International Harvester Co. - Chicago IL

International Classification:

D1503

US Classification:

D15 31

US Patent:

42793203, Jul 21, 1981

Filed:

Jan 22, 1980

Appl. No.:

6/114433

Inventors:

Michael C. Brandl - Westmont IL
David T. Kataoka - Berwyn IL
George E. Bowman - Country Club Hills IL

Assignee:

International Harvester Company - Chicago IL

International Classification:

B62D 2510

US Classification:

180 69R

Abstract:

The improvement of a hood of a tractor that has a filler neck passing through a neck aperture in the top surface of the hood. The neck aperture is transversely offset from the tractor's centerline. The improvement includes a downwardly projecting trough in the hood's top surface. The bottom of the trough is a major depression that is connected at four brake lines to the top surface by inner, outer, fore and aft sides. The major depression incorporates a pair of run-off apertures, with each run off aperture being adjacent one of the fore or aft sides. The neck aperture is located in the inner side of the trough, while the outer side of the trough contains a grip aperture. The improvement also includes a seal which resiliently and sealably connects the filler neck and the inner side of the trough. The improvement further includes a downwardly projecting hand grip that is sealably secured to the outer side of the trough in the grip aperture. The hand grip base is a primary depression with fore and aft ends connected by a surface that is substantially parallel to the tractor's centerline.

US Patent:

50685864, Nov 26, 1991

Filed:

Jun 22, 1990

Appl. No.:

7/541953

Inventors:

Masafumi Kawahara - Nara, JP
George A. Bowman - Vernon Hills IL
Joseph B. Matthews - Grayslake IL

Assignee:

Sharp Kabushiki Kaisha - Osaka
Baxter International Inc. - Deerfield IL

International Classification:

H02P 800

US Classification:

318696

Abstract:

A stepping motor driving apparatus includes a stepping motor and a pulse output circuit for outputting drive pulses for driving the stepping motor. A pulse generator generates further pulses which not only have frequency higher than that of the drive pulses but are capable of a variable duty factor at the frequency of the further pulses. A gate circuit receives the drive pulses from the pulse output circuit and the further pulses from the pulse generator so as to output the further pulses of the pulse generator during excitation of the drive pulses such that the stepping motor is driven by the further pulses outputted from the gate circuit.