William H Terbrack

US Patent:

44659075, Aug 14, 1984

Filed:

Mar 2, 1982

Appl. No.:

6/354101

Inventors:

Ronald J. Minear - Huntington Beach CA
Harvey F. Brion - Mission Viejo CA
William H. Terbrack - Irvine CA

Assignee:

Hughes Aircraft Company - El Segundo CA

International Classification:

H04M 105
H04B 900

US Classification:

179156R

Abstract:

The combination of headset receivers (10) and storage system (50) therefor is used in an aircraft passenger entertainment system. Each receiver comprises a housing (12) including electronics for receiving infrared wireless transmission, which is converted into audible signals and supplied to a listener's ears through stems (14). Storage of the receivers is in a case (56, 58, 72) having grid plates (74, 76) and a slitted sanitizing pad (78), for receiving and storing the receivers, and for sanitizing their housings and stems.

US Patent:

45132550, Apr 23, 1985

Filed:

Jan 25, 1983

Appl. No.:

6/461099

Inventors:

William H. Terbrack - Irvine CA

Assignee:

Hughes Aircraft Company - Culver City CA

International Classification:

H03B 532
H03L 708

US Classification:

331 1A

Abstract:

A quartz crystal oscillator is controlled entirely by digital elements to phase lock with a reference square wavetrain by alternately switching the tuning circuit of the oscillator between first and second configurations. The ratio of the times during which the tuning circuit is in its respective configurations is a function of the relative phases of the oscillator output and the reference wavetrain and serves to determine the precise frequency of the oscillator so as to keep its output locked to the phase of the reference wavetrain.

US Patent:

44123558, Oct 25, 1983

Filed:

Oct 14, 1981

Appl. No.:

6/311367

Inventors:

William H. Terbrack - Irvine CA
Terry L. Hummel - Laguna Hills CA

Assignee:

Hughes Aircraft Company - El Segundo CA

International Classification:

H04B 900

US Classification:

455603

Abstract:

In the present invention, a novel magnetic circuit maximizes the electrical power generated upon manual actuation of a push-button switch while minimizing the required weight of the magnetic materials. In particular, the magnetic circuit of the power supply of the present invention includes the following magnetic materials: an unmagnetized core (comprising iron) around which a coil is wound, the coil being connected to supply power to the transmitter; a permanent magnet (comprising iron having a permanent magnetic moment) mounted on a vibrating reed, at least one pole of the permanent magnet facing at least one end of the core. Actuation of the push-button switch induces oscillatory motion of the reed and of the permanent magnet. An advantage of this novel magnetic circuit is that, in at least one embodiment, the oscillatory motion of the permanent magnet causes a complete flux reversal through the coil during each cycle of the mechanical oscillation of the reed, a significant advantage.

US Patent:

43565573, Oct 26, 1982

Filed:

Sep 27, 1979

Appl. No.:

6/079334

Inventors:

Leo A. Bell - Houston TX
William H. Terbrack - Irvine CA

Assignee:

Cooper Industries, Inc. - Houston TX

International Classification:

G01B 704
G06F 1546

US Classification:

364562

Abstract:

The invention is an electronic wire length measuring apparatus for accurately measuring and indicating the height of a traveling block above a fixed reference point in oil well drilling applications where a traveling block is hooked to a cable and pulley arrangement and to a winch drum, said winch drum being used to vary the height of the traveling block. The wire length measuring apparatus produces an output visual indication of the height of the traveling block independent of variations in drum size, wire size, number of layers on the drum, and the weight load on the traveling block, which causes a lower actual traveling block position due to stretching in the wire.

US Patent:

53988965, Mar 21, 1995

Filed:

Aug 6, 1993

Appl. No.:

8/103432

Inventors:

William H. Terbrack - Trabuco Canyon CA

International Classification:

B43L 1500

US Classification:

2481185

Abstract:

A keyboard, forearm, wrist and hand support device for use in conjunction with the keyboard of a video display terminal work station. The support device is adapted to reduce occurrences of repetitive strain injury by reducing stress on the user's shoulders, arms, wrists and hands. The support device comprises an elongate guide track and a pair of support assemblies which are adapted to support a user's forearms, wrists and hands thereon. Each of the support assemblies comprises a carriage member slidably engaged to the guide track and a linkage member pivotally connected to the carriage member. Pivotally connected to the linkage member is a support member which is sized and configured to support the user's forearm and wrist and the palmar surface of the user's hand. The pivotal connection of the carriage and support members to the linkage member and the slidable engagement of the carriage member to the guide track facilitates dynamic lateral and longitudinal movement of the support member and hence the user's hands relative the guide track.

US Patent:

46495703, Mar 10, 1987

Filed:

May 23, 1986

Appl. No.:

6/868880

Inventors:

William H. Terbrack - Irvine CA
Harvey F. Brion - Mission Viejo CA
Ronald J. Minear - Huntington Beach CA

Assignee:

Hughes Aircraft Company - Los Angeles CA

International Classification:

H04B 108

US Classification:

455344

Abstract:

A headset receiver comprises a cartridge (10) containing all electronic receiving functional parts, and a passive case (32) which serves a protective envelope for the cartridge while conducting sound from the cartridge through acoustical stems (52) to a listener's ears. The case, which contains no active components and is a low cost disposable item, is designed to serve as a sanitation envelope for the cartridge. It is to be separated from the cartridge at the end of an airplane flight, removed from the aircraft, and disposed of or, alternatively, sanitized and repackaged with a new battery and fresh earpads, and returned to another passenger. To secure the cartridge from theft or misplacement, a lanyard (26) tethers the cartridge to a passenger's seat (28).

US Patent:

58458840, Dec 8, 1998

Filed:

Jul 10, 1996

Appl. No.:

8/677701

Inventors:

William H. Terbrack - Trabuco Canyon CA

International Classification:

B68G 500

US Classification:

248118

Abstract:

An ergonomic support for portions of the forearm, wrist, palm and hand of a user of data entry devices. The support raises shaped hand cradles to a position whereby the user's fingers and thumbs may access all keys, balls, rollers and switches of the data entry devices while being supported thereby reducing loading on the upper extremities of the operator. The hand cradles are mounted on a tower fixed to a foot pad which are fabricated to slide over the support surface in front of the devices. An optional glide board may be placed under the devices if the support surface inhibits easy sliding of the foot pads. The front edge of the keyboard may be raised to accommodate the toe of the foot pads. A mouse support may be placed under a mouse device to raise the mouse to a height compatible with the keyboard.

US Patent:

50036246, Mar 26, 1991

Filed:

Mar 29, 1990

Appl. No.:

7/501689

Inventors:

William H. Terbrack - Trabuco Canyon CA
Martin G. Lee - Garden Grove CA

Assignee:

Hughes Aircraft Company - Los Angeles CA

International Classification:

G02F 100

US Classification:

455618

Abstract:

A low frequency pilot signal having predetermined positive and negative excursions is applied to an electrical modulation signal input (26) of a Mach-Zehnder electrooptic modulator (18) together with an electrical input signal. A bias voltage VB selected to bias the modulator (18) at a linear point (V. pi. /2) is also applied to the signal input (26). The optical output signal of the modulator (18) is sensed, and the magnitudes of the positive and negative excursions of the output signal which correspond to the positive and negative excursions of the pilot signal are compared with each other. If the modulator (18) is linearly biased as desired, the excursions will have the same relative relationship as the excursions of the pilot signal. If the modulator (18) has drifted away from the linear bias point (V. pi. /2), one excursion will have a larger magnitude relative to the other than in the pilot signal, indicating the direction of deviation.