John R Duncan

US Patent:

7445019, Nov 4, 2008

Filed:

May 15, 2007

Appl. No.:

11/749117

Inventors:

Arthur J. Brenes - Castro Valley CA, US
Yoshi Takayama - Reno NV, US
John Duncan - Reno NV, US

Assignee:

High Vacuum Apparatus Mfg., Inc. - Reno NV

International Classification:

F16K 31/122

US Classification:

13731529, 251 62, 251187, 251193, 251329

Abstract:

A gate valve including a valve housing defining a valve chamber having an opening therethrough along a flow path, a gate support supported within the valve housing between a closed position in the flow path, an open position outside of the flow path, and a service position extending out of the valve housing, and a dual actuator assembly having a service piston assembly having a service piston reciprocable within the valve housing, and an inner piston assembly having an inner piston reciprocable within the service piston assembly. The gate support is configured to reciprocate with the inner piston between the closed and open positions, and with the service piston between the closed and the service positions. A method of using the gate valve is also disclosed.

US Patent:

D594828, Jun 23, 2009

Filed:

Nov 25, 2008

Appl. No.:

29/328529

Inventors:

David Dozoretz - Los Angeles CA, US
Tim Wilcox - Burbank CA, US
Ryan Church - Redondo Beach CA, US
John Duncan - San Anselmo CA, US

Assignee:

Zillion TV Corporation - Sunnyvale CA

International Classification:

1403

US Classification:

D14125

US Patent:

D595267, Jun 30, 2009

Filed:

Oct 31, 2008

Appl. No.:

29/327169

Inventors:

David Dozoretz - Los Angeles CA, US
Tim Wilcox - Burbank CA, US
Ryan Church - Redondo Beach CA, US
John Duncan - San Anselmo CA, US

Assignee:

ZillionTV Corp. - Sunnyvale CA

International Classification:

1403

US Classification:

D14218

US Patent:

43108849, Jan 12, 1982

Filed:

May 9, 1979

Appl. No.:

6/037541

Inventors:

F. Alexander Roberts - Brea CA
William V. Stiles - Anaheim CA
Robert C. Cosbey - Anaheim CA
John P. Duncan - Santa Ana CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

G06F 1550

US Classification:

364578

Abstract:

In accordance with the invention, satellite navigation, receiver system of an exploration system for exploring for hydrocarbons in earth formations can be tested for fieldworthiness using a portable microcomputer-controlled satellite navigation simulator. From encoded inputs of local latitude, longitude, Greenwich mean time and antenna height, both array data parameters and real-time control signals are generated for simulating signals of an orbiting TRANSIT navigation satellite vis-a-vis the satellite navigation receiver system. To such system the received signals are indistinguishable from conventional TRANSIT satellite navigation signals. Result: by merely cross-checking simulator "turn-key" encoded data with the final computed fix, a technologist (who need not be a programming expert) can determine the fieldworthiness of the satellite navigation receiver system.

US Patent:

63321262, Dec 18, 2001

Filed:

Aug 1, 1996

Appl. No.:

8/690765

Inventors:

Roger L. Peirce - Los Altos CA
Bruce C. Rhoads - Foster City CA
John Duncan - Malverne NY
Scott J. Loftesness - Menlo Park CA
Kurt W. Johnson - Tempe AZ
Mary K. Dobbs - San Francisco CA
Dan Mayes - Hanover Park IL

Assignee:

First Data Corporation - Palo Alto CA

International Classification:

G06F 1760

US Classification:

705 14

Abstract:

A system and method for operating a computer based targeted payment system discount program. Consumer information from consumer payment system institutions is used to match qualified consumers to targeted merchant discount offers. Offers are automatically prioritized based on their expected value to consumers and consumers receive the highest priority offers for which they qualify. The default prioritization can be altered or overridden by the consumer's payment systems institution. Discounts are automatically applied during the processing of the qualifying purchase without the need for coupons or additional actions by either the merchant or consumer.

US Patent:

20190217189, Jul 18, 2019

Filed:

Jan 16, 2019

Appl. No.:

16/249485

Inventors:

- San Rafael CA, US
DOUGLAS GRIFFIN - Mill Valley CA, US
JOHN DUNCAN - San Anselmo CA, US
CHARLES BUECHE - San Francisco CA, US

International Classification:

A63F 13/25
G06F 3/01
G06T 7/73
A63F 13/285
A63F 13/80
A63F 13/30

Abstract:

A virtual reality (VR) system is provided that mixes real-world tactile stimulation with audiovisual stimulation provided through VR headgear. The VR system uses three sets of components. The first set comprises mobile objects that are tracked using motion tracking LEDs. The second set comprises stationary objects that are tracked using wires connected to an I/O controller to a game server. The third set comprises objects that are not tracked at all, but which are depicted with a thematic rendering in the VR world. A grid is set up that provides discrete locations for setting up both stationary and mobile components. A VR game server serves constructs of a VR world having thematically-embellished virtual objects that appear to be located in positions and orientations that match the positions and orientations of the components of the first, second, and third sets.

US Patent:

20190111333, Apr 18, 2019

Filed:

Jan 17, 2018

Appl. No.:

15/873523

Inventors:

- San Rafael CA, US
JOHN DUNCAN - San Anselmo CA, US
DOUGLAS GRIFFIN - Mill Valley CA, US
RICHARD SCHULZE - Sausalito CA, US

International Classification:

A63F 13/217
G06T 19/00
A63F 13/216
A63J 1/02
G06F 3/01
G02B 27/01

Abstract:

A virtual reality (VR) experience augmentation method includes: generating VR representations, each preprogrammed to simulate a virtual environment with virtually represented objects; associating stage kits with one or more of the representations, each kit having a modular stage and stage accessories, the modular stage marked to aid assembly; and building one of the kits, by: assembling the accessories to the stage according to the one of the kits by using coordinates identified by stage markings; and configuring a motion tracking system to track a VR participant's movements and movements of one of more of the stage accessories by communicating identity, location and/or orientation information to a VR simulation engine. Locations and orientations of the objects within the virtual environment correspond to locations and orientations of the stage accessories that are arranged according to the one of the kits. Each of the VR representations uses tracking information generated by the motion tracking system to present imagery of VR objects as the VR participant moves about corresponding stage accessories.

US Patent:

20190111334, Apr 18, 2019

Filed:

Jan 17, 2018

Appl. No.:

15/873553

Inventors:

- San Rafael CA, US
John Duncan - San Anselmo CA, US
Douglas Griffin - Mill Valley CA, US
Richard Schulze - Sausalito CA, US

International Classification:

A63F 13/217
A63J 1/02
G06T 19/00
A63F 13/285
G06F 3/01
G02B 27/01

Abstract:

A virtual reality (VR) attraction method includes implementing a kit corresponding to plans associated with VR representations. The kit includes fixed accessories, moveable accessories, a platform having a pattern of markings, and sections. The platform has mounts to affix the fixed stage accessories to the platform. The pattern identifies coordinates corresponding to a location of the mounts. The sections interconnect according to the pattern to form the platform. The platform is configurable according to stage plans. The method also includes: configuring a motion tracking system to register identity, location, and/or orientation of the fixed accessories and to track identity, location, and/or orientation of the moveable accessories and a VR participant; and via a VR simulation engine, receiving the identity, location, and/or orientation of the fixed accessories and the identity, location, and/or orientation of the moveable accessories; and generating the VR representations to simulate a virtual environment for the VR participant.