Vinh Hai Hoang

US Patent:

20030235923, Dec 25, 2003

Filed:

Jun 21, 2002

Appl. No.:

10/177820

Inventors:

Franklin Jurik - Pleasanton CA, US
Manoj Sharma - Milpitas CA, US
Carol Chang - San Francisco CA, US
Vinh Hoang - San Jose CA, US

International Classification:

G01N021/77

US Classification:

436/169000, 436/164000, 422/055000, 422/056000, 435/014000

Abstract:

A method for the acceptance testing of a set of multiple colored workpieces (e.g., paired color pads of a calibrated color chart or paired membranes of visual blood glucose test strip). The method includes first measuring a plurality of color parameters (e.g., L*a*b* color parameters) associated with the set of multiple colored workpieces, followed by conversion of the plurality of color parameters into a single response parameter. Next, the single response parameter for the set is compared to a predetermined single response parameter specification for the set and acceptance of the set of multiple colored workpieces determined based on the comparison. The method can be easily employed in conjunction with multiple (e.g., paired) membrane test strips used to measure, for example, glucose, cholesterol, proteins, ketones, phenylalanine or enzymes in blood, urine, saliva or other biological fluid and/or sample fluid characteristics such as pH and alkalinity.

US Patent:

20170043405, Feb 16, 2017

Filed:

Oct 28, 2016

Appl. No.:

15/337601

Inventors:

- Rancho Cordova CA, US
Vinh HOANG - Rancho Cordova CA, US
Justin TRIPP - Rancho Cordova CA, US
Ashkan FEROZEPURWALLA - Rancho Cordova CA, US
Scott STANTON - Rancho Cordova CA, US

International Classification:

B23B 5/16

Abstract:

A rotating machining device for machining a work piece includes a support housing adapted for mounting on the work piece and a headstock rotatably mounted on the support housing about an axis. The headstock including an internal gear. A drive module is arranged to drive rotation of the headstock about the axis and at least one gear connection is formed between the internal gear and the drive module. The at least one gear connection is positioned radially inside of an outer diameter of the support housing to protect an operator from a pinch point associated with the at least one gear connection.

US Patent:

20150360293, Dec 17, 2015

Filed:

Aug 26, 2015

Appl. No.:

14/836644

Inventors:

- Rancho Cordova CA, US
Vinh HOANG - Rancho Cordova CA, US
Justin TRIPP - Rancho Cordova CA, US
Ashkan FEROZEPURWALLA - Rancho Cordova CA, US

International Classification:

B23B 3/26
B23B 5/14
B23B 5/16

Abstract:

A rotating machining device for machining a work piece includes a body having a support housing and a headstock rotatable relative to the support housing. A tool feed system including a tool module is attached to the headstock and a tripper pin assembly is attached to the support housing. The tripper pin assembly is arranged to collide with the tool feed system at a collision point for advancement of the tool feed system relative to the work piece. The radial position of the collision point is adjustable relative to the tool module such that the collision point is repositionable independent of the tool module.

US Patent:

20150184691, Jul 2, 2015

Filed:

Mar 13, 2015

Appl. No.:

14/657774

Inventors:

- Rancho Cordova CA, US
Vinh HOANG - Rancho Cordova CA, US

International Classification:

F16C 19/50
F16C 33/60
B23P 15/00

Abstract:

A bearing assembly includes a first race having an arcuate configuration and a first set of bearing elements. The first set of bearing elements is arranged to dynamically contact the first race and recirculate within the bearing assembly in a first direction. A second race has an arcuate configuration and is removably secured to the first race. A second set of bearing elements is arranged to dynamically contact the second race and recirculate within the bearing assembly in a second direction opposite the first direction.

US Patent:

20150107425, Apr 23, 2015

Filed:

Oct 16, 2014

Appl. No.:

14/516159

Inventors:

- Rancho Cordova CA, US
Vinh HOANG - Rancho Cordova CA, US
Justin TRIPP - Rancho Cordova CA, US
Ashkan FEROZEPURWALLA - Rancho Cordova CA, US

International Classification:

B23B 3/26
B23B 25/00
B23B 5/16

US Classification:

82113, 82117

Abstract:

A rotating machining device for machining a work piece includes a support housing adapted to be mounted on the work piece and a headstock rotatably mounted on the support housing. At least one tool module is mounted to the headstock and includes a tool feed system having a tool holder and a feed mechanism operatively connected to the tool holder. A tripper pin assembly is mounted on the support housing and arranged to collide with the feed mechanism for advancement of the tool holder relative to the work piece. The feed mechanism collides with the tripper pin assembly at a collision point radially positioned inside of an outer diameter of the headstock.

US Patent:

20150101467, Apr 16, 2015

Filed:

Oct 9, 2014

Appl. No.:

14/510613

Inventors:

- Rancho Cordova CA, US
Vinh HOANG - Rancho Cordova CA, US

International Classification:

B23Q 1/70
B23B 5/08

US Classification:

82147

Abstract:

A rotating machining device includes a segmented support housing arranged to be mounted on a work piece and a segmented headstock mounted on the support housing and rotatable relative to the support housing about an axis. The rotating machining device also includes at least one bearing assembly disposed between the headstock and the support housing. The at least one bearing assembly includes a first race having a first set of bearing elements arranged to dynamically contact a first portion of the headstock and reciprocate within the bearing assembly in a first direction. The at least one bearing assembly also includes a second race having a second set of bearing elements arranged to dynamically contact a second portion of the headstock and recirculate within the bearing assembly in a second direction opposite the first direction so as to promote distribution of a load applied to the bearing assembly.