Dong G Li

US Patent:

54252687, Jun 20, 1995

Filed:

Mar 3, 1994

Appl. No.:

8/206600

Inventors:

Dong X. Li - Placentia CA
David L. Yasumura - Long Beach CA
Brent F. Chaffee - Yorba Linda CA
G. Todd Ririe - Chino Hills CA

Assignee:

Union Oil Company of California - Los Angeles CA

International Classification:

G01N 3318
G01N 700

US Classification:

73 191

Abstract:

A continuous vapor sensor is assembled within a partially open protective enclosure which restricts (but does not exclude) the entry of liquid and means for excluding liquid from a portion of the enclosure, such as a non-wetting attachment material. The assembly allows the use of a continuous sensor which is adversely impacted by liquid contact in locations where the assembly may be immersed. The enclosure traps a sufficient amount of vapor to maintain a minimum vapor volume when the enclosure is submerged to a significant depth below a water level. The means for excluding controls the location of the minimum vapor volume to protect the sensor.

US Patent:

20170277202, Sep 28, 2017

Filed:

Jun 12, 2017

Appl. No.:

15/620649

Inventors:

Dong LI - Alhambra CA, US

International Classification:

G05D 1/08
B62J 17/08
B62K 25/04
B62K 11/02

Abstract:

A self-balancing enclosed motorcycle includes a platform base, a seat, a first wheel and a second wheel, a rear cabin, a door component and a gyroscope system. The gyroscope system includes a housing, a gyroscope sensor, a calculation device, an electrical coding device, a microprocessor, a servomotor, a vertical corrective rod movably extended from the servomotor, a first balancing assembly and a second balancing assembly. The first balancing assembly is mounted in the housing to engage with the vertical corrective rod. The second balancing assembly mounted in the housing at an opposite side of the first balancing assembly to engage with the vertical corrective rod. The vertical corrective rod is normally retained in a substantially vertical orientation with respect to the platform base.