Jing Lu

US Patent:

6787951, Sep 7, 2004

Filed:

Oct 1, 2001

Appl. No.:

09/966102

Inventors:

Boris A. Maslov - Reston VA
Alexander V. Pyntikov - Ashburn VA
Jing Lu - Herndon VA

Assignee:

Wavecrest Laboratories, LLC - Dulles VA

International Classification:

H02K 1100

US Classification:

310 67R, 310216, 310218, 310259

Abstract:

A rotary electric motor is formed within a cylindrical rotor housing structure that surrounds an annular stator ring. The permanent magnet rotor is configured in an annular ring coaxial with, and outside of, the stator. The stator ring contains a plurality of wound core segments that are ferromagnetically isolated from each other. The core segments are secured to a rigid skeletal structure that is centrally fixed to a stationary shaft. The stator support structure is formed of spine members that extend radially away from the center. U-shaped plates at the outer ends of the spine members engage adjacent pair of stator segments. Within the inner periphery of the stator ring, space is provided within which motor control circuitry and battery power supply may be incorporated.

US Patent:

7094163, Aug 22, 2006

Filed:

Oct 11, 2004

Appl. No.:

10/962778

Inventors:

Lay Lu - San Marino CA, US
Alex Lu - San Marino CA, US
Jing Lu - San Marino CA, US

International Classification:

A63B 57/00

US Classification:

473396

Abstract:

An improved adjustable golf tee comprises a tubular housing, an inner member slideably retained within the housing, and a removable retaining plug inserted into the housing. The tubular housing has an upper end, and a lower end fixed to a base. The lower end of the housing has an opening therein that is suitably generally rectangular in cross section and is beveled outwardly on opposed sides. The inner member has an upper end for supporting a golf ball, a body and a lower portion slideably retained at respective desired positions within the tubular housing. The lower portion of the inner member has two flexible legs that are extendable through the lower opening of the housing. Once the inner member is slid into the desired position, relative to the housing, the legs are extended outwardly along the beveled sides of the lower opening. The removable plug is inserted between the flexible legs of the inner member and wedged into the external lower opening, to fix the flexible legs against the lower end of the housing, to retain the inner member at the desired position.