Yuan L Cheng

US Patent:

D453251, Jan 29, 2002

Filed:

Nov 15, 2000

Appl. No.:

29/132757

Inventors:

Donald Gringer - New York NY
Yuan Fang Cheng - Forest Hills NY

Assignee:

Allway Tools, Inc. - Bronx NY

International Classification:

0805

US Classification:

D32 48

US Patent:

6487778, Dec 3, 2002

Filed:

Mar 15, 2001

Appl. No.:

09/809676

Inventors:

Donald Gringer - New York NY
Yuan Fang Cheng - Forest Hills NY

Assignee:

Allway Tools, Inc. - Bronx NY

International Classification:

B26B 108

US Classification:

30162, 30335, 30 2

Abstract:

An improved automatically retractable cutting device includes (a) a housing having a guide slot, with one or more notches disposed in the guide slot, (b) a return spring within the housing, and (c) a blade carrier disposed within the housing and biased by the return spring. The blade carrier includes a thumb piece extending through the guide slot, the thumb piece having a protuberance adapted to at least partially frictionally engage the notch during movement of the thumb piece along the guide slot to enable the thumb piece to be held in position adjacent to the notch with reduced force. Each notch may include a forward direction ramping surface, whereby reduced force is required to prevent further blade extension, and/or a reverse direction ramping surface, whereby reduced force is required to prevent blade retraction. Each ramping surface is preferably angled at less than ninety degrees. The housing may be formed by attachable halves, each of which includes notches, whereby the notches are substantially symmetrically aligned when the housing is assembled.

US Patent:

6530098, Mar 11, 2003

Filed:

Aug 13, 2001

Appl. No.:

09/928794

Inventors:

Donald Gringer - New York NY
Yuan Fang Cheng - Forest Hills NY

Assignee:

Allway Tools, Inc. - Bronx NY

International Classification:

B44C 708

US Classification:

7105, 7165

Abstract:

A taping knife includes a continuous shaft having a blade on a first end thereof, and a hammer on a second end thereof. A handle surrounds the shaft with the blade extending from one end thereof, and the hammer extending from the other end thereof. The handle preferably is constructed with a molded inner core and a soft molded rubber overlay. The hammer includes a hammering surface generally perpendicular to a central axis of the handle. The inner core is preferably constructed of a molded thermoplastic, and the overlay is preferably constructed of an injection molded rubber. The handle may include a bit storage slot for receiving and storing a screwdriver bit. The overlay may include a plurality of flexible fingers adjacent to the bit storage slot for securing a screwdriver bit in the slot. The hammer may include a sleeve for receiving a screwdriver bit with a working portion of the bit extending from the sleeve.

US Patent:

D479374, Sep 2, 2003

Filed:

Oct 30, 2002

Appl. No.:

29/170006

Inventors:

Donald Gringer - New York NY
Yuan Fang Cheng - Forest Hills NY

Assignee:

Allway Tools, Inc. - Bronx NY

International Classification:

0805

US Classification:

D32 48, D32 49

US Patent:

D479375, Sep 2, 2003

Filed:

Oct 30, 2002

Appl. No.:

29/170009

Inventors:

Donald Gringer - New York NY
Yuan Fang Cheng - Forest Hills NY

Assignee:

Allway Tools, Inc. - Bronx NY

International Classification:

0805

US Classification:

D32 48, D32 49

US Patent:

6832438, Dec 21, 2004

Filed:

Jun 5, 2001

Appl. No.:

09/874665

Inventors:

Donald Gringer - New York NY
Yuan Fang Cheng - Forest Hills NY

Assignee:

Allway Tools, Inc. - Bronx NY

International Classification:

B26B 108

US Classification:

30162, 30335

Abstract:

A cutting device includes (i) a housing having first and second separable portions, the first portion having a locking aperture, the second portion having an attachment aperture, and (ii) a locking apparatus for removably locking the first and second portions of the housing. The locking apparatus includes an attachment portion for being fixedly attached in the attachment aperture, and a locking arm adapted to be releasably locked into the locking aperture. The attachment aperture and locking aperture are correspondingly positioned so that the locking arm becomes aligned with the locking aperture when the first and second portions of the housing are aligned for assembly. The housing may be constructed of metal, and the locking apparatus constructed of plastic. The locking apparatus may also include a return spring and blade carrier integrally molded therewith. In one embodiment, the locking arm includes i) an upstanding portion oriented generally perpendicular to an axis of the housing, ii) an actuating arm extending laterally from a free end of the upstanding portion, so that downward force on the actuating arm causes a bending of the upstanding portion, and iii) a locking lip toward the free end of the upstanding portion extending laterally in a direction opposite to the direction of bending of the upstanding portion.

US Patent:

6971788, Dec 6, 2005

Filed:

Feb 27, 2004

Appl. No.:

10/789726

Inventors:

Donald Gringer - New York NY, US
Yuan Fang Cheng - Forest Hills NY, US
Howard Soled - Paramus NJ, US

Assignee:

Site-b Company - Bellingham WA

International Classification:

B01F005/12
B01F007/32

US Classification:

366265, 36632594

Abstract:

A mixing device includes vanes arranged so that the outer edges of the vanes define a frusto-conical surface in order to facilitate improved circulation of the liquid being mixed. Each vane is preferably curved, either lengthwise, widthwise, or both. In one embodiment, the outer edges of the vanes are tapered outward to form the frusto-conical surface. In an alternative embodiment, the inner and outer edges of the vanes are aligned with each other, and the vanes are tilted relative to a central axis to form the frusto-conical surface. The vanes may extend between upper and lower rims having the same or different diameters. Turbines extend between the vanes and shaft for rotating the mixing device. The turbines are arranged to avoid inhibiting entry of liquids through the top and bottom of the mixing device. Feet extend downward from the bottom edge of the mixing device to facilitate mixing of liquids on the bottom of the container.

US Patent:

D516263, Feb 28, 2006

Filed:

May 27, 2003

Appl. No.:

29/186553

Inventors:

Donald Gringer - New York NY, US
Yuan Fang Cheng - Forest Hills NY, US
Howard Soled - Paramus NJ, US

Assignee:

Allway Tools, Inc. - Bronx NY

International Classification:

0401

US Classification:

D32 52, D32 46, D32 48