Ashfaq A Khan

US Patent:

7080459, Jul 25, 2006

Filed:

Mar 14, 2005

Appl. No.:

10/906931

Inventors:

Ashfaq A. Khan - Baton Rouge LA, US

International Classification:

B43L 11/045
B43L 9/04

US Classification:

33 2703, 33 305

Abstract:

The Thread Ruler and Multi-Function Drafting Instrument is a single instrument designed to draw circles, ellipses and parallel lines, and which includes features that allow the instrument to function as protractor, a ruler and a drawing compass. The instrument has a slide ruler that holds a marking device and that has a stem with a thread attached. The thread is further attached to the main ruler body at an outer end of the protractor so that ellipses can be drawn. The instrument may be used on any flat marking surface including: paper, drafting table, chalkboard and dry erased board. The instrument may be adapted to be used in portable manner so that it can be placed in shirt pocket.

US Patent:

20030154608, Aug 21, 2003

Filed:

Feb 15, 2002

Appl. No.:

10/077706

Inventors:

Ashfaq Khan - Torrance CA, US

International Classification:

B43L009/04

US Classification:

033/027030

Abstract:

A drafting instrument is disclosed that functions as a protractor, compass and ruler. The instrument is ideally suited for flat surfaces used for marking including: paper, dry erase board, chalkboard and drafting table. The instrument accommodates pencils, pens, chalks and markers and facilitates the drawings of arcs, circles and parallel lines. The instrument has a built-in protractor for measuring and drawing angles and multiple rulers for measuring distance and drawing straight lines. The preferred embodiment of the instrument is two-piece with an arm shaped main ruler and a single slide-ruler that freely slides in and out of the main-ruler. A place ring with thumbscrew is attached to the slide-ruler to hold a writing tool such as pencil, pen, chalk or marker.

US Patent:

20080184649, Aug 7, 2008

Filed:

Oct 18, 2006

Appl. No.:

11/164921

Inventors:

Ashfaq A. Khan - Baton Rouge LA, US

International Classification:

E04C 1/00

US Classification:

525926

Abstract:

An Interlocking Stackable Modular Building Block plastic molded container is disclosed that is ideally suited for making barrier walls, slabs and emergency living quarters. The referred embodiment of the Block is a hollow container with extrusion tongue on the one end and insertion groove on the other end. The Blocks can be placed adjacent to each other in interlocking position by inserting the tongue of the first Block in to the groove of the adjacent Block. Blocks have narrow ledge on the top and wider extension on the bottom. The wider bottom fits snugly on the top narrow ledge when Blocks are placed on top of each other and are held tight with screws. Walls and slabs can be made out of Blocks when they are placed in adjacent interlocked position and stacked top and bottom position. Such walls and slabs are ideally suited for providing winterized insulated housing to people in remote areas and areas that are hit with natural calamities such as earthquakes and floods. The walls are also suitable for erecting barriers alongside of freeways to reduce traffic noise. The Blocks are lightweight and inexpensive as they are manufactured with plastic molded material.

Author:

Ashfaq Muhammad Khan

ISBN #:

8170501369