Craig A Williams

US Patent:

D615849, May 18, 2010

Filed:

Aug 18, 2009

Appl. No.:

29/342091

Inventors:

Craig B. Williams - Concord GA, US

Assignee:

American Step Company, Inc. - Griffin GA

International Classification:

0805

US Classification:

D 8370

US Patent:

D627210, Nov 16, 2010

Filed:

Apr 15, 2010

Appl. No.:

29/359825

Inventors:

Craig B. Williams - Concord GA, US

Assignee:

American Step Company, Inc. - Concord GA

International Classification:

0805

US Classification:

D 8370

US Patent:

D645731, Sep 27, 2011

Filed:

May 12, 2010

Appl. No.:

29/361562

Inventors:

Craig B. Williams - Concord GA, US

Assignee:

American Step Company, Inc. - Griffin GA

International Classification:

0805

US Classification:

D 8370

US Patent:

43657800, Dec 28, 1982

Filed:

Mar 23, 1981

Appl. No.:

6/245873

Inventors:

Craig B. Williams - Fayetteville GA

Assignee:

M. A. Industries, Inc. - Peachtree City GA

International Classification:

E02B 0000

US Classification:

249 11

Abstract:

The present device is especially useful for positioning on forms prior to the pouring of concrete for removal therefrom to create holes in the concrete to receive inserts therein such as in making holes in concrete for steps to be used in a manhole. A tapered steel shaft of any selected length has a collar fixed near one end thereof with an elongated handle passing transversely therethrough. The collar has slanted cam edges on each end providing a cam surface which is approximately 12. degree. from a line perpendicular to the axis. A second collar identical to the first is welded to a form, such as a steel concrete form used in pouring concrete for manholes. The second collar also has slanted cam edges providing a cam surface corresponding to the slanted cam edges on the first collar and there is a hole passing through the steel pin and through the second collar to receive a removable latch pin therein. The steel pin is inserted through the second collar and fixed in place until after the concrete is poured and has cured sufficiently at which time the latch pin is disengaged and the handle is turned to rotate a cam edge of the first collar against a cam edge of the second collar thereby providing a cam action which readily disengages the pin from the concrete and leaves a hole.

US Patent:

52772721, Jan 11, 1994

Filed:

Mar 2, 1993

Appl. No.:

8/025127

Inventors:

Craig B. Williams - Fayetteville GA
Joseph H. Montgomery - Brooks GA

Assignee:

M.A. Industries, Inc. - GA

International Classification:

E06C 904

US Classification:

182 93

Abstract:

A non-metallic ladder for use in a manhole in which permanent manhole steps have been installed and spaced relation from the top of the manhole to a position above the bottom and there being a pair of spaced side members on said ladder connected transversely by spaced steps to form corners at the top in which there are spaces to fit over a respective side members on the step. The spaces may be in the shape of a rectangular cross-section or other configuration. The ladder is "hung" from the step to resist dislodgment therefrom. There may be provided a wall bumper member at the bottom of the ladder to engage the inside wall of the manhole.