David W Stecker

US Patent:

57822794, Jul 21, 1998

Filed:

May 23, 1997

Appl. No.:

8/862568

Inventors:

David W. Stecker - Roselle IL

International Classification:

B27B 524
B25H 100

US Classification:

1442861

Abstract:

A portable saw table used to cross cut lumber and other wood items which includes foldable rail supports which are held in position by removable and discardable cross pieces and which on removal of the cross pieces can be folded to a small size for transport. Extension members telescope into the rail supports to increase the length of the table.

US Patent:

60654198, May 23, 2000

Filed:

May 28, 1998

Appl. No.:

9/086282

Inventors:

David W. Stecker - Roselle IL

International Classification:

B63C 1146

US Classification:

114315

Abstract:

The underwater dive vehicle disclosed has a selectively energizable propulsion unit for forcible driving the vehicle through the water and at least one resilient gas filled buoyancy element which is in open contact with the surrounding water when the vehicle is in the water. The volume of the gas in the buoyancy element provides sufficient displacement of the water to keep the vehicle afloat at the surface when unattended or to support a diver. When the vehicle is submerged water pressure will act directly upon and tend to compress the resilient buoyancy element and the gas contained therein. This reduces the volume of the gas within the buoyancy element and thus reduces buoyancy of that element. Sealed housings such as those surrounding parts of the propulsion unit are filled with a non-conductive and non-corrosive liquid to prevent distortion and subsequent leaking of the seals, and non-moveable electrical components are encased in waterproof epoxy.