William B Forrest

US Patent:

D2866897, Nov 11, 1986

Filed:

Nov 29, 1984

Appl. No.:

6/676259

Inventors:

William E. Forrest - Denver CO

Assignee:

Advanced Evacuation Systems - Denver CO

US Classification:

D29 1

US Patent:

D2842297, Jun 17, 1986

Filed:

Apr 27, 1984

Appl. No.:

6/604634

Inventors:

William E. Forrest - Denver CO

Assignee:

Forrest Mountaineering, Ltd. - Denver CO

US Classification:

D 2380

US Patent:

54696437, Nov 28, 1995

Filed:

Oct 22, 1993

Appl. No.:

8/141853

Inventors:

William E. Forrest - Denver CO

Assignee:

Mountain Safety Research - Seattle WA

International Classification:

A43B 504
A63C 1300

US Classification:

36122

Abstract:

A snowshoe (10) which provides improved sideslip protection, forward tracking guidance and overall stability is provided. The snowshoe (10) includes a convex flotation plate (12), side bars (14 and 16), a crampon (18) and a binding (20). The side bars (14 and 16) provide sideslip protection and rigidity which makes it possible to construct the flotation plate (12) from lightweight semi-rigid or somewhat flexible material. Channels (34, 36 and 38) are formed in a rear portion (40) of snowshoe (10) which, together with the convex flotation plate (12) and side bars (14 and 16), enhance forward tracking guidance as well as provide additional rigidity to the somewhat flexible flotation plate (12). The binding (20) includes straps (90, 92 and 94) and a one piece fabric foot wrap (96).

US Patent:

44469446, May 8, 1984

Filed:

Mar 9, 1983

Appl. No.:

6/473577

Inventors:

William E. Forrest - Denver CO
Frank R. Lupton - Denver CO

Assignee:

Forrest Mountaineering, Inc. - Denver CO

International Classification:

A62B 3500

US Classification:

182 3

Abstract:

A shock absorber has been provided for absorbing the kinetic energy of a falling body wherein a series of variable length shock absorbing straps made of undrawn nylon are attached to a longer back-up strap made of non-stretchable material and are folded back and forth upon themselves and contained within an abrasive resistant package. The energy absorbing straps can be treated with ethylene glycol to prevent freezing and can be covered with petroleum jelly to prevent both the escape and entry of moisture and to prevent the evaporation of the ethylene glycol. In addition, a plastic liner can be placed around the assembly and the covering for the assembly can be provided with a waterproof coating to further minimize the evaporation of moisture and ethylene glycol within the strap assembly and to prevent entry of additional moisture. The cover is arranged to tear away when a force is applied by a falling body to the shock absorber greater than a minimum predetermined value so that the energy absorbing straps can be serially stretched to absorb the kinetic energy of the falling body.

US Patent:

45387044, Sep 3, 1985

Filed:

Mar 2, 1984

Appl. No.:

6/585831

Inventors:

William E. Forrest - Denver CO

Assignee:

Advanced Evacuation Systems - Denver CO

International Classification:

A62B 102
A62B 3500

US Classification:

182 10

Abstract:

This invention relates to a multiperson emergency evacuation system characterized by a first rope used for the initial descent down the outside of the building, a combination anchoring and descent control fixture mountable adjacent the escape opening used to both anchor the upper end of a ground or rooftop-anchored fixed rope and for belaying with a second rope the personnel riding the fixed rope down by means of a friction drum mounted thereon, a body harness and a special connection for detachably fastening each individual escapee at spaced points intermediate the ends of the movable belay rope. The invention also encompasses the novel method of evacuating more than one person from the upper floors of a multistory building which comprises first erecting a fixture adjacent the escape opening having a drum-type friction belay feature, and then, assuming no one is on the ground to catch and anchor the fixed rope, sending one or more persons down to receive and anchor it while belaying them from above. After anchoring the lower end, the slack is removed from fixed rope at the upper end before tying it off. Next, a second movable belay rope used to belay the evacuees is rigged alongside the fixed rope.

US Patent:

D2887720, Mar 17, 1987

Filed:

Mar 2, 1984

Appl. No.:

6/585830

Inventors:

William E. Forrest - Denver CO

Assignee:

Advanced Evacuation Systems - Denver CO

US Classification:

D 8356

US Patent:

D2866889, Nov 11, 1986

Filed:

Feb 22, 1984

Appl. No.:

6/582295

Inventors:

William E. Forrest - Denver CO

Assignee:

Advanced Evacuation Systems - Denver CO

US Classification:

D29 1

US Patent:

D2845210, Jul 8, 1986

Filed:

Apr 27, 1984

Appl. No.:

6/604633

Inventors:

William E. Forrest - Denver CO

Assignee:

Forrest Mountaineering, Ltd. - Denver CO

US Classification:

D 2405