Llewellyn A Gilman from Hampden, ME

Name / Title

Company / Classification

Phones & Addresses

Llewellyn Gilman
Owner

Lew Gilman Inventions
Mfg Plastic Products

17 Fry St, Newburgh, ME 04444
(207)8623447

Rotational Molding Method
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US Patent:

48369632, Jun 6, 1989
Filed:

May 26, 1987
Appl. No.:

7/053542
Inventors:

Llewellyn A. Gilman - Hampden ME
Assignee:

Old Town Canoe Company - Old Town ME
International Classification:

B29C 6722
B29C 4106
US Classification:

264 457
Abstract:

An improved rotational molding method for making a laminated plastic structure of the type in which successive charges of particulate plastics are released in a mold cavity rotating in an oven to coalesce successively along the mold cavity wall after which the mold is removed from the oven for cooling. By removing the rotating mold from the oven prior to completion of the formation of the inside layer, cooling of the outside of the mold will be concurrent with coalescence of the inside layer. This shortens the time of the molding cycle and reduces warping problems.

Boat Hull
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US Patent:

49139444, Apr 3, 1990
Filed:

Jun 17, 1988
Appl. No.:

7/209103
Inventors:

Llewellyn A. Gilman Jr. - Hampden ME
Assignee:

Old Town Canoe Company - Old Town ME
International Classification:

B32B 326
US Classification:

428 365
Abstract:

A rotationally molded boat hull, comprising three integral layers of polyethylene, is provided. The outer and inner layers are comprised of a cross linkable polyethylene, and the middle layer comprises a noncross linkable polyethylene having a foaming agent incorporated there into. The three polyethylene materials are selected to produce a composite structure having optimum strength and flexibility characteristcs.

Llewellyn A Gilman