Plastic and nonmetallic article shaping or treating: processes – Disparate treatment of article subsequent to working,... – Effecting temperature change
Patent
1998-03-03
2000-08-01
Heitbrink, Jill L.
Plastic and nonmetallic article shaping or treating: processes
Disparate treatment of article subsequent to working,...
Effecting temperature change
2643281, 264336, B29C 4500, B29C 4540
Patent
active
060962542
ABSTRACT:
The invention relates to multi-use thin-walled tubular devices having a longitudinal slit with non-cutting overlapping edges and corners curved in a manner to provide scissor-like entry-ways at either open end and methods of making and using such devices. The device is rigid lengthwise yet flexible in circumference and has renitent qualities such that the overlapping edges are spring-like. All surfaces and edges are smooth so that the devices are user-friendly and comfortable when used as handle grips for holding and carrying built-in handles of certain carrying objects, attachable handles for carrying items without built-in handles, hand-held exercisers, physical hand rehabilitation devices, hand-manipulated fasteners, and hand-manipulated separators. The dimensions of the device, the material used, and the method of construction may be adapted for the specific application. The preferred method of making is injection molding and requires a specially-designed mold form. It has been discovered that selection of appropriate material and careful control of the molding parameters produces spring-like split tubular devices which develop the desired degree of overlap of the longitudinal edges during the post-mold shrinkage period.
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Photograph and inventor notes regarding "Hand Saver" product purchased in Aug., 1992.
Photograph and inventor notes regarding "Baggle" product purchased in 1988.
Photograph and inventor notes regarding "The Bag Handle" product purchased in 1992.
Photograph and inventor notes regarding "Mano Comoda (Italian) market Bag Grips (English)" product purchased in 1986.
Photograph and inventor notes regarding "Bag Carrying Handle" product purchased in 1993.
Photograph and inventor notes regarding "Pac-A-Sac" product purchased in 1988.
Photograph and inventor notes regarding "Easy Carry Bag Handle" product purchased in 1990.
Photograph and inventor notes regarding "Grocery Tote" product purchased in 1989.
Photograph and inventor notes regarding "Get a Grip" product purchased in Dec., 1993.
Photograph and inventor notes regarding "Shopping Caddy" product purchased in Nov., 1993.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Eggsercizer" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Gripp Ball" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Magic Moon Ball" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Finger Strengthener" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Strong Sam" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Sorbothane Sports Grip" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Oriental Exercise Balls" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Digi-Flex System" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Fixed Hand Grip" product.
Photograph and inventor notes dated May 26, 1994, regarding "Action Hand Exerciser" product.
Photograph and inventor notes dated May 26, 1994, regarding "Be OK Bleedproof Therapy Putty" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Multi-Grip Upper Body Exerciser" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Power-Web Hand Excerciser" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Deluxe Power-Grip Hand Exeriser" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Bennett Ergonomic Hand Exerciser" product.
Photograph and inventor notes dated Apr. 9, 1994, regarding "Cats Paw" product.
Heitbrink Jill L.
O'Connor Christensen
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