Method of making a segmented polymer energy absorption device

Details Method of making a segmented polymer energy absorption device Method of making a segmented polymer energy absorption device

1991-04-29

1992-08-25

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264DIG41, 425DIG27, B29C 5330

Patent

active

051416972

ABSTRACT:
A method of producing segmented hollow body devices and the resulting products. The segmentation is accomplished by providing areas of increased cross-section around the circumference of the preform followed by axial compression thereof. These steps are followed by removal of the axial force resulting in a product which is segmented in accordance with the areas of increased cross-section and has a reduced free height.

REFERENCES:
patent: T100801 (1981-07-01), Bianca
patent: 2347101 (1944-04-01), Harding
patent: 3339004 (1967-08-01), Nardone
patent: 4198037 (1980-04-01), Anderson
patent: 4566678 (1986-01-01), Anderson
patent: 4900503 (1990-02-01), Hegler et al.
patent: 5000215 (1991-03-01), Phillips

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