Apparatus for making biological discs

Details Apparatus for making biological discs Apparatus for making biological discs

1976-12-23

1978-04-11

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With separate heating means for work

156250, 156285, 156382, 156516, 264 92, 264101, 425292, 425384, 425388, 425405R, 425DIG48, 425DIG60, B32B 3114, B32B 3120, B32B 3126

Patent

active

040837467

ABSTRACT:
A method and apparatus for making biological discs comprises the steps and means for welding the longitudinal edges of a pair of identical rectangular plastic sheets together to form a single large sheet. This single large sheet is conveyed to a heating and vacuum forming station where the sheet is heated and vacuum formed to have a plurality of convex cup-like projections formed in the surface thereof. The sheet is then moved to a cutting station where heating mechanisms form openings therein for accommodating an axle and a plurality of tie rods, and the sheet is cut in circular configuration by a cutting device shiftable on a radius of predetermined magnitude.

REFERENCES:
patent: 2387566 (1945-10-01), Custers
patent: 3449195 (1969-06-01), Girard
patent: 3586583 (1971-06-01), Ospelt
patent: 3713765 (1973-01-01), Rise
patent: 3914104 (1975-10-01), Dean et al.
patent: 4017349 (1977-04-01), DePriest et al.

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