Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...
Patent
1991-02-28
1994-11-29
Timm, Catherine
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Including application of internal fluid pressure to hollow...
264DIG33, B29C 4900
Patent
active
053688104
ABSTRACT:
A method of manufacturing a dispenser for depositing a liquid material onto a print medium wherein a circular tube having a substantially uniform wall thickness is formed of moldable plastic material. The tube is placed in a mold cavity having a portion for receiving the tube in interfitting engagement and an enlarged cavity portion extending outwardly from the wall of the tube. Pressure is applied to the internal walls of the tube with the tube in plastic flow condition to expand the tube walls into the cavity forming a bulbous portion having a wall thickness less than the tube uniform wall thickness to provide a squeezable portion of greater flexibility than the remainder of the dispenser body.
REFERENCES:
patent: 2587382 (1952-02-01), Pyne
patent: 3029468 (1962-04-01), Valyi
patent: 3197532 (1965-07-01), Maass
patent: 3608268 (1971-09-01), Lauritzen
patent: 4221492 (1980-09-01), Boscardin et al.
patent: 4812071 (1989-03-01), Batra
Advertisement, DeWitt Plastics, Plastics Engineering, Feb. 1962, p. 165.
Advertisement, Jomar, Modern Plastics Encyclopedia, Oct. 1984 p. 193.
Advertisement, Hayssen Manufacturing, Modern Plastics Encyclopedia, Oct. 1984 p. 189.
Draper Ronald A.
Sandonato James L.
Brine Aubrey C.
Meegan Owen J.
The Gillette Company
Timm Catherine
Tobin Donal B.
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