Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1989-04-27
1991-02-12
Wityshyn, Michael
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
53436, 53486, 53526, 55DIG5, 156 69, 156 731, 1565802, 2105021, 264249, B29C 6508, B29C 6556
Patent
active
049922190
ABSTRACT:
A method and an apparatus are provided for securing a bed of charcoal under pressure in a plastic material housing in the manufacture of charcoal filter canisters for gas masks. The bed of particulate charcoal is placed in the housing and covered with a retainer. A compactor is placed on the retainer and loaded to produce the desired compaction of the charcoal. An ultrasonic welder is then used to secure the retainer in place for one embodiment, a spring-loaded compactor is placed on top of the retainer and an ultrasonic nodal horn is placed over the compactor. The horn presses the compactor against the retainer with the necessary compressing force to compress the charcoal bed, while at the same time producing an ultrasonic weld around the periphery of the housing, welding the retainer in place. The compactor seats on a nodal point of the horn, so that ultrasonic vibrations are not transmitted from the horn through the compactor to the charcoal bed.
REFERENCES:
patent: 3483066 (1969-12-01), Harris et al.
patent: 3688464 (1972-09-01), Fox
patent: 3850776 (1974-11-01), Karobath et al.
patent: 3972758 (1976-08-01), Bleber
patent: 4399491 (1983-08-01), Kackenmeister
patent: 4411122 (1983-10-01), Cornish et al.
patent: 4422861 (1983-12-01), Dusza
patent: 4714486 (1987-12-01), Silverthorn
Her Majesty the Queen in right of Canada as represented by the
Wityshyn Michael
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