Ventilating needle and method of manufacturing the same

Details Ventilating needle and method of manufacturing the same Ventilating needle and method of manufacturing the same

1987-04-20

1988-07-12

Wityshyn, Michael

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563096, 1565801, 210446, 21050021, 210506, 264 23, B32B 3120, B29C 6508

Patent

active

047567805

ABSTRACT:
This invention discloses a ventilating needle having a membrane-type filter stretched across the communication passage of a hub portion of the needle. In this invention, the membrane-type filter is of 2-ply type composed of a reinforcement layer and a water-repellent filter having a higher melting point than said reinforcement layer. This membrane-type filter is thermally adhered to a step portion formed in the innter wall of the hub portion through interfusion of the reinforcement layer and the step portion. This invention also discloses a method of assembling the ventilating needle in which a membrane-type filter is adhered to a step portion formed in the inner wall of the hub by means of ultrasonic waves.

REFERENCES:
patent: 3157481 (1964-11-01), Bujan
patent: 3757780 (1973-09-01), Ishikawa
patent: 3806386 (1974-04-01), Burke et al.
patent: 3970490 (1976-07-01), Raines et al.
patent: 4055176 (1977-10-01), Lundquist
patent: 4061143 (1977-12-01), Ishikawa
patent: 4113627 (1978-09-01), Leason
patent: 4298358 (1981-11-01), Ruschke
patent: 4326957 (1982-04-01), Rosenberg
patent: 4473094 (1984-09-01), Harris
Branson Ultrasonic News (Oct. 1977), p. 9.

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