Means providing separation of exterior sheath of liquid on dispe

Details Means providing separation of exterior sheath of liquid on dispe Means providing separation of exterior sheath of liquid on dispe

1985-09-05

1986-10-07

Bell, Jr., Houston S.

Fluent material handling, with receiver or receiver coacting mea

Filling or refilling of dispensers

141 91, 7386324, 222148, 239105, 422 64, B67C 106, B65B 304

Patent

active

046153608

ABSTRACT:
There is disclosed apparatus in which an aspirating and dispensing tip is provided with liquid wherein residual liquid is left as a sheath on the exterior of the tip after aspiration. The apparatus is improved to include means exterior of the dispensing tip for separating the sheath into at least two parts without detaching residual liquid physically from the exterior surface, the two parts being separated along the axis of the tip by a dry annular portion of the exterior surface having a suitable width. Such separating means is spaced away from the tip a distance effective to prevent contact of the separating means with either the tip or the liquid of the sheath.

REFERENCES:
patent: 3552212 (1971-01-01), Ohlin
patent: 4287155 (1981-09-01), Tersteeg et al.
patent: 4340390 (1982-07-01), Collins et al.
patent: 4347875 (1982-09-01), Columbus

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