Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1993-12-15
1995-11-28
Bertsch, Richard A.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
41747712, F04B 4308
Patent
active
054702100
ABSTRACT:
A product filling assembly includes a rotary member which has two discs mounted for rotation on a common central shaft and a plurality of additional shafts and rollers positioned between the discs so that a circumferential portion of each roller extends beyond the circumference of the discs. The assembly also includes a wall member which is positioned adjacent the rotary member and has an interior wall surface which extends from a peripheral flanged wall edge and which is positioned and configured so that a channel is provided between the interior surface and the rotary member at a position between the discs for passage of the rollers and so that the flanged wall edge extends, with respect to a circumference of the rotary member, as an arc for a distance at least as great as a distance between two adjacent additional shafts. An elastic membrane extends from the wall member edge to separate the rotary member from the channel, and two plates are positioned to extend from the first shaft parallel one to the other and to the discs and so that the two discs are positioned between the plates. The discs, additional shafts, rollers, wall member and plates are configured and positioned so that the rollers are positioned adjacent the membrane so that upon rotation of the discs and revolution of the rollers, an adjacent pair of rollers stretch the membrane into contact with the interior wall to cause occlusions to form successively.
REFERENCES:
patent: 3408946 (1968-11-01), McMillan
patent: 3507585 (1970-04-01), Mercer
patent: 3597123 (1971-08-01), Lutz
patent: 3790313 (1974-02-01), Magerle
patent: 4155362 (1979-05-01), Jess
patent: 4407436 (1983-10-01), Broadfoot et al.
patent: 4997347 (1991-03-01), Roos
Bertsch Richard A.
Freay Charles G.
Nestec S.A.
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