Facility for manufacturing two- or multi-compartment tubes

Details Facility for manufacturing two- or multi-compartment tubes Facility for manufacturing two- or multi-compartment tubes

1999-05-21

2001-05-08

Pyon, Harold (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

And means to form or reshape preform

C425S393000

Reexamination Certificate

active

06227837

ABSTRACT:

The invention relation to an apparatus for the manufacture of dual- or multiple-chamber tubes.
Various apparatus for the manufacture of single-chamber tubes are known using mandrels adapted to be assigned to a plurality of working stations, a tube body being slid onto the mandrels in at least one working station, and being connected in fixed relationship to a prefabricated or moulded tube head in further stations.
A need exists to provide dual chamber tubes or multiple chamber tubes utilising prefabricated tube bodies partitioning the tube body in the tube interior into two or more longitudinal chambers, parallel to one another, by means of one or a plurality of partitions.
No apparatus for the manufacture of multiple chamber tubes are known at present utilising a prefabricated tube body comprising one partition or a plurality of partitions.
From U.S. Pat. No. 5,076,470 a tube is known consisting of two or three concentrically arranged tube bodies, adapted to be connected to a tube head, comprising a separate discharge aperture for each annular chamber formed by the concentric arrangement of the individual tube bodies of varying diameter, in which context the individual tube bodies can be slid onto concentrically arranged mandrels in order to connect the individual tube bodies to the head portion, relative axial displacements being possible between the individual concentric mandrels.
It is the problem of the invention to provide an apparatus for the manufacture of dual-chamber tubes or multiple-chamber tubes by means of a prefabricated tube body.
The use of individual sectional mandrels, leaving a gap between one another, the respective sectional mandrels having a cross-section which in each case corresponds to the cross-section of the cavity of an individual chamber of the desired dual chamber or multiple chamber tube, makes it possible to apply the prefabricated tube bodies with partitions onto the mandrels comprising sectional mandrels, the appropriate partition(s) being introduced into the gap(s). The tube body with a partition positioned in this manner is then provided with a tube head in one or more working steps. This is performed preferably by press moulding or transfer moulding or even by injection moulding, partition webs in the head and connections of the partition webs to the partitions being simultaneously likewise produced during the moulding process.


REFERENCES:
patent: 2390171 (1945-12-01), Ratay
patent: 3081926 (1963-03-01), Newton
patent: 3101850 (1963-08-01), Quinche
patent: 3227319 (1966-01-01), Rosier
patent: 3290422 (1966-12-01), Michel
patent: 3446688 (1969-05-01), Flax
patent: 3991294 (1976-11-01), Evans
patent: 4302176 (1981-11-01), Gordon
patent: 4768323 (1988-09-01), Coutant et al.
patent: 5076470 (1991-12-01), Hatakeyama et al.
patent: 5900086 (1999-05-01), Keller
patent: 24 53 503 (1975-05-01), None
patent: 36 16 207 (1987-11-01), None
patent: 195 22 169 (1997-01-01), None
patent: 2011344 (1979-07-01), None
patent: 4-158017 (1992-06-01), None
Extract of letter sent to colleagues in Australia regarding the citation US 3, 991, 294.

Affiliated with

Also associated with

Rating

Facility for manufacturing two- or multi-compartment tubes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Facility for manufacturing two- or multi-compartment tubes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Facility for manufacturing two- or multi-compartment tubes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2487778