pg_0028
The Patent Office Journal 17.06.2005
17412
(12) PATENT APPLICATION PUBLICATION
(19)
INDIA (21) Application No: IN/PCT/2000/00028/ MUM A
(22) Date of filing of Application : 27/04/2000
(43) Publication Date: 17/06/2005
(54) Title of the invention:
A MACHINE FOR MAKING FILTER BAGS.
(51) International Classification: B 65 B 29/04
(71)
(31) Priority Document No. : BO98A000536
(32) Priority Date :
18/09/1998
(33) Name of priority country :
ITALY
International Application : PCT/IB99/01550
(86)
No. and Filing Date :
16/09/1999
(87) International :
Publication No.
WO 00/1705
(72)
Patent of addition to
Application No. :
NIL
(61)
Filed on N.A.
Divisional to
Application No. : NIL
(62)
Filed on : N.A.
Name of the Applicant:
I. M. A. INDUSTRIA MACCHINE
AUTOMATICHE S. p. A. ,
Address of the Application:
VIA EMILIA LEVANTE, 428-442,
40064 OZZANO DELL'EMILIA,
BOLOGNA, ITALY.
Name of the Inventors:
1. MARZOCCHI PAOLO
Filed U/S 5(2) before the
Patents (Amendment)
Ordinance,2004 : NO
(57) Abstract: An improved machine (1) for making filter bags (2)
containing a product for infusion, with a pick-up tag (3) connected to the
top (12) of the filter bag (2) by an intermediate thread (5), comprises a
wheel (6) which rotates with a stepping motion about its own axis of
rotation (16) and is equipped with grippers (7) which are brought into
contact with a series of operating stations, comprising at least one station
(9) for folding a tubular semi-finished product (20) containing the product
for infusion, and at least one station (15) for knotting the thread (5). The
machine (1) has thread (5) feed means (33, 34, 35) which operate on the
thread (5) fed between consecutive pairs of the grippers (7) along the edge
of the wheel (6) so as to prevent it from sliding backwards. The thread (5)
knotting station (15) is equipped with needles (45) which have a first and
second eye (51, 52) positioned at different
(Figure: 01)
distances from the point. The needles (45) are moved in such a way as to pick up the thread (5) with the second eye
(52), forming a loop (62) in which the thread (5) is associated with the first eye (51), interceptor elements (54) being
moved in time with the needles (45) so that they passe through the first eye (51), pushing a section of thread (5)
through the loop (62). The invention also relates to a method for knotting the thread (5).
Total Pages: 47
