Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
2001-04-27
2004-09-14
Eashoo, Mark (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C264S255000, C264S259000
Reexamination Certificate
active
06790399
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a disc cable and a method for producing the same, the disc cable traveling within piping to carry feed for domestic animals to a large number of feeders.
2. Description of the Related Art
As a feed carrying apparatus for carrying feed for domestic animals to a number of feeders through piping from a feed hopper, a feed carrying apparatus
101
as shown in
FIG. 7
has been heretofore known. In the feed carrying apparatus
101
, a large number of feeders
107
,
107
, . . . are disposed on piping
104
connected endlessly through feed falling pipes
106
,
106
, . . . held in a predetermined spacing relation, and a driving device
102
to forcibly feed a disc cable
103
inserted into the piping
104
and connected endlessly in a direction of arrow x is disposed.
Further, a feed throw-in port
105
a
is formed at the lower end of a feed hopper
105
shown by the dotted lines in the figure, and feed fall-ports
106
a
are formed at the lower end of the feed falling pipes
106
, whereby feed S is thrown into the piping
104
from the feed throw-in port
105
a
, carried within the piping
104
by the disc cable
103
, and supplied from the feed fall-ports
106
a
into feeders
107
.
In the disc cable
103
, as shown in
FIG. 8
, discs
112
are fixedly mounted in a predetermined spacing relation on a wire
111
, and the wire
111
is constituted such that as shown in
FIG. 9
, a bundled members
115
having a plurality of metal wires
114
bundled are twisted around a fiber element
113
arranged in the center.
However, the disc cable
103
is driven in a state loaded with high tension, comes in contact with mechanism parts such as a pulley, and is curved within the driving device
102
and at a corner part
104
a
of the piping
104
. Therefore, the wire
111
becomes worn as the time passes, and the surface thereof becomes napped. After passage of a few years, the wire
114
is partly cut, whose fine pieces are mixed into the feed S and carried.
When domestic animals eat such fine pieces of the wire
114
together with the feed S, the wire
114
which is made of metal as described above sometimes sticks into the internal organs such as the stomach and the intestines of domestic animals, and the domestic animals becomes sick or the growth thereof is impeded. Further, when a human being eats such the internal organs of domestic animals, there poses a problem that the human body is seriously affected thereby.
SUMMARY OF THE INVENTION
The present invention has been accomplished in order to solve the problem as noted in the conventional disc cable. It is an object of the present invention to provide a disc cable capable of preventing occurrence of fine pieces of a wire caused by wear and damage of the wire over a long period to be mixed into feed.
For solving the aforementioned problem, the present invention provides a disc cable which travels within piping connected endlessly, the cable having discs disposed thereon in a predetermined spacing relation, wherein a cover layer formed of synthetic resin is formed on the surface of a metal wire to constitute a cable.
Preferably, the synthetic resin for forming the cover layer is synthetic resin having flexibility.
Alternatively, in the disc cable, the cover layer is not partly formed in the cable, but a groove-like part to which is exposed the surface of the metal wire is formed, and a protrusion corresponding to the groove-like part is formed on the disc.
Alternatively, in the disc cable, the cover layer is formed on the surface of the metal wire in predetermined length, and the disc is formed integral with the cover layer.
Preferably, the disc is formed with a fitting hole reaching the substantially central part so that one end of the cover layer is fitted in the fitting hole.
Further, in the disc cable, an inner layer part of a boss part is formed integral with a flange part of the disc, one end of the cover layer is covered over the inner layer part of the boss part to form an outer layer of the boss part.
Preferably, a depression is formed in the inner layer part of the boss part, and a protrusion corresponding to the depression is formed on one end of the cover layer.
The producing method for a disc cable according to the present invention is able to produce a disc cable of the present invention suitably, and comprises a step of forming a cover layer formed of synthetic resin on the surface of a metal wire, and a step of molding a disc and fixedly mounting it on the cable.
Preferably, in forming the cover layer, a groove-like part which the surface of the metal wire is exposed in which the cover layer is not partly formed in a predetermined spacing relation in a longitudinal direction of the cable, and in molding the disc, synthetic resin is flown into the groove-like part to form a protrusion on the disc.
Further, the producing method for a disc cable according to the present invention comprises a step of forming a cover layer formed of synthetic resin on the surface of a metal wire in a predetermined length, and molding a disc formed of synthetic resin integral with the cover layer.
Preferably, in molding the disc, a fitting hole is formed in the disc, and one end of the cover layer is fitted in the fitting hole.
Further, the producing method for a disc cable according to the present invention comprises a step of molding a disc formed of synthetic resin on the surface of a metal wire to fixedly mount the wire, and a step of forming a cover layer formed of synthetic resin on the surface of the metal wire and covering one end thereof on a boss part of the disc.
Preferably, in molding an inner layer part of the boss part and a flange part of the disc integrally, a depression is formed in the inner layer part of the boss part of the disc, and in forming the cover layer and covering one end thereof on the inner layer part of the boss part of the disc to form an outer layer of the boss part, a protrusion corresponding to the depression is formed on one part of the cover layer.
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