Terminal connector stretcher for high-tension cable

Details Terminal connector stretcher for high-tension cable Terminal connector stretcher for high-tension cable

2001-10-15

2002-09-03

Reichard, Dean A. (Department: 2831)

Electricity: conductors and insulators

Conduits, cables or conductors

Combined

C029S235000

Reexamination Certificate

active

06444913

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to high-tension cable terminal connectors and, more specifically, to a cable terminal connector stretcher for high-tension cable, which enables the cable terminal connector to be quickly installed with less labor consumption.
Conventional high-tension cable terminal connectors include pre-mold/pre-fabricated type, heat-shrink type, and cold-shrink type. A pre-mold/pre-fabricated type cable terminal connector, as shown in
FIG. 1A
, is comprised of a plurality of electrically insulative disk nuts
10
fastened to on e another in series. The disk nuts
10
have a center r through hole
10
a
fitting the outer diameter of the cable
100
. During installation, silicon lubricating grease is applied to the periphery of the cable
100
, and then the cable is forced into the center through hole
10
a
of each disk nut
10
. Because the disk nuts
10
are injection-molded from plastics, it is difficult to control the shrinkage of the center through hole
10
a
, and rainwater tends to leak in the gap between the cable
100
and the disk nuts
10
, causing a short-circuit. A heatshrink type cable terminal connector
11
as shown in
FIG. 1B
, has a center through hole
11
a
of diameter greater than the outer diameter of the cable
100
. After insertion of the cable
100
through the center through hole
11
a
of the heat-shrink cable terminal connector
11
, a torch is operated to bake the cable terminal connector
11
, causing it to shrink. However, the heatshrink cable terminal connector
11
tends to be burned out accidentally when baking. When a cold-shrink cable terminal connector
11
is used, as shown in
FIG. 1C
, a tool (not shown) is inserted t through the center through hole
11
a
of the cold-shrink cable terminal connector
11
and operated to expand the outer diameter of the cold-shrink cable terminal connector
11
, and then a spiral tube
12
(see
FIG. 2
) is inserted into the tool in the center through hole
11
a
of the cold-shrink cable terminal connector
11
, and then the tool is removed from the coldshrink cable terminal connector
11
, and then the cable
100
is inserted through the spiral tube
12
in the center through hole
11
a
of the cold-shrink cable terminal connector
11
after having been coated with a layer of silicon lubricating grease, and then the spiral tube
12
is pulled out of the cold-shrink cable terminal connector
11
. After removal of the spiral tube
12
from the cold-shrink cable terminal connector
11
, the cold-shrink cable terminal connector
11
shrinks to hold down the cable
100
. This method is functional, however the use of the spiral tube
12
greatly increases the installation cost.
SUMMARY OF THE INVENTION
It is the main object of the present invention to provide a cable terminal connector stretcher for high-tension cable, which saves much cable terminal connector installation cost and labor. According to the present invention, the cable terminal connector stretcher comprises a pawl ring, the pawl ring comprising plurality of equiangularly spaced and longitudinally extended pawls, and locking loop adapted to be fastened to the pawls of the pawl ring to secure the pawl ring to a high-tension cable terminal connector. According to another aspect of the present invention, the locking loop is comprised of a strip of resilient material having two ends fastened together by a snap.


REFERENCES:
patent: 3808352 (1974-04-01), Johnson
patent: 4389440 (1983-06-01), Keith
patent: 4871599 (1989-10-01), Knorr
patent: 5087492 (1992-02-01), Vallauri et al.
patent: 5130495 (1992-07-01), Thompson
patent: 5408047 (1995-04-01), Wentzel
patent: 5468911 (1995-11-01), Leve et al.
patent: 5495650 (1996-03-01), Crepel et al.
patent: 5685052 (1997-11-01), Meyers et al.
patent: 5944929 (1999-08-01), Vallauri et al.
patent: 6049960 (2000-04-01), Pilling et al.

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