Winding – tensioning – or guiding – Reeling device – With particular drive
Reexamination Certificate
1999-10-29
2001-07-03
Jillions, John M. (Department: 3653)
Winding, tensioning, or guiding
Reeling device
With particular drive
C242S390800, C254S13430R
Reexamination Certificate
active
06254026
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to apparatus for electric wiring, and more particularly to an apparatus for pulling an electric wire through an electric conduit.
2. Description of the Prior Art
When a building is constructed, electric conduits are provided in each house for electric wiring. When an electric wire is to be installed in an electric conduit, a spring wire is used and inserted from one end of the electric conduit to the other end thereof, and then the electric wire to be installed is fastened to the lead end of the spring wire, and then the spring wire is pulled back to carry the electric wire through the electric conduit. This electric wiring method consumes much labor and working time.
SUMMARY OF THE INVENTION
This invention relates to apparatus for electric wiring, and more particularly to an apparatus for pulling an electric wire through an electric conduit.
According to one aspect of the present invention, the apparatus comprises a housing having a folding stand and a handle, a reel including a flexible tape, a rolling ball-equipped tape leader detachably connected to the lead end of the flexible tape outside the housing, and a motor drive controlled to let off/take up the flexible tape, permitting the lead end of the flexible tape to be moved between the inlet of an electric conduit to the outlet thereof to carry an electric wire through the electric conduit. According to another aspect of the present invention, photo detector means is installed inside the housing to detect the movement of the flexible tape, so as to automatically cut off power supply from the motor drive when the flexible tape is fully extended out or retracted.
REFERENCES:
patent: 4056859 (1977-11-01), Pace
patent: 4172563 (1979-10-01), Werner et al.
patent: 4644791 (1987-02-01), Sonoda et al.
patent: 4842108 (1989-06-01), Anderson et al.
patent: 5440297 (1995-08-01), Bright
patent: 5505432 (1996-04-01), Noonan
patent: 5582392 (1996-12-01), Bajric et al.
patent: 5645265 (1997-07-01), Shu
patent: 6016609 (2000-01-01), Donovan et al.
A & J
Jillions John M.
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