Dispensing – With heating or cooling means – Heating only
Reexamination Certificate
2000-02-25
2001-01-09
Bomberg, Kenneth (Department: 3754)
Dispensing
With heating or cooling means
Heating only
C239S390000, C239S397000
Reexamination Certificate
active
06170709
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a hot-melted adhesive gun. More particularly, the present invention relates to a hot-melted adhesive gun which can receive or replace an adhesive rod easily.
Referring to
FIGS. 1 and 2
, a conventional hot-melted adhesive gun has a handle portion
10
, a barrel portion
11
, a propeller device
13
disposed on an upper portion of the handle portion
10
, a hot-melted device
2
disposed in the barrel portion
11
, an injection nozzle
22
disposed on a front portion of the barrel portion
11
, and a trigger
12
disposed on a front portion of the handle portion
10
. The hot-melted device
2
has a pipe
21
, an electric heater
23
disposed on a lower portion of the pipe
21
, and a soft tube
25
connected to the pipe
21
. A conductive wire
24
is connected to the electric heater
23
. An electric wire
4
is connected to the conductive wire
24
. The trigger
12
drives the propeller device
13
to move. A hot-melted adhesive rod
3
a is inserted in the soft tube
25
and the pipe
21
. When the propeller device
13
moves forward, a hot-melted adhesive will be ejected via the injection nozzle
22
. When a colorful hot-melted adhesive rod replaces the original hot-melted adhesive rod
3
a
, a residual hot-melted adhesive should be ejected entirely. Therefore, the residual hot-melted adhesive will be wasted.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a hot-melted adhesive gun which can receive a first adhesive rod and replace the first adhesive rod with a second adhesive rod without wasting a residual hot-melted adhesive of the first adhesive rod.
Accordingly, a hot-melted adhesive gun comprises a holding portion, a barrel, a hot-melted device disposed in the barrel, a front casing, and a rear casing. The holding portion has a button, an insertion hole receiving the button, a spring enclosing a middle portion of the button, a pressing end disposed on a bottom of the button and out of the insertion hole, a blocking portion adjacent to the circular hole, a male socket, and a support plate. The male socket has an oblong hole and an upper face. The barrel has a hollow casing, a through hole, and a guide groove. The front casing has a round aperture and a rear flange. The rear casing has a tube, and a female socket. The tube has an elastic click plate contacting a bottom of the button. The hot-melted device has a main pipe, an electric heater disposed on a lower portion of the main pipe, a rear pipe connected to the main pipe, and an injection nozzle disposed on a front portion of the main pipe. Two conductive rods are connected to the electric heater. The tube is inserted in the circular hole of the holding portion. The elastic click plate engages with the blocking portion. The female socket engages with the male socket. The female socket has two through apertures receiving the conductive rods. Two conductive wires are connected to the conductive rods. Two electric wires are connected to the conductive rods. The male socket receives the conductive wires. The hot-melted device is inserted in the hollow casing. The injection nozzle passes through the through hole of the hollow casing. The front casing is disposed on a front portion of the hollow casing. The hollow casing is disposed on the support plate and in front of the rear casing. The rear pipe is inserted in the tube.
REFERENCES:
patent: 5529245 (1996-06-01), Brown
patent: 5664701 (1997-09-01), Massena
patent: 5881912 (1999-03-01), Bokros
patent: 5881924 (1999-03-01), Bokros
patent: 6041972 (2000-03-01), Maayeh et al.
Bomberg Kenneth
Kamrath Alan
LandOfFree
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