Tape dispenser

Details Tape dispenser Tape dispenser

2002-02-21

2003-12-30

Shoap, Allan N. (Department: 3724)

Severing by tearing or breaking

Severing by manually forcing against fixed edge

Blade mounted on hand-held wound package

C225S077000, C225S081000

Reexamination Certificate

active

06669070

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to tape dispensing devices, and more particularly to an adhesive tape dispenser that prevents adhesive tape retraction and clinging, while also facilitating convenient adhesive tape roll reloading.
BACKGROUND OF THE INVENTION
As indicated in FIG.
1
and
FIG. 2
, a conventional adhesive tape dispenser
80
is comprised of a dispensing body
81
of one-piece injection molded plastic construction having a front portion
81
, a side portion
83
extending contiguously back from each of the left and right ends of the front portion
11
, and a roll transport portion
84
projecting inward from the interior lateral surface of each said side portion
83
, wherein a vertical post
85
is disposed on the interior surface at the rear end of one roll transport portion
84
and a vertical hole
86
is formed on the interior surface at the rear end of the other roll transport portion
84
, and a blade
87
mounted on the bottom surface of the dispensing body
81
front portion
81
.
During utilization, the two side portions
83
are spread outward an appropriate degree and a roll of adhesive tape is rotatably placed onto the two roll transport portions
84
and then the post
85
is inserted into the hole
86
to conjoin the two roll transport portions
84
together, following which the adhesive tape is pulled forward to the bottom side of he said front portion
82
and the adhesive tape is applied onto an object as the tape dispenser
80
is moved backward such that the adhesive tape is continuously unrolled forward for application and finally cut by the blade
87
.
The tape dispenser
80
has the advantages of structural simplicity and low production cost, but exhibits the following two shortcomings during utilization that await improvement:
1. Since the adhesive tape roll rotates freely on the roll transport portions
84
, the rotational direction of the adhesive tape roll can be reversed due to angular disposition or an unanticipated application of external force, causing a small portion at the adhesive tape end of to spindle back and stick onto the circumferential surface of the adhesive tape roll; as such, it is necessary to undertake the troublesome ordeal of once again finding the end of the adhesive tape during usage.
2. The use of the vertical post
85
and vertical hole
86
to conjoin the two roll transport portions
84
achieves an approximate tangential relationship between the curved surfaces of the roll transport portions
84
and, furthermore, since the post
85
must be inserted upward into the bottom end of the hole
86
, when the adhesive tape roll is loaded and the post
85
must be inserted into the hole
86
or the post
85
must be drawn out of the hole
86
, the two roll transport portions
84
have to be radially aligned up and down a certain degree; however, since the roll transport portions
84
are conjoined under the inner circumferential surface of the adhesive tape roll., the alignment procedure is hampered by the inner circumferential surface of the adhesive tape roll such that loading the adhesive tape roll is difficult.
Referring to
FIG. 3
, it is an another similar type conventional adhesive tape dispenser
90
, the physical structure resembles the previous dispenser, but has a check portion
92
disposed on the inner lateral surfaces towards the front end of each side portion
91
such that after the adhesive tape is cut, a small portion of it hangs down and sticks lightly onto the two check portions
92
, thereby preventing the end of the adhesive tape from becoming retracted onto the circumferential surface of the adhesive tape roll. While this method reduces the occurrence of adhesive tape back spindling and sticking, any reverse rotation caused by an unintended application of force easily detaches the adhesive tape end from the check portions
92
, which is then retracted onto the circumferential surface of the roll. As a result, such conventional adhesive tape dispensers are incapable of effectively solving the problem of adhesive tape retraction onto the adhesive tape roll.
In addition, the dispenser
90
has a forward facing fastening hook
94
at the interior rear side of one roll transport portion
93
and a rearward facing fastening hook
95
at the interior rear side of its other roll transport portion (not fully shown in the drawing). During utilization, the two fastening hooks
94
and
95
are engaged to conjoin the two roll transport portions
93
. However, the design requires that the two roll transport portions
93
be radially aligned at the front and the rear and are similarly hampered by the circumferential surface of the adhesive tape roll and inconveniencing operation.
Furthermore, referring to U.S. Pat. No. 5,921,450, the invention addresses the adhesive tape retraction and sticking problem by providing an improved structure tape dispenser have a roller bar capable of rotating in a single direction or moving upward at an angle to thereby effectively prevent the tape end from retracting upon itself. However, such a design is of greater structural complexity and higher production cost.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an adhesive tape dispenser that prevents the end of the adhesive tape from spindling back and clinging to the circumferential surface of the adhesive tape roll to thereby increase convenience during utilization; furthermore, the present invention is structurally simple and of lower production cost.
Another objective of the present invention is to provide an adhesive tape dispenser in which the loading and unloading of the adhesive tape roll requires less effort and is more expedient.
To achieve the objectives, the adhesive tape dispenser provided by the present invention is comprised of a dispensing body of one-piece injection molded plastic construction having a front portion, two side portions respectively extending back from the left and right ends of the front portion, two roll transport portions respectively protruding inward from the interior surfaces of said side portions, and at least one check portion disposed at the front ends of the interior surfaces of said side portions. A blade is mounted on the front portion of the dispensing body. At least one tensile anti-reverse member is extended from the peripheral surfaces of the roll transport portions of the dispensing body and oriented to follow the rotational direction of the adhesive tape roll that is rotated forward in application. As such, the adhesive tape roll can be rotated forward to apply tape, but the adhesive tape roll cannot be easily rotated backward due to the braking action occurring at the rear extremity of the tensile anti-reverse member.
In addition, the tape dispenser of the present invention further comprises at least one snap-fit recess portion formed on the inner end of one of the roll transport portions, with the opposing said roll transport portion having at least one split post portion for inserting the snap-fit recess portion so as to fasten the two roll transport portions together at an appropriate degree of tightness. As such, the two roll transport portions are conjoined or separated axially along the roll of adhesive tape and are not hampered by the inner circumference of the adhesive tape roll.


REFERENCES:
patent: 2609877 (1952-09-01), Hanington
patent: 3895059 (1975-07-01), Link
patent: 4627560 (1986-12-01), Samuelson
patent: 4729518 (1988-03-01), Mathna et al.
patent: 5071051 (1991-12-01), Corbo et al.
patent: 5197386 (1993-03-01), Lin
patent: 5393367 (1995-02-01), Yu Chen
patent: 5802695 (1998-09-01), Willoughby
patent: D442227 (2001-05-01), Carlson
patent: 6478068 (2002-11-01), Brown
patent: 2002/0079345 (2002-06-01), Shah
patent: 2002/0131809 (2002-09-01), Han
patent: 2002/0190091 (2002-12-01), Shah
patent: 562702 (1923-02-01), None

Affiliated with

Also associated with

Rating

Tape dispenser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tape dispenser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tape dispenser will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3181594