U.S. patent application number 11/245342 was filed with the patent office on 2007-04-12 for swiftly adjustable film packing device.
Invention is credited to Hsiu-Man Yu Chen.
Application Number | 20070079578 11/245342 |
Document ID | / |
Family ID | 37909976 |
Filed Date | 2007-04-12 |
United States Patent
Application |
20070079578 |
Kind Code |
A1 |
Yu Chen; Hsiu-Man |
April 12, 2007 |
Swiftly adjustable film packing device
Abstract
A swiftly adjustable film packing device includes a base, and an
extensible rod. The base has an elongate tube extending sidewise,
and the elongate tube is provided with plural through holes spaced
apart equidistantly. The extensible rod slidably fits in the
elongate tube and has a position hole in an inner end section, and
a spring deposited in the extensible rod under the position hole to
expand outward with its elasticity to fit in the poison hole and
further in one of the plural through holes of the elongate tube so
as to adjust the length of the packing device for suiting to the
length of a film roll to be installed thereon. Then the time for
installing a film roll can be reduced by only adjusting the
position of the extensible rod relative to the elongate tube.
Inventors: |
Yu Chen; Hsiu-Man; (Tanzih
Township, TW) |
Correspondence
Address: |
TROXELL LAW OFFICE PLLC
SUITE 1404
5205 LEESBURG PIKE
FALLS CHURCH
VA
22041
US
|
Family ID: |
37909976 |
Appl. No.: |
11/245342 |
Filed: |
October 7, 2005 |
Current U.S.
Class: |
53/592 ;
53/390 |
Current CPC
Class: |
B65B 67/085
20130101 |
Class at
Publication: |
053/592 ;
053/390 |
International
Class: |
B65B 67/08 20060101
B65B067/08 |
Claims
1. A swiftly adjustable film packing device comprising: a base
having an elongate tube extending sidewise from its center, said
elongate tube provided with plural through holes spaced apart
equidistantly, s aid base further having a grip extending out from
a lower edge; an extensible rod slidably fitting in said elongate
tube and having a position hole bored in an inner end section, a
spring deposited in said extendible rod under said position hole
and having elasticity to expand outward in said extensible rod,
said spring fitting through said position hole and then in one of
said through holes of said elongate tube to position said
extensible rod relative to said elongate tube, said extensible rod
further having a grip fixed with its end; and, two limit blocks
respectively attached with an inner end of said elongate tube and
with said grip of said extensible rod.
2. The swiftly adjustable film packing device as claimed in claim
1, wherein said extensible rod has its outer end provided with male
threads, and said grip of said extensible rod has female threads to
engage said male threads of said outer end of said extensible
rod.
3. The swiftly adjusting film packing device as claimed in claim 1,
wherein said extensible rod has its end provided with female
threads and said grip of said extensible rod is provided with male
threads to engage with said female threads
4. The swiftly adjustable film packing device as claimed in claim
1, wherein said two position limit blocks are respectively a
steppped round disc provided with plural slip-preventing lines
formed radially projecting up on its surface.
5. The swiftly adjustable film packing device as claimed in claim
1, wherein said spring in said extensible rod is a bent strip, and
a small projection fixed on top to timely fit in or retreat from
said position hole and said one of said through holes of said
elongate tube.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] This invention relates to a film packing device,
particularly to one provided with an elongate tube bored with a
plurality of through holes and an extensible rod slidably fitting
in the elongate tube for swiftly adjusting the length of the
packing device, and at the same time a grip provided at an end of
the extensible rod to make minute adjustment as well.
[0003] 2. Description of the Prior Art
[0004] A conventional film packing device shown in FIG. 1 includes
a base 1, an elongate tube 2 fixed sidewise to the base 1 and a
threaded rod 3. The elongate tube 2 is provided with female threads
in an open end to engage the male threads of the threaded rod 3.
Then the length of the packing device, in other words, the length
of the elongate tube 2 plus the adjusted threaded rod 3, can be
adjusted by screwing the threaded rod 3, with a film roll installed
around the elongate tube 2.
[0005] However, the conventional film packing device has its length
adjusted by screwing the threaded rod 3 relative to the elongate
tube 2, quite slow in changing its length as one round of rotation
of the threaded rod 3 can only move a length of a pitch of the
threads, taking much time in adjusting the length of the packing
device to suit to that of a film roll.
SUMMARY OF THE INVENTION
[0006] The feature of the invention is a base having an elongate
tube extending sidewise and an extensible rod fitting slidably in
the elongate tube. The elongate tube is provided with plural
through holes spaced apart equidistantly, and the extensible rod is
also tubular and having a position hole in an inner end section,
and a bent spring with a small projection deposited in the
extensible rod to elastically expand outward in or shrink down from
the position hole and further one of the plural through holes of
the elongate tube so the length of the elongate tube together with
the extensible rod may be adjusted to suit to any length of a film
roll to be installed on the elongate tube. Therefore, the whole
length of the packing device, in other words, the whole length of
the elongate tube together with the adjusted extensible rod for a
film roll, can be adjusted by moving the extensible rod inward or
outward relative to the elongate tube and kept secured at the
adjusted position by the projection of the spring fitting in the
position hole and one of the through holes of the elongate tube at
the same time, saving time in handling.
BRIEF DESCRIPTION OF DRAWINGS
[0007] This invention will be better understood by referring to the
accompanying drawings, wherein:
[0008] FIG. 1 is an exploded perspective view of a conventional
film packing device;
[0009] FIG. 2 is a perspective view of a swiftly adjustable film
packing device in the present invention;
[0010] FIG. 3 is an exploded perspective view of the swiftly
adjustable film packing device in the present invention;
[0011] FIG. 4 is a cross-sectional view of the swiftly adjustable
film packing device under an adjusting process in the present
invention; and,
[0012] FIG. 5 is a cross-sectional view of the swiftly adjustable
film packing device minutely adjusted in the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0013] A preferred embodiment of a swiftly adjustable film packing
device in the present invention, as shown in FIG. 2, includes a
base 10, and an extensible rod 20.
[0014] The base 10 has an elongate tube 11 extending sidewise from
the center of the base 10, and the elongate tube 11 is provided
with a preset number of through holes 111 spaced apart
equidistantly. Further, a position limit block 12 is fixed with an
inner end of the elongate tube 11 and also attached with the base
10, formed as a round stepped disc provided with plural
slip-preventing lines 121 formed radially on its surface, and a
grip 13 provided to extend out of the base 10.
[0015] The extensible rod 20 is also tubular, having a position
hole 201 in a front-end section, and a spring 21 made of a bent
elastic strip and fitted in the front-end section just under the
position hole 201. The spring 21 has a small projection 211 on top
to fit in or retreat from the position hole 201, and the extensible
rod 20 has male threads 202 on an outer end section to engage with
female threads of another grip 22, and a position limit block 23
threadably combined with the extensible rod 20.
[0016] In using the film packing device, as shown in FIGS. 3, 4 and
5, if a film roll 30 is to be installed on the packing device, the
extensible rod 20 is first taken off the elongate tube 11, and the
film roll 30 is pushed around the elongate tube 11. Then the
projection 211 of the spring 21 fitting through one of the plural
through holes 111 and also exposed out of the position hole 201 is
pressed down to enable the extensible rod 20 slide gradually in the
elongate tube 11, with the spring 21 pressed by the inner surface
of the elongate tube 11 and having an outward elasticity. Then
after the position of the extensible rod 20 is moved to proper
position to match with the length of a film roll 30, the spring 21
may elastically push up the projection 211 in the position hole 201
and then exposed out of the of the through holes 201 when the
projection 211 moves to that hole 111 needed. Then the grip 22 of
the extensible rod 20 can be rotated to proceed minute adjustment
of its position on the extendible rod 20 so that the position block
12 of the base 10 and the position limit block 23 of the grip 22
may clamp tightly the film roll 30 for a film to be pulled out for
use.
[0017] The invention has the following advantages, as can be
understood from the foresaid description. [0018] 1. The elongate
tube and the extensible rod can be swiftly adjusted to enable a
film roll installed on, enhancing work effect. [0019] 2. The grip
of the extension rod can be used for minutely adjusting the
extensible rod relative to the elongate tube for keeping a film
roll tightly on the elongate tube. [0020] 3. The position limit
block on the base and on the extension rod can keep a film roll of
any size in a tight condition, and the slip-preventing lines
radially formed on the surface of the position limit block can give
friction to the inner side of the film roll, and force the film
roll to rotate together with the position limit block.
[0021] While the preferred embodiment of the invention has been
described above, it will be recognized and understood that various
modifications may be made therein and the appended claims are
intended to cover all such modifications that may fall within the
spirit and scope of the invention.
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