U.S. patent application number 11/986086 was filed with the patent office on 2009-05-21 for ergonomically designed dispenser for stretch film.
This patent application is currently assigned to M.S. PLASTICS. Invention is credited to Al Saraisky.
Application Number | 20090127372 11/986086 |
Document ID | / |
Family ID | 40640882 |
Filed Date | 2009-05-21 |
United States Patent
Application |
20090127372 |
Kind Code |
A1 |
Saraisky; Al |
May 21, 2009 |
Ergonomically designed dispenser for stretch film
Abstract
A hand dispenser for stretch film. The stretch film from the
hand dispenser is dispensed by using one hand from a person. The
film is wound around one end of the extended core. The dispenser
comprises a handle; a split barrel or shaft and a tensioning device
inserted in the barrel for creating tension against a core of
stretch film.
Inventors: |
Saraisky; Al; (Butler,
NJ) |
Correspondence
Address: |
WEISS & WEISS
Suite 251, 300 Old Country Road
Mineola
NY
11501
US
|
Assignee: |
M.S. PLASTICS
|
Family ID: |
40640882 |
Appl. No.: |
11/986086 |
Filed: |
November 20, 2007 |
Current U.S.
Class: |
242/422 |
Current CPC
Class: |
B65B 67/085
20130101 |
Class at
Publication: |
242/422 |
International
Class: |
B65H 23/06 20060101
B65H023/06 |
Claims
1. A dispenser for dispensing stretch film comprising: a handle; a
split barrel or shaft; and a tensioning device inserted in said
handle and shaft for creating tension against a core of stretch
film.
2. The dispenser of claim 1 wherein said split barrel or shaft is
compressed and inserted into a film core.
3. The dispenser of claim 1 wherein a front end of said barrel has
a raised lip.
4. The dispenser of claim 3 wherein after said barrel is inserted
into a film core, said raised lip extends beyond the end of said
film core preventing said dispenser from coming out of said film
core.
5. The dispenser for claim 1 wherein said dispenser dispenses
stretch film by using one hand from a person.
6. The dispenser of claim 1 wherein said dispenser comprises a 1''
ID core for dispensing film.
7. The dispenser of claim 1 wherein said dispenser dispenses
approximately 1'' to 6'' width films.
8. The dispenser of claim 1 wherein said tensioning device
comprises a knob at base of said the handle.
9. The dispenser of claim 8 wherein said tensioning device
comprises a tapered screw.
10. The dispenser of claim 8 wherein when said tensioning device is
turned, it extends between two cams located opposite each other on
the interior of said barrel which expands said barrel against
inside of said core on which stretch wrap is wound.
11. The dispenser of claim 10 wherein said tensioning device
provides adjustable and constant tension.
12. The dispenser of claim 1 wherein said handle comprises a foam
sleeve for a cushion grip which fits over said handle.
13. The dispenser of claim 1 wherein tension in said film is
controllable during wrapping process.
14. The dispenser of claim 1 wherein said dispenser has good
balance and facilitates application of said film under
substantially uniform tension across full width of said film for a
uniform wrap.
15. The dispenser of claim 1 wherein said dispenser is adjusted to
accommodate different widths of film rolls.
16. The dispenser of claim 1 wherein said handle is molded.
17. The dispenser of claim 1 wherein said film is dispensed by
using one hand.
18. A method of dispensing stretch film comprising: compressing a
split barrel of a dispenser; placing a roll of stretch film over
said compressed barrel; placing a raised lip at an end of said
roll; adjusting tension by expanding and contracting said barrel
against inside of said roll.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to an ergonomically designed
dispenser for use with stretch film.
BACKGROUND OF THE INVENTION
[0002] U.S. Pat. No. 4,722,493 relates to a holder for dispensing
stretch film from a roll comprising a cylindrical body and an arbor
rotatably supported on the body. A flexible grip having internal
ribs covers the body and the arbor, so that one can by applying
finger pressure to the grip brake rotation of the arbor and thus
control film tension. The patent teaches that the holder comprises
a handle which includes a substantially cylindrical body and a
shaft extending from one end of the body. An arbor is journaled on
the shaft. Means on the arbor engage the film roll, thereby
constraining the roll and the arbor to rotate together on the
shaft. A collar is on the arbor adjacent the handle body. One
holding the handle body may create a braking torque on the roll by
applying radial pressure to the collar.
[0003] U.S. Pat. No. 5,203,517 relates to a dispenser for a stretch
wrap film with cylindrical bearings. The dispenser has a spindle at
the end which forms a hub which attaches to the core of the film
roll and rotates with the roll as the film is unwound. The spindle
extends coaxially from the core of the film roll and is partially
surrounded by a flexible hand grip. Bearings are coaxially mounted
on the spindle and interposed beneath part of the hand grip so that
the spindle may rotate freely with respect to the hand grip. Part
of the hand grip engages the spindle without interposition of
bearings. The dispenser requires a first sleeve bearing mounted
coaxially on the shaft adjacent the hub, a brake drum mounted
coaxially on the shaft adjacent the first sleeve bearing, a second
sleeve bearing mounted on the shaft adjacent the other end of the
brake drum and a single flexible hand grip.
[0004] U.S. Pat. No. 4,575,020 relates to a portable chuck for
dispensing under tension roll of wrapping material. The portable
chuck includes an expandable spindle insertable within one end of
the tubular core, and a handle for selectively expanding the
spindle to create a braking force. The chuck is formed from first
and second chuck pieces, each of which includes a spindle portion,
collar and handle portion. A fulcrum means is disposed between the
first and second chuck pieces above the collar.
[0005] U.S. Pat. No. 4,522,348 relates to a dispenser for stretch
film having a manual braking mechanism. First and second side
members are adjacent to each side of a roll wrapping material. Each
of these side members has a bearing member disposed thereon for
supporting the core. At least one of the bearing members is
insertable into the core and has an expandable bearing surface.
[0006] U.S. Pat. No. 5,094,395 relates to an apparatus and method
for dispensing plastic stretch film wherein a hollow core supply
roll of stretch film is dispensed in a controlled manner utilizing
a brake means mounted within the core. This urges by its own
resiliency against the inside surface of the core while permitting
frictionally retarded axially rotation of the core about the brake
and having handles connected to the brake means.
[0007] U.S. Pat. No. 4,714,211 relates to a dispenser for applying
plastic packaging film under tension about an object of large
volume. The dispenser comprises a base with a handle and a roll
support structure at opposite ends. The roll support structure
comprises a tube that is adjustable relative to the base. There is
provided a means to secure the tube in a selected position,
together with a tension applying means in connection with a hand
grip attached to the upper end of the roll support structure.
[0008] U.S. Pat. No. 5,311,725 relates to a stretch wrap packaging
machine which has a support frame and a rotatable frame rotatably
mounted on the support frame. A dispenser is mounted on the
rotatable frame to follow an orbital path. The dispenser has a web
tensioning system. At least one actuation ring is mounted on the
support frame. An activator moves the actuation ring to cooperate
with the tensioning system.
[0009] U.S. Pat. No. 5,941,049 relates to a method and apparatus
for stretch wrapping a load. A leading end of packaging materials
is placed in a retainer to hold the leading end of the packaging
material. Packaging material is dispensed from a packaging material
dispenser, and relative rotation is provided between the dispenser
and a load to wrap packaging material around the load. The
packaging material is automatically released from the retainer in
response to force applied by packaging material wrapped around the
load or other unpowered actuation.
[0010] U.S. Pat. No. 4,102,513 relates to a dispenser for wrapping
a roll of plastic stretch film under tension about an object. The
dispenser has a reel assembly provided with an adjustable drag
arrangement to set and adjust the tension on the film during the
wrapping operation by the manipulation of a hand grip. Two hand
grips are connected to and arranged relative to the reel assembly
for the balance support thereof during wrapping. One hand grip is
operatively associated with one of a pair of rotary end supports
for the roll of film in such a way that movement of the one hand
grip changes the drag on the roll and thereby the tension on the
film during the wrapping thereof.
[0011] U.S. Design Pat. 317,394 and 382,429 relate to hand held
dispensers for stretch wrap film.
[0012] U.S. Pat. No. 4,179,081 relates to an apparatus for the
manual application of plastic stretch films to materials. The
apparatus consists of an extended core for the supply of plastic
stretch film and a pair of tubular like grip means for the extended
core. The grip means serve as a manual control means for paying out
the plastic stretch film and as a manual means for applying tension
on the film. This patent requires a pair of flexible hand
grips.
[0013] U.S. Pat. No. 4,248,392 relates to an apparatus for the
application of plastic stretch films. The apparatus consists of a
pair of insertable adaptors for the ends of a cylindrical core
which hold a supply of plastic stretch film and a pair of tubular
like grip means for the insertable adapters. This patent requires a
pair of insertable adapters and a pair of flexible hand grips.
[0014] U.S. Pat. No. 4,477,037 relates to a stretch wrap film
dispenser wherein the stretch wrap film is wound on a core which is
longer than the roll of film to extend out of both ends. A
rotatable handle is mounted on the core outboard of the film.
Relative brake nib between the handle and core is adjusted by a
screw thread.
[0015] U.S. Pat. No. 4,484,717 relates to a stretch wrap film
dispenser with single digit tension control. A brake ring under at
least one index finger can be clamped by that finger under the
spindle to apply braking.
[0016] In the prior art, when a user wanted to dispense stretch
film, the user created tension from the handle of the device onto
the core of the device that the film is wound on. This tension is
created by hand pressure (squeezing the handle).
[0017] In the prior art, this hand pressure creates a discomfort or
burning to the user's hand. This hand pressure also results in
uneven tension control as the film is wrapped around the product.
Another common problem that occurs with the standard dispenser is
that it does not adjust to the variations of the inside dimensions
of the core. If the core is too large, the roll of film will slip
out of the dispenser. Conversely, if the core is too small it is
very difficult to push the dispenser into the core.
SUMMARY OF THE INVENTION
[0018] The present invention relates to an ergonomically designed
dispenser for use with narrow width stretch film. The present
invention relates to a hand dispenser for stretch film. It is an
object of the present invention for the stretch film from the hand
dispenser to be dispensed by using one hand from a person.
[0019] A common problem that has occurred with prior art dispensing
devices is that they do not adjust to the variations of the inside
dimensions of the film core. If the film core is too large, the
roll of film will slip out of the dispenser. Conversely, if the
core is too tight, it is very difficult to push the dispenser into
the core and equally as difficult to remove the dispenser when the
film is used up. By using the device of the present invention, by
merely pressing the front end of the split barrel, it allows the
film roll to slip on or off the barrel. When in use, the barrel
springs back and the raised lip prevents the film from slipping off
the barrel.
[0020] It is an object of the present invention for the barrel or
shaft of the device to be split which allows it to be compressed
and easily inserted into the film core. It is an object of the
present invention for the front end of the barrel to have a raised
lip. After the barrel is inserted into the film core, the raised
lip that extends beyond the end of the core prevents the dispenser
from coming out.
[0021] The present invention comprises a 1'' ID core for dispensing
film. This improves the dispensing of film which is commonly done
with standard 3'' ID core dispensers. The use of a 1'' ID core
substantially reduces the OD of the film roll, making it easier and
less cumbersome to use. It is an object of the present invention to
use the device with approximately 1'' to 6'' width films.
[0022] It is an object of the present invention for dispenser to
comprise a knob at the base of the handle to comprise a tapered
screw. When turned clockwise, it extends between two cams located
opposite each other on the interior of the barrel which expands the
barrel against the inside of the core on which the stretch wrap is
wound and provides adjustable and constant tension.
[0023] It is an object of the present invention for the device to
comprise two pieces, one piece being the barrel and handle and a
second piece being a tensioning device. It is an object of the
present invention for the tensioning device to comprise a knob at
the base of the tensioning device and a tapered screw. The
tensioning device is placed inside the barrel. When turned, the
tensioning device extends between two cams located opposite each
other on the interior of the barrel which expands the barrel
against the inside of the core on which the stretch wrap is wound
and provides adjustable and constant tension.
[0024] The present invention relates to a dispenser for dispensing
stretch film having a handle. It is an object of the present
invention for the handle to be molded. It is an object of the
present invention for the dispenser to have a foam sleeve for a
cushion grip which fits over the handle.
[0025] It is an object of the present invention for a small amount
of tension to activate the films holding power.
[0026] It is an object of the present invention for the tension in
the film to be controllable during the wrapping process.
[0027] It is an object of the present invention to provide a
stretch wrap dispenser which has good balance and facilitates the
application of film under substantially uniform tension across the
full width of the film for a uniform wrap.
[0028] It is an object of the present invention to provide a
stretch wrap film dispenser which can be adjusted to accommodate
different widths of film rolls.
[0029] The present invention relates to a method of dispensing
stretch film comprising: compressing a split barrel of a dispenser.
A roll of stretch film is placed over the compressed barrel, and a
raised lip is placed at the end of the roll. Tension against the
inside of the roll is adjusted by expanding and contracting the
barrel against the inside of the roll.
BRIEF DESCRIPTION OF THE DRAWINGS
[0030] FIG. 1 illustrates a dispenser for stretch film having the
stretch film.
[0031] FIG. 2 shows the barrel of the dispenser of the present
invention.
[0032] FIG. 3 shows the tensioning device of the dispenser of the
present invention.
[0033] FIG. 4 shows a top view of the dispenser of the present
invention without the stretch film.
DETAILED DESCRIPTION OF THE INVENTION
[0034] FIG. 1 shows a dispenser 10 for dispensing stretch film 12
having a handle 14. The handle 14 in a preferred embodiment being
molded. In a preferred embodiment, the dispenser 10 has a foam
sleeve for a cushion grip which fits over the handle 14.
[0035] FIG. 2 shows the barrel or shaft 20 of the dispenser 10. The
barrel or shaft 20 of the dispenser 10 is split into two pieces 21
and 23 which allows the barrel 20 to be compressed and easily
inserted into the film core 16. The barrel has located internally
two cams 22 and 24. In a preferred embodiment, the front end of the
barrel 20 has a raised lip 26. After the barrel 20 is inserted into
the film core 16, the raised lip 26 extends beyond the end of the
core 16 and prevents the stretch film 12 from coming out of the
dispenser 10.
[0036] FIG. 3 shows the tensioning device 30 of the dispenser 10 of
the present invention. The tensioning device 30 comprises a knob 32
at the base of the tensioning device 30 and a tapered screw 34. The
tensioning device 30 is placed inside the barrel 20. When turned,
it extends between two cams 22 and 24 located opposite each other
on the interior of the barrel 20 which expands the barrel 20
against the inside of the core 16 on which the stretch wrap 12 is
wound and provides adjustable and constant tension.
[0037] FIG. 4 shows a top view of the dispenser 10 of the present
invention without the stretch film. In this view one can see the
split barrel 21 and 23 and the tensioning device 30.
* * * * *