US 5,203,517 AGranted

Stretch-wrap film dispenser with cylindrical bearings

OwnerJohn C. Parry, Daniel J. Parryinventors

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Abstract

A dispenser for a roll of stretch-wrap film enables the operator to apply variable tension to the end of the unwinding film. The dispenser has a spindle the end of which forms a hub which attaches securely 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, so that the application of radial hand pressure results in frictional braking torque on the unwinding film roll, which enables tension to be applied to the end of the film.

Claims14

Dependent claims

A dispenser for a roll of stretch film having a core, said dispenser comprising

a spindle having a substantially cylindrical shaft and an integral hub at one of the shaft, said hub being adapted for insertion into the core of the film roll and having means thereon for preventing relative rotation between the core and the hub,
a first sleeve bearing mounted coaxially upon the shaft adjacent said hub, and freely rotatable upon the shaft,
a brake drum mounted coaxially upon the shaft with one end longitudinally adjacent the first sleeve bearing,
means constraining the brake drum to rotate in unison with said shaft,
a second sleeve bearing mounted coaxially upon the shaft longitudinally adjacent the other end of said brake drum, said second sleeve bearing being freely rotatable upon the shaft, and
a single flexible hand grip having a tubular portion surrounding both of said sleeve bearings and said brake drum, said grip, when relaxed, being out of contact with said brake drum, but coming into contact with the brake drum, to resist rotation of the spindle, when finger pressure is applied to the grip against the brake drum, but not when finger pressure is applied to the grip only against the sleeve bearings.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/920,523Filed 28 Jul 1992 · continuation
Priority: 3 Jan 1991
Granted: 20 Apr 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B65B 67/085
Wrapping of articles: using hand-held dispensers for stretch films
B65H 23/06
Longitudinally: by retarding devices, e.g. acting on web-roll spindle
B65H 2402/412
Portable or hand-held apparatus: details or the parts to be hold by the user, e.g. handle
B65B
Machines, apparatus or devices for, or methods of, packaging articles or materials