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US 4,484,717 AGranted
Stretch-wrap film dispenser with single digit tension control
OwnerJoseph Goldsteininventor
Life of this patent
Estimating the term…
Abstract
Stretch-wrap film on a roll is utilized by manual grasp on handles mounted on each end of the roll and freely rotatable thereon. A brake ring under at least one index finger can be clamped by that finger onto the spindle running with the stretch-wrap film roll, to apply braking and consequent stretch-wrap film tension.
Claims12
A stretch-wrap film dispenser comprising:
- a central spindle for rotating with a roll of stretch-wrap film;
- a substantially rigid tubular handle mounted on the exterior of said spindle and spaced therefrom so that said tubular handle is freely rotable on said spindle, said substantially rigid tubular handle being sufficiently rigid that normal manual grasp of said handle does not cause binding of said handle on said spindle;
- and
- an annular brake ring of resilient material engaged around and spaced from said spindle in its undeflected position and positioned on said spindle axially adjacent said handle, said handle and said brake ring being so dimensioned and said brake ring being formed of sufficiently flexible material that one finger of the user's hand can engage around said brake ring to deflect it into braking engagement with said spindle while some of the user's other fingers engage around said handle adjacent said brake ring so that the user can support and guide a roll of stretch-wrap film and by grasping compression on said brake ring can control unwinding tension.
1 more element
A stretch-wrap film dispenser comprising:
- a core upon which stretch-wrap film can be wound;
- a spindle positioned substantially coaxially with said core at end thereof;
- a substantially rigid tubular handle rotatably mounted on said spindle adjacent each end thereof, each said handle being sufficiently rigid so that in normal grasp, each said handle does not frictionally engage with said spindle;
- an annular brake ring positioned on each end of said spindle adjacent said handles, each said brake ring being made of resilient material, each said brake ring having a bore therethrough sufficiently large that said brake ring does not substantially frictionally engage with said spindle in its undeflected position, each said brake ring being sufficiently resilient so that it can be deflected with the grasp of the dispenser user's finger to engage on said spindle to apply rotative braking drag to said spindle;
- and
- first and second stops positioned on said spindle respectively outboard of said brake rings to hold said brake rings and said handles onto said spindles so that said handles can each be grasped with fingers and said brake rings can each be grasped with a finger for control of stretch-wrap film wrapped on said core and tensioning of the stretch-wrap film by squeezing of said brake rings.
3 more elements
Dependencies are inferred from the claim text.