Mobile film wrapping apparatus
US4616474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1985 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Apr 25, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B11/025
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Mobile film wrapping apparatus for unitizing a load is attached to a self propelled vehicle and powered by the vehicle's D.C. power supply. The film wrapping apparatus includes a supporting structure for holding a supply roll of film in a generally vertical orientation. The speed at which the film is dispensed from the supply roll is controlled by an electrically powered adjustable tension brake. The film is wound around a self contained heated roller which facilitates prestretching of the film prior to wrapping. The heated roller contains a supply of heating fluid, a D.C. heating element, a thermostatic switch and an auxiliary rapid heat-up A.C. heating element. Power is provided to the heated roller via a slip ring assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.