Apparatus for wrapping articles in plastic film
Patent 5517807 Issued on May 21, 1996. Estimated Expiration Date: 
January 3, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 3, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2797634 3252408 3583310 Wrapping apparatus Packaging machine Standing tree baler Lower guided lower driven wrapping device Apparatus for wrapping overlapping laps of strip material over a cylindrical object having an axial opening therein Device and method for spreading of a top wrapping film Tree limb folding and tying apparatus InventorAssigneeApplicationNo. 368543 filed on 01/03/1995US Classes:53/556, APPARATUS FOR CONTRACTION OF COVER BY STRETCHING OR SHRINKING53/588Applied by rotation of bandExaminersPrimary: Johnson, LindaAttorney, Agent or FirmInternational ClassesB65B 053/00B65B 011/02 AbstractApparatus for wrapping articles in film material includes a stationary frame supporting a vertically reciprocable frame which in turn supports a rotatable ring member carrying a film carriage assembly by which film is wrapped around an article during rotation of the ring member. The ring is in the form of an outwardly open channel and is supported for rotation relative to the reciprocable frame by wheels on the latter which underlie the upper flange of the channel. The web of the channel is captured between pairs of wheels mounted on the reciprocable frame, and a wheel of one of the pairs is driven to rotate the ring relative to the reciprocable frame. The reciprocable frame is elevated and lowered relative to the stationary frame by a chain drive arrangement, and the stationary and reciprocable frames have interengaging guide components at two diametrically opposed locations.Other References
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