US4807427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stretch wrapping roping apparatus
Assignee: Liberty Industries Inc
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Filing: 1988-04-21
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Granted: 1989-02-28
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Expires: 2008-04-21
Abstract
Abstract An improvement for use with a stretch wrapping apparatus that applies stretchable plastic film to a basiloid container type load. The improvement comprises a roping device that gathers the plastic film into an elongated continuous band engageable on the basiloid container in the required configuration.
Inventors
- 👤 Larry L. Casteel
- 👤 Robert L. Bowlin, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:12
CPC Classifications
B; B65; B65B; B65B11/00; B65B11/006; B65B11/04; B65B11/045
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
140 words
A film rope forming apparatus for use with a stretch wrapping machine comprises a pair of spaced vertically aligned support angles secured to said stretch wrap machine, a pair of control drive cylinders positioned between said respective support angles, a rope forming and gathering spool movably positioned on each of said drive cylinders for engaging opposite longitudinal edges of the film, guide means for supplying pre-stretch wrapping film to said rope gathering spools, secondary guide means to engage said pre-stretch wrapping film exiting said rope gathering spools, means for controlling a relative position of said rope gathering spools to one another, a package rotatably positioned on a turntable aligned for engagement of said prestretch wrapping film, means for controlling the rate of supply of said pre-stretch wrapping material and rate and count of rotation of said package on said turntable.
Claim 2
Dependent Claim
140 words
A film rope forming apparatus for use with a stretch wrapping machine comprises a pair of spaced vertically aligned support angles secured to said stretch wrap machine, a pair of control drive cylinders positioned between said respective support angles, a rope forming and gathering spool movably positioned on each of said drive cylinders for engaging opposite longitudinal edges of the film, guide means for supplying pre-stretch wrapping film to said rope gathering spools, secondary guide means to engage said pre-stretch wrapping film exiting said rope gathering spools, means for controlling a relative position of said rope gathering spools to one another, a package rotatably positioned on a turntable aligned for engagement of said prestretch wrapping film, means for controlling the rate of supply of said pre-stretch wrapping material and rate and count of rotation of said package on said turntable.
Claim 3
Dependent Claim
30 words
The film rope forming apparatus of claim 1 wherein said guide means for supplying pre-stretch wrapping film to said rope gathering spool comprises a pair of oppositely disposed dispenser rollers.
Claim 4
Dependent Claim
29 words
The film rope forming apparatus of claim 1 wherein said secondary guide means to engage said film comprises a single rope guide roller aligned with said rope gathering spools.
Claim 5
Dependent Claim
45 words
The film rope forming apparatus of claim 1 wherein said means for controlling the relative position of said rope gathering spools to one another comprises a source of fluid pressure interconnected to said control drive cylinders via inlet and outlet supply lines and control valves.
Claim 6
Dependent Claim
21 words
The film rope forming apparatus of claim 4 wherein said control valves are activated by a central control and timing device.
Claim 7
Dependent Claim
62 words
The film rope forming apparatus of claim 1 wherein said means for controlling the rate of supply of said pre-stretch wrapping material and the rate of count of rotation of said package on said turntable comprises multiple selective inputs, both auto and manual in a central control and timing device interconnected with said stretch wrap machine and said film rope forming apparatus.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |