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US3657974A Expired / Lapsed US ⏱️ 0.0 years remaining

Flattening and take-away device for blown tubing

Assignee: Windmoeller and Hoelscher KG
•
Filing: 1970-05-28
•
Granted: 1972-04-25
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Expires: 1990-05-28
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Abstract

Abstract The device serves for flattening and taking away blown tubing, which has been made from plastics material with the aid of a stationary blow head for tubing. The flattening plates and the take-away rolls perform a rotational oscillation about the axis of the incoming tubing. The take-away rolls are succeeded by a pair of deflecting rolls, which have axes of rotation that are parallel to the axis of rotation of the take-away device. The flattened tubing is fed from the take-away rolls to the pair of deflecting rolls around a deflecting rod, which rotates with the take-away rolls about the axis of rotation of the take-away device and which extends at an angle of 45* to the axis of the tubing. Stationary guide elements for the tubing succeed the pair of deflecting rolls. The deflecting rod is disposed directly over the take-away rolls. The pair of deflecting rolls are mounted on the oscillating take-away device and disposed laterally beside the deflecting rod.

Inventors

  • 👤 Winfried Hedrich
  • 👤 Hartmut Upmeier

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 23:34
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/001; B29C48/0018; B29C48/0019; B29C48/09; B29C48/10

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 135 words
A flattening and take-away apparatus for blown tubing of plastic material comprising a stationary blow head, a rotatable frame arranged downstream of said blow head, means to reversibly rotate said frame about an axis thereof, means secured to said frame for flattening said tubing, take-away rolls for said flattened tubing secured to said frame downstream of said flattening means, a deflecting rod secured to said frame immediately downstream of said take-away rolls at an angle of 45* to the axis of said flattened tubing, a pair of deflecting rolls secured to said frame adjacent to and laterally of said deflecting rod, said pair of deflecting rolls having axes of rotation parallel to the axis of rotation of said frame, and a plurality of stationary guide means for the flattened tubing located downstream of said frame.
Claim 2
Dependent Claim 135 words
A flattening and take-away apparatus for blown tubing of plastic material comprising a stationary blow head, a rotatable frame arranged downstream of said blow head, means to reversibly rotate said frame about an axis thereof, means secured to said frame for flattening said tubing, take-away rolls for said flattened tubing secured to said frame downstream of said flattening means, a deflecting rod secured to said frame immediately downstream of said take-away rolls at an angle of 45* to the axis of said flattened tubing, a pair of deflecting rolls secured to said frame adjacent to and laterally of said deflecting rod, said pair of deflecting rolls having axes of rotation parallel to the axis of rotation of said frame, and a plurality of stationary guide means for the flattened tubing located downstream of said frame.
Claim 3
Dependent Claim 36 words
Apparatus according to claim 1, further comprising a withholding roll rotatably mounted on said frame and disposed adjacent to and laterally of said deflecting rod at the other side thereof from said pair of deflecting rolls.
Claim 4
Dependent Claim 42 words
Apparatus according to claim 1 further comprising a windup assemblage and a slip coupling in operative relationship for driving said windup assemblage, wherein the tubing is guided from said pair of deflecting rolls directly to said stationary guide means for the tubing.
Claim 5
Dependent Claim 73 words
Apparatus according to claim 1, further comprising two levers pivotally interconnected at one of their ends, the other end of one of said levers being pivoted to said frame adjacent to said pair of deflecting rolls, the other end of the other one of said levers being pivoted to said stationary guide means, and an additional deflecting roll mounted to said interconnected ends of said levers parallel to said pair of deflecting rolls.

References Cited (Backward Citations)

US3161942A Cited
US3337107A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-04-25 1975-10-25 1976-04-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-04-25 1979-10-25 1980-04-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-04-25 1983-10-25 1984-04-25 $7700.00 Window Closed / Lapsed

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