← Back to Patent Explorer
US3331734A Expired / Lapsed US ⏱️ 0.0 years remaining

Paper machine press and felt assembly

Assignee: BC Holding Group Inc
•
Filing: 1965-09-01
•
Granted: 1967-07-18
•
Expires: 1985-09-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Walter E Rojecki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 10:45
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/04; D21F3/06

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 170 words
A PAPER MACHINE PRESS ASSEMBLY COMPRISING A FIRST PRESS ROLL HAVING AN IMPERFORATE SURFACE, AN IMPERFORATE SMALL ROLL OF SUBSTANTIALLY SMALLER DIAMETER THAN SAID PRESS ROLL ARRANGED TO FORM A PRESSURE NIP WITH SAID PRESS ROLL, A SECOND PRESS ROLL OF SUBSTANTIALLY LARGER DIAMETER THAN SAID SMALL ROLL AND POSITIONED IN NIP FORMING RELATION WITH SAID SMALL ROLL ON THE SIDE THEREOF OPPOSITE SAID FIRST PRESS ROLL TO SUPPORT SAID SMALL ROLL IN PRESSURE ENGAGEMENT WITH SAID FIRST PRESS ROLL, MEANS POSITIONING SAID FIRST AND SECOND PRESS ROLLS, WITH THE AXES THEREOF DEFINING A PREDETERMINED PLANE, MEANS FOR DRIVING SAID SECOND PRESS ROLL TO DRIVE SAID SMALL ROLL THROUGH SURFACE ENGAGEMENT THEREWITH, AND ADJUSTABLE MEANS SUPPORTING SAID SMALL ROLL WITH THE AXIS THEREOF IN SLIGHTLY OFFSET RELATION WITH SAID PLANE, ON THE INGOING SIDE OF THE NIP THEREOF WITH SAID SECOND PRESS ROLL SUBSTANTIALLY BALANCING THE PRESSURES TENDING TO FORCE SAID SMALL ROLL AWAY FROM SAID PLANE WITH THE TANGENTIAL FORCES TENDING TO DRIVE SAID SMALL ROLL TOWARD SAID PLANE.
Claim 2
Dependent Claim 170 words
A PAPER MACHINE PRESS ASSEMBLY COMPRISING A FIRST PRESS ROLL HAVING AN IMPERFORATE SURFACE, AN IMPERFORATE SMALL ROLL OF SUBSTANTIALLY SMALLER DIAMETER THAN SAID PRESS ROLL ARRANGED TO FORM A PRESSURE NIP WITH SAID PRESS ROLL, A SECOND PRESS ROLL OF SUBSTANTIALLY LARGER DIAMETER THAN SAID SMALL ROLL AND POSITIONED IN NIP FORMING RELATION WITH SAID SMALL ROLL ON THE SIDE THEREOF OPPOSITE SAID FIRST PRESS ROLL TO SUPPORT SAID SMALL ROLL IN PRESSURE ENGAGEMENT WITH SAID FIRST PRESS ROLL, MEANS POSITIONING SAID FIRST AND SECOND PRESS ROLLS, WITH THE AXES THEREOF DEFINING A PREDETERMINED PLANE, MEANS FOR DRIVING SAID SECOND PRESS ROLL TO DRIVE SAID SMALL ROLL THROUGH SURFACE ENGAGEMENT THEREWITH, AND ADJUSTABLE MEANS SUPPORTING SAID SMALL ROLL WITH THE AXIS THEREOF IN SLIGHTLY OFFSET RELATION WITH SAID PLANE, ON THE INGOING SIDE OF THE NIP THEREOF WITH SAID SECOND PRESS ROLL SUBSTANTIALLY BALANCING THE PRESSURES TENDING TO FORCE SAID SMALL ROLL AWAY FROM SAID PLANE WITH THE TANGENTIAL FORCES TENDING TO DRIVE SAID SMALL ROLL TOWARD SAID PLANE.

References Cited (Backward Citations)

US1803926A Cited
DE750222C Cited
US3230138A Cited
US3198695A Cited
US3198697A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-07-17 1971-01-16 1971-07-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-07-17 1975-01-16 1975-07-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-07-17 1979-01-16 1979-07-18 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag