← Back to Patent Explorer
US3438852A Expired / Lapsed US ⏱️ 0.0 years remaining

Web pick-up for two wire forming paper machine

Assignee: Beloit Corp
•
Filing: 1965-10-28
•
Granted: 1969-04-15
•
Expires: 1985-10-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Donald A Ely Sr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 00:16
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/003

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 210 words
A TWO WIRE FORMING PAPER MACHINE COMPRISING IN COMBINATION, UPPER AND LOWER FORMING WIRES DEFINING A HORIZONTAL WEB FORMING RUN BETWEEN THEM, A PULP DELIVERING MEANS AT THE FORMING END OF THE WIRES FOR PLACING A LAYER OF STOCK BETWEEN THE WIRES TO FORM A WEB, DEWATERING MEANS WITHINEACH OF SAID WIRES FOR REMOVING WATE FROM THE WEB THROUGH EACH OF THE WIRES, MEANS SUPPORTING THE WIRES INCLUDING COUCH ROLLS AT THE END OF THE DEWATERING RUN OF THE WIRES, SAID COUCH ROLL FOR SAID UPPER WIRE HAVING A SUCTION GLAND WHICH CAUSES THE WEB TO FOLLOW THE UPPER WIRE UPWARDLY IN A GENERALLY VERTICAL PLANE, A PICK OFF FELT IN AN ANNULAR WEB PICK OFF RELATION WITH THE GENERALLY VERTICAL PLANE OF THE UPPER WIRE BEYOND AND ABOVE THE UPPER WIRE COUCH ROLL, A SUCTION PICK OFF ROLL WITHIN THE FELT ABOVE THE COURCH ROLL HAVING A SUCTION GLAND FACING THE UPPER WIRE AND FORMING A PICK OFF NIP WITH THE UPPER WIRE, AND A PRESSS ROLL COUPLE IN NIP DEFINING RELATION WITH THE FELT PASSING HORIZONTALLY THEREBETWEEN HAVING A LOWER WATER RECEIVING ROLL ENGAGING THE FELT SO THAT THE WEB IS CARRIED ON THE UPPER SURFACE OF THE FELT AND ENGAGES THE UPPER ROLL OF TH PRESS COUPLE.
Claim 2
Dependent Claim 210 words
A TWO WIRE FORMING PAPER MACHINE COMPRISING IN COMBINATION, UPPER AND LOWER FORMING WIRES DEFINING A HORIZONTAL WEB FORMING RUN BETWEEN THEM, A PULP DELIVERING MEANS AT THE FORMING END OF THE WIRES FOR PLACING A LAYER OF STOCK BETWEEN THE WIRES TO FORM A WEB, DEWATERING MEANS WITHINEACH OF SAID WIRES FOR REMOVING WATE FROM THE WEB THROUGH EACH OF THE WIRES, MEANS SUPPORTING THE WIRES INCLUDING COUCH ROLLS AT THE END OF THE DEWATERING RUN OF THE WIRES, SAID COUCH ROLL FOR SAID UPPER WIRE HAVING A SUCTION GLAND WHICH CAUSES THE WEB TO FOLLOW THE UPPER WIRE UPWARDLY IN A GENERALLY VERTICAL PLANE, A PICK OFF FELT IN AN ANNULAR WEB PICK OFF RELATION WITH THE GENERALLY VERTICAL PLANE OF THE UPPER WIRE BEYOND AND ABOVE THE UPPER WIRE COUCH ROLL, A SUCTION PICK OFF ROLL WITHIN THE FELT ABOVE THE COURCH ROLL HAVING A SUCTION GLAND FACING THE UPPER WIRE AND FORMING A PICK OFF NIP WITH THE UPPER WIRE, AND A PRESSS ROLL COUPLE IN NIP DEFINING RELATION WITH THE FELT PASSING HORIZONTALLY THEREBETWEEN HAVING A LOWER WATER RECEIVING ROLL ENGAGING THE FELT SO THAT THE WEB IS CARRIED ON THE UPPER SURFACE OF THE FELT AND ENGAGES THE UPPER ROLL OF TH PRESS COUPLE.

References Cited (Backward Citations)

US1722503A Cited
US2821120A Cited
US3198693A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1972-04-14 1972-10-14 1973-04-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1976-04-14 1976-10-14 1977-04-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1980-04-14 1980-10-14 1981-04-15 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag