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Class Information
Number: 34/110
Name: Drying and gas or vapor contact with solids > Apparatus > Rotary drums or receptacles > External
Description: Apparatus in which the material is carried on the outside surface of a rotary treating drum.

Sub-classes under this class:

Class Number Class Name Patents
34/122 Gas or vapor circulation for contact with treated material 131
34/124 Heat exchange fluid supply and/or removal 165
34/113 Plural 22
34/111 With belt or felt drier 39
34/123 With belts or felts 135
34/112 With hopper feed or article securing means 8

Patents under this class:
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Patent Number Title Of Patent Date Issued
7802377 Drying cylinder Sep. 28, 2010
7404875 Modified creping adhesive composition and method of use thereof Jul. 29, 2008
6877979 Process and apparatus for indirect-fired heating and drying Apr. 12, 2005
6767454 Apparatus for the treatment of a wiping solution Jul. 27, 2004
6560893 Method and apparatus for heat treating webs May. 13, 2003
6547932 Doctor equipment in connection with a roll/cylinder in a paper/board machine Apr. 15, 2003
6523279 Drying roll for drying a material web Feb. 25, 2003
6442868 Heated drying cylinder Sep. 3, 2002
5891309 Web stabilizing device Apr. 6, 1999
5791065 Gas heated paper dryer Aug. 11, 1998
5776855 Phytosanitary flake compositions Jul. 7, 1998
5571223 Roller apparatus Nov. 5, 1996
5564196 Roll with composite coats Oct. 15, 1996
5553391 Method and apparatus for heat treating webs Sep. 10, 1996
5454939 Wastewater evaporator with rotatable drum Oct. 3, 1995
5353521 Method and apparatus for drying web Oct. 11, 1994
5327661 Method and apparatus for drying web Jul. 12, 1994
5272821 Method and apparatus for drying web Dec. 28, 1993
5235758 Cable drier Aug. 17, 1993
5188788 Process for producing cellulose triacetate films Feb. 23, 1993
5121560 Apparatus and method for cooling a printed web Jun. 16, 1992
5074055 Apparatus for heating a dielectric web or sheet material or for decreasing its moisture content Dec. 24, 1991
4955268 Apparatus containing a work surface heated with a heat carrier medium Sep. 11, 1990
4888095 Method for extracting water from a paper web in a papermaking machine using a ceramic foam member Dec. 19, 1989
4878299 Insulating apparatus for thermally insulating a dryer head Nov. 7, 1989
4831745 Reducing residual moisture on caster rolls May. 23, 1989
4677761 Sieve drum Jul. 7, 1987
4654268 Transparent fire screening panels and their manufacture Mar. 31, 1987
4639292 Drying cylinder for use in paper making Jan. 27, 1987
4639291 Method of controlling moisture profile in paper web in paper drying process and apparatus practicing same Jan. 27, 1987
4538360 Steam heated dryer drum having stationary siphon and spoiler bars Sep. 3, 1985
4520578 Drying cylinder adapted to be heated with steam Jun. 4, 1985
4506459 Fastener assembly for thermal insulation end panel for a paper machine dryer cylinder Mar. 26, 1985
4503626 Arrangement for manufacturing or treating web material Mar. 12, 1985
4486962 Magnetic spoiler bar apparatus Dec. 11, 1984
4464849 Heated can rolls of high thermal efficiency Aug. 14, 1984
4454660 Attachment assembly for mounting an insulating blanket on a dryer cylinder Jun. 19, 1984
4450631 Heated can rolls of high thermal efficiency May. 29, 1984
4419165 Method of making a rotary drum filter and method of making an annular valve housing for such a drum filter Dec. 6, 1983
4399169 Insulative end cap for cylindrical metal drying rollers of paper drying machines, and process for fabrication thereof Aug. 16, 1983
4385453 End panel insulator assembly for temperature controlled rotary cylinder May. 31, 1983
4385454 Insulation blanket and band clamps May. 31, 1983
4385455 Rotary cylinder end wall insulator with seal May. 31, 1983
4383877 Method of making an annular valve housing for a rotary drum filter May. 17, 1983
4379369 Drying cylinder for machines for making paper and a method for making the drying cylinder Apr. 12, 1983
4372055 Thermal insulation end panel mounting bracket assembly for paper machine dryer cylinder Feb. 8, 1983
4348819 Heated can rolls of high thermal efficiency Sep. 14, 1982
4344236 Web drying apparatus Aug. 17, 1982
4321759 Body bolt adapter for heated can rolls of high thermal efficiency Mar. 30, 1982
4320582 Yankee Dryer and method of fabrication Mar. 23, 1982

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