1
Spillmann Werner, Christ Alfred, Lehmann Rolf, Muehle Erwin: Controlled deflection roll. Escher Wyss, Dodge Austin P, Ostmann Robert A, April 9, 1974: US3802044 (89 worldwide citation)

Roll with bending compensation, for pressure rolling of paper webs, having a rotatable shell, a stationary shaft and at least one pressure element arranged between shell and yoke; a hydrostatic bearing chamber between shell and pressure element, and a servomotor pressure chamber between pressure ele ...


2
Bosshard Ulrich Walter, Kupper Arthur Kurt, Lohr Manfred: Method and apparatus for the heat treatment of a material in powder form. Holderbank Management & Consulting, Ostmann Robert A, September 9, 1975: US3904353 (29 worldwide citation)

The disclosure concerns methods and apparatus for heat treating powdered material wherein the material undergoes an endothermic reaction and is calcined. The material is sintered in the combustion zone of a furnace after preheating by the furnace exhaust gases in open heat exchange relation. Preheat ...


3
Holik Herbert, Muehle Erwin: Drier section. Escher Wyss GmbM, Dodge Austin P, Ostmann Robert A, June 18, 1974: US3816941 (28 worldwide citation)

Drier section for drying a material web, having two superimposed rows of cylinders; said material web travelling alternating from row to row, partially wrapping said cylinders; each two of said cylinders, following one another in the direction of travel of said material web being partially wrapped b ...


4
Decker III Charles R, Harris Gregory K: Sports racket. Dodge Austin P, Ostmann Robert A, May 14, 1974: US3810620 (15 worldwide citation)

A frame for a sports racket comprising a pair of adhesively united metallic stampings and a handle for same. Each stamping is made from a metallic blank initially shaped similarly to the outline of the finished frame. Each blank is stamped to form a channel around its periphery. The channels in the ...


5
Kappeler Peter, Uhlig Klaus: Conduit elbow. Brown Boveri Sulzer Turbomaschinen Aktiengesellschaft, Ostmann Robert A, March 11, 1975: US3870346 (13 worldwide citation)

An elbow section for an insulated conduit comprising an external pipe, an internal pipe, and an insulating layer between the two pipes; a tension strip is looped about the internal pipe and secured to the external pipe as a support for accepting the forces of the flowing medium which act substantial ...


6
Dolder Guido, Schmalzi Alfred: Butterfly valve. Escher Wyss, Ostmann Robert A, Dodge Austin P, February 26, 1974: US3794288 (12 worldwide citation)

Butterfly valve for ducts of hydroelectric power stations, with a web in said duct, extending transversely of said duct and being rigidly secured to said duct, and a flap pivotably mounted on said web; a drive mechanism comprising a servo-motor and first connecting means between said flap and said s ...


7
Arledter Hanns F: Twin wire paper making method in which controlled dewatering in tapering gap causes suspension to move at speed of wires. Ostmann Robert A, November 12, 1974: US3847731 (8 worldwide citation)

Paper making method in which turbulent suspension under pressure is introduced to a tapering gap between a pair of traveling wires at the speed of the wires, and is dewatered therein by suction applied in a series of zones along the wires in such controlled manner that the quantity of liquid in the ...


8
Holik Herbert, Mueller Karl: Flotation device for a fibrous suspension. Escher Wyss, Ostmann Robert A, February 11, 1975: US3865719 (7 worldwide citation)

A flotation device for the purification of a suspension of fibrous material by flotation suitable for the paper industry, more especially for the deinking of a paper stock suspension is disclosed. In a container which has inlet and outlet apertures and inlet and outlet conduits for the suspension, t ...


9
Schneider August Johannes: Decanter. Escher Wyss, Ostmann Robert A, April 22, 1975: US3879296 (7 worldwide citation)

A decanter for clarifying a sludge and composed of a plurality of superimposed separating chambers connected in parallel; a sediment zone and a clear liquid zone being formed from a sludge zone which begins on the entry side section in each separating chamber; for carrying the clear liquid out of ea ...


10
Haller Walter: Foundry mixing machine. Escher Wyss, Ostmann Robert A, December 30, 1975: US3929320 (7 worldwide citation)

A foundry mixing machine for preparing a mixture of sand and an admixture is disclosed; the machine has an inlet for the sand, followed by an annular slot for the sand, then an annular admixing space and an outlet for the mixture; a feeding device for the admixture is disposed on the admixing space ...