William R Tolbert, Joseph Feder, Charles Lewis Jr: Static cell culture maintenance system. Monsanto Company, Scott J Meyer, James W Williams Jr, August 27, 1985: US04537860 (63 worldwide citation)

A method and apparatus for maintaining animal cells in vitro in a substantially arrested state of proliferation with continuous secretion of cell product is disclosed. The cells are retained within a reactor vessel chamber in a semi-rigid matrix having interstices for passage of fluid nutrient mediu ...

Law Edward, Moore James H: Solid waste separating method and classification of material. National Recycling, Jeffers Albert L, Rickert Roger M, February 5, 1974: US3790091 (63 worldwide citation)

A method for separating solid waste material into identifiable classifications by recycling the solid waste material obtained from industrial or domestic source through a number of devices which reduces the solid waste material to a uniform workable particle size; separating the presized particles b ...

James W Derrick, L Charles Matsch: Derrick Manufacturing Corporation, Joseph P Gastel, August 15, 1989: US04857176 (62 worldwide citation)

A molded polyurethane vibratory screen including a body having opposite side edge portions, upper and lower edge portions, an upper surface and a lower surface, a plurality of major and minor substantially parallel ribs extending between the upper and lower edge portions and substantially parallel t ...

John J Picioccio, Steven D Kienitz, Warren R Kitchen, Joseph E Rossi, William C Haase, Allison T Ono, Wayne R Hinkle: Method and apparatus for automatic bulk vending. Mars Incorporated, Fish & Richardson P C, November 11, 1997: US05685435 (58 worldwide citation)

An automatic bulk vending machine is described including specific details as to various aspects of accurate volumetric dispensing, the separation of small broken pieces or fines from the dispensed product, and the easy and sanitary loading of such a machine. Further details as to how to provide a hi ...

William W Derrick, John J Bakula: Screen assembly for vibrating screening machine. Derrick Manufacturing Corporation, Joseph P Gastel, May 23, 1995: US05417858 (58 worldwide citation)

A screen assembly for a vibratory screening machine including a frame in the nature of a plate having spaced apertures therein, spaced frame members on opposite sides of the apertures, a screen formed in an undulating shape having substantially parallel ridges with downwardly sloping sides, troughs ...

Manfred Franz Axel Freissle: Replacable screen with frame. Screenex Wire Weaving Manufacturers, September 14, 1976: US03980555 (58 worldwide citation)

The invention relates to a wear-resistant element in the form of a screen or a lining which has protrusions by means of which the element may be replaceably secured to a support frame. The wear-resistant element is moulded in a synthetic plastics material such as polyurethane.

Gene A Huber: Sweco Incorporated, Lyon & Lyon, April 15, 1986: US04582597 (56 worldwide citation)

A vibratory screen structure which is rectangular in plan employing pretensioned screen panels and a pneumatic tube seal beneath the panels. Restraining members are positioned on two sides of the screen panels to hold the screen frames in position on the pneumatic tubes when sealed. The remaining si ...

John J Bakula: Derrick Manufacturing Corporation, Joseph P Gastel, May 23, 1995: US05417793 (55 worldwide citation)

A screening screen assembly for a vibratory screening machine including an apertured plate, and a bonded subassembly of an undulating support screen and fine screening screen and finer screening screen bonded to each other by a fused plastic grid and bonded to the apertured plate. A method of fabric ...

David B Pall 5 Hickory Hill: Anisometric compressed and bonded multilayer knitted wire mesh composites. Janes & Chapman, John R Janes, Leland L Chapman, Barry G Magidoff, Burton Rodney, Marvin B Rosenberg, September 12, 1972: US3690606 (55 worldwide citation)

Anisometric compressed and bonded knitted wire mesh composites are provided which comprise a plurality of sheets of knitted wire mesh, superimposed at random orientation with respect to each other, compressed or densified to a voids volume within the range from about 10 to about 90 percent, and bond ...

Petros Koutrakis, Peng Yau Wang, Jack Mikhail Wolfson, Constantinos Sioutas: Methods and apparatus for continuous ambient particulate mass monitoring. President and Fellows of Harvard College, Lyon & Lyon, August 3, 1999: US05932795 (54 worldwide citation)

Methods and apparatus for the continuous monitoring of ambient particulate mass in a gas sample encompassing the monitoring of PM.sub.10, (particulate matter greater than 10 .mu.m) and coarse particles (2.5 to 10 .mu.m), the determination of the size distribution of particles, the determination of p ...