"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 8167517 | Pump with suction and pressure control for dry particulate material A pump for particulate material includes a pump chamber wherein material flows into the pump chamber under negative pressure and flows out of the pump chamber under positive pressure. A plurality of pinch valves are provided to control flow of material into and out ... | 05/01/2012 |
| 7731456 | Dense phase pump with open loop control A pump for particulate material includes a pump chamber wherein material flows into the pump chamber under negative pressure and flows out of the pump chamber under positive pressure. A plurality of pinch valves are provided to control flow of material into and out ... | 06/08/2010 |
| 7181896 | Multi-rotor fan assembly for a cotton picker A multi-rotor blower fan assembly for a cotton picker utilizes a plurality of separate fan enclosures each containing a fan for supplying an individual air flow to a picker unit of the picker, the fans being mounted on a common shaft for rotation therewith, with a u... | 02/27/2007 |
| 7168228 | Multi-rotor fan assembly for a cotton picker A multi-rotor blower fan assembly for a cotton picker utilizes a plurality of separate fan enclosures each containing a fan for supplying an individual air flow to a picker unit of the picker, the fans being mounted on a common shaft for rotation therewith, with a u... | 01/30/2007 |
| 7153065 | Multi-stage air pressure apparatus and a bi-directional pneumatic conveyance system incorporating such apparatus A multi-stage pressure/vacuum apparatus is disclosed for a bi-directional pneumatic delivery system or the like. The apparatus includes separated turbines or separated sets of turbines that are operated independently of each other to alternatively create pressure an... | 12/26/2006 |
| 7137237 | Forage harvester blower The present invention relates to a forage harvester blower including a blower rotor having a plurality of generally radially extending rotor paddles which operate in a corresponding substantially cylindrical housing, characterised in that said housing is provided wi... | 11/21/2006 |
| 6592302 | Pneumatic transmission system and blower unit therefor A blower unit is provided which is suitable for use in a pneumatic transmission system. The blower unit includes a housing having at least two inlet/outlet openings through which air can flow. Disposed within the housing are one or more blower motors, eac... | 07/15/2003 |
| 6142714 | Particulate material accelerator conveyor A particulate material accelerator conveyor includes a housing having a wall with openings therein for an air inlet, a particular material inlet, and a mixture outlet; a feed auger rotatably mounted in the housing and in fluid communication with the parti... | 11/07/2000 |
| 5363778 | High efficiency exhauster for a solid fuel pulverizing and firing system A high efficiency exhauster which is capable of attaining operating efficiencies of up to 70% when employed in a solid fuel pulverizer firing system that includes a pulverizer which is operative to effect the pulverization therewithin of the solid fuel su... | 11/15/1994 |
| 5190140 | Material handling apparatus An impeller assembly having a housing supporting a rotatable impeller. The housing has a bottom entrance opening and a top exit opening separated by a curved back wall. A liner of low friction and abrasion resistant plastic material located adjacent a por... | 03/02/1993 |
| 5147030 | Impeller assembly An impeller assembly having a housing supporting a rotatable impeller. The housing has a bottom entrance opening and a top exit opening separated by a curved back wall. A liner of low friction and abrasion resistant plastic material located adjacent a por... | 09/15/1992 |
| 5035317 | Impeller assembly with adjustable impeller An impeller assembly having a housing supporting a rotatable impeller. The housing has a bottom entrance opening and a top exit opening separated by a curved back wall. A liner of low friction and abrasive resistant plastic material covers the inside of t... | 07/30/1991 |
| 4974998 | Wear-resistant centrifugal solids pump lining An abrasion-resistant liner for centrifugal solids type pumps comprises a plurality of hard metal segments attached to the inner circumferential wall of a conventional pump in spaced apart condition thereabout. The open spaces thus formed between each adj... | 12/04/1990 |
| 4964502 | Impeller assembly An impeller assembly having a housing supporting a rotatable impeller. The housing has a bottom entrance opening and a top exit opening separated by a curved back wall. A liner of low friction and abrasive resistant plastic material covers the inside of t... | 10/23/1990 |
| 4930944 | Blower with energy absorbing housing A blower for conveying material includes a housing and a spout. The housing has a front wall, a rear wall and an arcuate side wall extending between the front and rear walls. A plurality of arms with paddles mounted thereon are rotatable within the housin... | 06/05/1990 |
| 4595318 | Forage blower having replaceable wear liner A forage blower having an upwardly extending, tangential blower outlet transition member which is hinged along one of its sides so as to be moved to thereby expose the inside of the blower housing. The blower housing includes a two-portion rim sheet. A we... | 06/17/1986 |
| 4265592 | Centrifugal fan The centrifugal fan comprises a casing having a cylindrical jacket with a tangentially directed outlet duct and lateral walls, one of the walls being formed with an axially directed inlet duct partially projecting into the casing, an impeller wheel suppor... | 05/05/1981 |
| 4239422 | Flushing fluid for centrifugal pumps used in the pipelining of slurries In methods for transporting an aqueous slurry of particulate solids in a pipeline wherein the aqueous slurry has an effective viscosity greater than water and is pumped through the pipeline by at least one centrifugal pump wherein a flushing fluid is used... | 12/16/1980 |
| 4174001 | Fan housing clean out apparatus A fan housing through which mire is drawn includes a plurality of rods connected around and inside the periphery of the housing and a belting placed thereover, ends of the belting extending through a side opening in the housing and connected to a rocker a... | 11/13/1979 |