Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 6974089 | Injector An injector has two interconnected main sections, a body section and an injector section. The injector section is connected to the body section by way of a form lock, and the connection is produced by a partial material connection. The injector is preferably suitabl... | 12/13/2005 |
| 6099274 | Pump to surface pump A reciprocating pump is provided for pumping subterranean fluids containing fine solids to surface. The pump comprises a pump barrel, piston and piston rod. The piston rod is suspended form reciprocating production tubing. The barrel is anchored in the ca... | 08/08/2000 |
| 5252040 | Fluid transporting apparatus using reflexive hydraulic actuation An apparatus for transporting fluids from a reservoir or source to a remote point of use wherein a multiple-chambered slave unit, when hydraulically actuated through a single conduit communicating with a distant master pressure-generating unit, will upon ... | 10/12/1993 |
| 4781543 | Artificial lift system for oil wells Oil is recovered from underground formations more efficiently by the use of a subsurface power piston that reciprocates a subsurface pump. A series of connecting rods called sucker rods connects the power piston to the subsurface pump. The subsurface powe... | 11/01/1988 |
| 4778355 | Well pump system A downhole well pump system comprises a reciprocating piston pump disposed in a fluid conduit in a wellbore which is filled with a driving fluid having a density preferably greater than the production fluid being pumped. The pump cylinder has a transverse... | 10/18/1988 |
| 4683945 | Above ground--below ground pump apparatus An above ground--below ground pump apparatus for use in pumping underground fluids to the ground surface. The pump apparatus includes an above ground pump for alternately propelling fluid into a well casing surrounding the pump apparatus and discharging u... | 08/04/1987 |
| 4616981 | Pumping apparatus with a down-hale spring loaded piston actuated by fluid pressure A pumping apparatus (10) is disclosed which includes a downhole reservoir unit (20), a pumping unit (18) and a power unit (102). The reservoir unit (20) has a piston assembly (70) with a top piston (72) and a bottom piston (74). A storage chamber (82) is ... | 10/14/1986 |
| 4600368 | Pressure actuated downhole pump The downhole pumping member is reciprocated upwardly by pressurizing the column of oil using an above ground pressure actuator. When this occurs, the pumping member draws a charge of oil from the well. Next the column of oil is depressurized, allowing the... | 07/15/1986 |
| 4553910 | Pulse driven hydraulic pump An apparatus (3) for pumping fluid from a fluid source (5) to a predetermined location (7) remote from the fluid source. The apparatus (3) comprises an hydraulically operated pump (9) having a fluid pumping chamber and means for storing potential energy. ... | 11/19/1985 |
| 4492528 | Pressure balanced liquid elevating mechanism A liquid elevating mechanism for use with pumps of the type which produce cyclic pressure waves for transmission through a liquid column to the liquid elevating mechanism for operation thereof. The liquid elevating mechanism is especially configured to ut... | 01/08/1985 |
| 4462763 | Hydraulic pump jack A hydraulic pump jack for hydraulically actuated well pumps of the general type having pistons driven in one direction to lift liquid up a delivery pipe and having the pistons returned to recharge the said pump, comprising a double-acting surface pump wit... | 07/31/1984 |
| 4460320 | Sonic pressure wave surface operated pump with extensible pumping assembly A sonic pressure wave surface operated pump is provided with a mechanism for controlled movement of a flexible production tube and pumping assembly into and out of contact with a liquid to be pumped and is provided with a sonic pressure wave generator whi... | 07/17/1984 |
| 4398870 | Variable volume sonic pressure wave surface operated pump A variable volume single tube surface operated pump including a piston reciprocally mounted in a cylinder for alternately opening and closing a liquid delivery port formed in the sidewall of the cylinder and for generating a sonic pressure wave by impacti... | 08/16/1983 |
| 4381177 | Sonic pressure wave surface operated pump A single tube surface operated pump including a piston reciprocally mounted in a cylinder for alternately opening and closing a liquid delivery port formed in the side of the cylinder and for generating a sonic pressure wave by impacting a column of liqui... | 04/26/1983 |
| 4341505 | Sonic pressure wave pump for low production wells A sonic pressure wave surface operated pump for use in pumping liquid from low production wells. The pump includes an aboveground generator which produces sonic pressure waves of special character in a liquid column. The sonic pressure waves are transmitt... | 07/27/1982 |
| 4297087 | Apparatus for pumping fluid from a well through a tubing string An apparatus is provided for pumping fluid from a subterranean well through a tubing string. A pressure actuated subsurface pump and a surface unit are in fluid communication with opposite ends of the tubing string. The surface unit cyclically applies pre... | 10/27/1981 |
| 4297088 | Pump assembly comprising gas spring means A pressure actuated, rodless pump for pumping fluid preferably from a well through a tubing string comprises a chamber and a check valved movable piston which define a pump cavity, the chamber having a check valved outlet to the tubing string on the cavit... | 10/27/1981 |
| 4295799 | Sonic pressure wave surface operated pump A single tube surface operated pump including a piston reciprocally mounted in a cylinder for alternately opening and closing a lateral fluid delivery port and for generating a sonic pressure wave by impacting a column of fluid in a metallic tube extendin... | 10/20/1981 |
| 4013385 | Deep well pump system A deep well pump system incorporating a sub-surface pump unit and a surface power unit with a fluid column formed therebetween. The pump unit incorporates a counterbalance means that is specifically illustrated as a collapsible volume chamber operably eng... | 03/22/1977 |
