Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7789012 | Valve bonnet assembly An improved bonnet assembly for a weir type or radial style valve, comprising a hollow bonnet housing an actuator assembly comprising an actuator connected to a spindle, the hollow bonnet having a plurality of orifices to allow free entry and exit of a liquid such a... | 09/07/2010 |
| 7343848 | Self-vacuum arrangement for pneumatic equipment A self-vacuum arrangement for pneumatic equipment is provided. A Venturi device having first and second ports and a central tap is provided. A first check valve having a first port operably coupled with the central tap of the Venturi device is configured to prevent ... | 03/18/2008 |
| 7216871 | Non-contacting seal for rotating surfaces A non-contacting seal for sealing in high temperature applications includes at least one segment having an inner pad with a hydrodynamic/hydrostatic lift-off geometry enabling the seal to run in a non-contact mode, and at least one finger spring supported on the pad... | 05/15/2007 |
| 7172028 | Reciprocating slickline pump A reciprocating hydraulic slickline pump for use in a wellbore. The pump comprises a pump member. The pump member is reciprocated axially by slickline in order to form an upstroke and downstroke. The pump is configured such that it pressurizes fluid within a workstr... | 02/06/2007 |
| 6526865 | Weld cylinder According to the present disclosure, a fluid cylinder is provided that is configured to move an object between first and second positions. The fluid cylinder includes a cylinder housing and a shaft configured to move between extended and retracted positio... | 03/04/2003 |
| 6176171 | Fuel injection pump with precipitate inhibiting features A fuel injection pump with precipitate inhibiting features includes a pump body that defines a flushing fluid inlet and a flushing fluid outlet that open into a plunger bore. A plunger is positioned in the plunger bore and is moveable between a retracted ... | 01/23/2001 |
| 5964408 | Irrigation sprinkler and valve with flushing system An improved pop-up irrigation sprinkler with integral flow control valve, and an improved separate flow control valve, defined by a dual flowpath for pilot flow within the flow control valve; a stem-flushing feature using an interrupter disc (54) mounted ... | 10/12/1999 |
| 5947702 | High precision fluid pump with separating diaphragm and gaseous purging means on both sides of the diaphragm A high precision fluid pump for accurately delivering desired amounts of processing fluids, particularly for use in semiconductor processing and semiconductor processors. The fluid is dispensed by a piston driven by a stepper motor with precise electronic... | 09/07/1999 |
| 5778759 | Self-aligning piston rod A piston pump having structure to maintain substantially parallel alignment of a piston rod and a crosshead extension as a crosshead slide undergoes wear. The structure includes a slot defined by the end of the piston rod for receiving a male pilot of the... | 07/14/1998 |
| 5479847 | Dual-piston pump apparatus A dual-piston pump apparatus includes a pair of reciprocating sleeves within which a pair of reciprocating pistons are disposed. The pistons and sleeves are each supported on a frame for independent reciprocating movement along a line angled relative to h... | 01/02/1996 |
| 5431957 | Apparatus and method for protection of pumps used for delivery of air- or moisture-sensitive liquids A means and method for protecting the moving parts of a pump that is used to pump air- or moisture-sensitive liquids, comprising blanketing the wetted parts of the pump with an inert medium and/or admixing the process liquid with a low vapor pressure liqu... | 07/11/1995 |
| 5337651 | Apparatus and method for protection of pumps used for delivery of air- or moisture-sensitive liquids A means and method for protecting the moving parts of a pump that is used to pump air- or moisture-sensitive liquids, comprising blanketing the wetted parts of the pump with an inert medium and/or admixing the process liquid with a low vapor pressure liqu... | 08/16/1994 |
| 5320026 | Spring brake actuator with dust guard A dust guard is provided for a brake actuating mechanism comprising a housing having first and second end walls, an elastomeric diaphragm suspended within the housing, a brake actuating rod disposed within the housing for reciprocating movement relative t... | 06/14/1994 |
| 5144882 | Shaft seal system for a piston pump separating impurities A piston pump shaft sealing system is provided which prevents particles released from the shaft seal, as a result of wear from entering and contaminating the fluid being pumped. The system features a permeable, deformable disc disposed between the seal an... | 09/08/1992 |
| 5114314 | Reciprocating type fluid delivery pump A reciprocating type fluid delivery pump has a driving motor, plungers for driving two pump heads, respectively, and a converting mechanism for converting the rotational motion of the driving motor into a reciprocating motion of each plunger. The converti... | 05/19/1992 |
| 4976192 | Reciprocating pump A reciprocating pump comprising a cylinder and a plunger reciprocable in the cylinder, a member at one end of the cylinder having an axial passage in which the plunger is axially slidable, and a seal between the member and the plunger. The pump is charact... | 12/11/1990 |
| 4833976 | Sealing means for a high pressure axial piston pump The axial piston pump is provided with two annular seals mounted in the housing and sealingly engaging the piston to define a sealing fluid zone therebetween. An annular ring is provided between the seals to control the flow of sealing fluid through the f... | 05/30/1989 |
| 4784040 | Control system for expelling liquid from a pneumatic actuator A control system for a pneumatic actuator uses pressurized gases, such as air, as the actuating medium. Such gases and particularly air commonly contain moisture which condenses to form a liquid, such as water, which collects in a closed chamber of an exp... | 11/15/1988 |
| 4772184 | Piston pump for abrasive conveyances The invention relates to reciprocating pumps for liquids and gases, especially fluid-solid dispersions containing abrasives. The cylinder is made from material which is harder than the abrasive particles of the fluid. This cylinder rotates around the pist... | 09/20/1988 |
| 4719844 | Shaft alignment system for pumps A shaft alignment system for pumps which utilizes a clamp for holding a reciprocating shaft to a piston in an abutting relationship. The clamp can be loosened and retightened after the piston, which is attached to the reciprocating shaft, is inserted in a... | 01/19/1988 |
| 4682732 | Sprinkler with improved riser seal A sprinkler including a housing, a riser and a riser seal element is disclosed. The housing has a hollow interior with an upward-inward slanted, conical shaped seal element receiving slot. The riser is mounted in the hollow interior of the housing for rec... | 07/28/1987 |
| 4667748 | Method of driving an element and an hydraulic impactor In an impactor, e.g. a jack hammer, a liquid column is accelerated through an empty barrel 26 and it impacts on a piston surface (34) of the tool (24), e.g. a chisel.... | 05/26/1987 |
| 4644847 | Reduction of failure incidence of metallic diaphragms for compressors In a compressor which includes an upper and lower head portions and an interposed diaphragm, provisions are made for increasing the service life of the diaphragm by reducing the incidence failure of the diaphragm due to fretting products and airborne cont... | 02/24/1987 |
| 4609146 | Sprinkler with improved riser seal A sprinkler including a housing, a riser and a riser seal element is disclosed. The housing has a hollow interior with an upward-inward slanted, conical shaped seal element receiving slot. The riser is mounted in the hollow interior of the housing for rec... | 09/02/1986 |
| 4598630 | Double acting self-flushing pump A double action slurry pump is provided having a shelf-flushing piston assembly mounted in a mating cylinder. The piston assembly includes a first piston having a peripheral sealing means and a reciprocating piston rod for driving the first piston. Second... | 07/08/1986 |
| 4516479 | Pump A pump for pumping fluids which contain a high degree of suspended solid particles comprises a piston provided with a cylindrical sleeve of a hard ceramic material having a hardness of greater than nine on the Mho scale, preferably an aluminum oxide ceram... | 05/14/1985 |
| 4476771 | Self-flushing piston assembly for slurry pump A slurry pump is provided having a self-flushing piston assembly mounted in a mating cylinder. The piston assembly includes a first piston having a peripheral sealing member and a reciprocating piston rod for driving the first piston for pumping action. A... | 10/16/1984 |
| 4453454 | Mud pump liner and piston cleaner In a mud pump liner and piston cleaner a split ring-type tubular reservoir, supplied with fluid under pressure, substantially surrounds the end portion of a liner projecting out of a mud pump cylinder. A plurality of small diameter tubing sections, each c... | 06/12/1984 |
| 4432556 | Piston sealing arrangement for a cryogenic refrigerator A sealing arrangement for a rectilinear reciprocable piston within a cryoic refrigerator comprising a buffer defined by dual O-rings disposed around the circumference of the piston and containing pressurized gas of the same type as the refrigeration gas.... | 02/21/1984 |
| 4345509 | Contaminant trap for fluid operated rotary actuator A rotary actuator (11) having a vane (24) which is pivoted in a chamber (13) by fluid pressure to turn an actuator shaft (18) includes internal sump cavities (41A, 41B) that collect abrasive particles from the fluid and which hold such contaminants away f... | 08/24/1982 |
| 4323003 | Fluid cylinder with replaceable rod seal and guide A fluid pressure operated cylinder having a removable cylinder head insert or "nose" that carries a replaceable piston rod pressure sealing means and a rod guide bearing. The bearing and seal are mounted around the piston rod bore, adjacent an axially inn... | 04/06/1982 |
| 4270440 | High pressure piston and seal In a pump having a cylinder liner, there is a piston therein, a seal around the piston and rear wearband around the piston body to align the piston within the liner. An elastomeric seal ring is in sealing and sliding contact with the liner. A gap filler, ... | 06/02/1981 |
| 4157057 | Single acting piston A single acting pump has a piston with an elastomeric and synthetic fabric seal ring and is provided with means to supply fluid to the piston and passages in the piston for circulating fluid to cool and clean the piston on both the pressure stroke and the... | 06/05/1979 |
| 4138931 | Pump A hydraulic pump is provided which includes a plurality of housings, each of which has an upright cylindrical cavity formed therein, and a plurality of plungers, one for each cavity. The housings are removably mounted on a common support and the plungers ... | 02/13/1979 |
| 4023469 | Piston and piston rod construction for pumps and method of flushing piston-type pumps A piston and piston rod construction for use in a double-acting reciprocating pump, and a method of flushing a piston-type pump. The piston has spaced apart rubbers mounted on a body intermediate its length. The rubbers have confronting lips. Each rubber ... | 05/17/1977 |
