Bizarre Patents
A banana protective device for storing and transporting a banana carefully.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7261525 | Outlet check valve for fluid bladders A manually operated pump having a pump assembly and a check valve. The pump assembly includes a dome with a fluid inlet. A support plate is sealed to the dome to define a fluid chamber. The support plate includes a fluid outlet. A foam material is positioned in the ... | 08/28/2007 |
| 7121809 | Method of driving pump A pump is provided having a pump chamber that is capable of changing a volume thereof by a diaphragm, an inlet passage permitting an operating fluid to flow into the pump chamber; an outlet passage permitting an operating fluid to flow out from the pump chamber; and... | 10/17/2006 |
| 7059836 | Pump The invention provides a pump which has reduced pressure loss by using fewer mechanical on-off valves, which has increased reliability, which can be used under a high load pressure, which can be driven at a high frequency, and which has good drive efficiency by incr... | 06/13/2006 |
| 7056096 | Pump The invention provides a pump with high driving efficiency in which the number of mechanical switching valves is decreased to reduce pressure loss and increase reliability, and which is ready for high load pressure and high-frequency driving, and which increases the... | 06/06/2006 |
| 7040875 | Refrigerant pump with rotors in bearing A refrigerant pump includes a thin-walled hermetic vessel and a thick-walled hermetic vessel having an end inserted into and secured to an end of the thin-walled hermetic vessel. A stator of an electric motor unit is fitted outside the thin-walled hermetic vessel, w... | 05/09/2006 |
| 7025134 | Surface pulse system for injection wells The present invention relates to petroleum recovery operations, and more particularly, to the use of pulse technology to enhance the effectiveness of waterflooding operations. The systems of the present invention generally comprise an injection means for continually... | 04/11/2006 |
| 6981854 | Small piston pump A small piston pump is disclosed with a housing having a pair of space and connected pistons therein. The housing has a bore with one of the pistons engaging the bore near one end and has a sleeve mounted therein adjacent the other end. The second piston slides in t... | 01/03/2006 |
| 6948920 | Toilet bowl and tank drainage device A hand held an portable pump has a housing with an inlet on the bottom and an outlet on its side. A central tube extends up from the housing and has a bulb attached at its end. An inlet gate is positioned proximate the inlet to operate between a closed position in w... | 09/27/2005 |
| 6716002 | Micro pump The micro pump 100 comprises a first flow pass 115 for changing the flow pass resistance in accordance with the differential pressure, a second flow pass 117 wherein the percentage change in flow pass resistance relative to the differential pres... | 04/06/2004 |
| 6623256 | Pump with inertance value of the entrance passage being smaller than an inertance value of the exit passage Since many valves are used, pressure loss is large, resulting in low reliability of a pump. Even when the period of increasing and decreasing the volume of a pump chamber is long, and a piezoelectric element is used as an actuator that drives a diaphragm,... | 09/23/2003 |
| 6547749 | Body pulsating method and apparatus A vest for a human body has an air core coupled to a pulsator operableto subject the vest to pulses of air which applies and releases high frequency pressure forces to the body. The pulsator has two diaphrams connected to an electric de motor with rotary ... | 04/15/2003 |
| 6312411 | Fluid supplying apparatus A fluid supplying apparatus having a rubber elastic film (11) with fluid contained therein, an upstream tube (30), an intermediate station (40) disposed at a distal end of the upstream tube (30) and a downstream tube (27) connected to the intermediate sta... | 11/06/2001 |
| 6299421 | Oil supply apparatus of linear compressor An oil supply apparatus of a linear compressor including an oil feeder frame having an oil cylinder, an oil suction hole communicated with the oil cylinder and an oil discharge hole; an oil cover combined to the oil feeder frame to cover the oil cylinder ... | 10/09/2001 |
| 6227824 | Fluid pump without non-return valves A fluid pump has a pump body and a displacer which is adapted to be positioned at a first and at a second end position by means of a drive, the displacer and the pump body being implemented such that a pump chamber is defined therebetween, and the pump ch... | 05/08/2001 |
| 6224347 | Low volume, high precision, positive displacement pump A pump (10) includes a motor (11) which rotates a pumping assembly (52) which includes a face plate (54) and a cylinder (56). A piston (67) reciprocates in the cylinder (56) to draw fluid into the cylinder (56) from an intake groove (78) and an intake por... | 05/01/2001 |
| 5895208 | Reciprocating piston machine with capillary passages on valves for pressure relief A reciprocating piston machine (1) has an inlet valve (9) on the suction side and an outlet valve (10) on the delivery side, which valves exhibit a valve body having a valve disc (11, 12) comprising of an elastomer, whereby the compression chamber (6) sea... | 04/20/1999 |
| 5846060 | Reciprocating piston pump with bleed passages A pump which has a piston (30) which is reciprocatingly moved vertically inside a tubular housing (32) to extract fluid from the bottom of a well (29). The piston (30) is attached to a motor (12) for driving it and has a horizontally extending base plate ... | 12/08/1998 |
| 5647731 | Air compressor An air compressor in which oil loss due to the pressure in the cylinder becoming negative during an unload can be prevented, thereby protecting an outlet-side unloader valve. An air leak hole with a specific ventilating resistance is formed between a valv... | 07/15/1997 |
| 5509792 | Electromagnetically driven reciprocating pump with fluted piston A reciprocal type of pump structure wherein a piston has a linear function actuated by a pair of coils energized alternately and includes a plurality of tapered flutes. A check valve in an outlet of the structure which stretches to open said outlet under ... | 04/23/1996 |
| 5020977 | Standing wave compressor A compressor for compression-evaporation cooling systems, which requires no moving parts. A gaseous refrigerant inside a chamber is acoustically compressed and conveyed by means of a standing acoustic wave which is set up in the gaseous refrigerant. This ... | 06/04/1991 |
| 4743169 | Diaphragm-type vacuum pump device A diaphragm-type vacuum pump device which includes a diaphragm, a pumping chamber the volume of which is changed by reciprocating motion of the diaphragm, a check valve for drawing air into the pumping chamber, a check valve for discharging air from the p... | 05/10/1988 |
| 4709304 | Light radiator A light radiator for diffusing and radiating light rays, transmitted through an optical cable or the like, outside of the optical conductor cable, includes a transparent cylinder, an optical conductor for guiding light rays into the cylinder, an optical m... | 11/24/1987 |
| 4627798 | Apparatus for circulating cleaning fluid through a cooling system A single cylinder pump for circulating cleaning fluids through a radiator or like cooling system applies positive and negative pressure to the fluid to create a pulsating agitation of the fluid through the radiator through the use of a thin washer-like pl... | 12/09/1986 |
| 4594058 | Single valve diaphragm pump with decreased sensitivity to ambient conditions A single valve diaphragm pump is disclosed which generally includes: a pump housing, a flexible diaphragm reciprocally movable in the pump housing; an inlet filter means; and, an outlet valve. The flexible diaphragm conforms in shape to a portion of the p... | 06/10/1986 |
| 4561829 | Rotary compressor with tapered valve ports for lubricating pump A horizontal compressor including an electric motor and a compressor element mounted in a case serving concurrently as an oil sump. The compressor element includes a cylinder, a shaft having a crank, a roller fitted to the crank for eccentric rotation alo... | 12/31/1985 |
| 4557677 | Valveless lubricant pump for a lateral rotary compressor A lateral rotary compressor comprises a compressing mechanism including a blade chamber for filling the lubricating oil, and a blade contained in the blade chamber and reciprocatingly movably between the first position where the blade chamber is increased... | 12/10/1985 |
| 4544338 | Oil feeder means for use in a horizontal type rotary compressor A horizontal type rotary compressor including a compression element having a cylinder, a shaft having a crank thereon, a pair of side plates concurrently serving both as bearings of the shaft and as side walls of the cylinder, a roller fitted onto the cra... | 10/01/1985 |
| 4543046 | Rotary compressor A horizontal type rotary compressor includes a lubricant distribution system which does not require a check valve for preventing the return of lubricant from the frictional bearing surfaces to the blade chamber. An eccentric blade within a blade chamber p... | 09/24/1985 |
| 4543047 | Rotary compressor A horizontal type rotary compressor includes a lubricant distribution system which does not require a check valve for preventing the return of lubricant from the frictional bearing surfaces to the blade chamber. An eccentric blade within a blade chamber p... | 09/24/1985 |
| 4538970 | Downstroke lift pump for wells A reciprocating electric motor-pump assembly for wells lifts well fluid on downstroke of the motor-pump assembly, and with the motor above the pump the well fluid is conducted from below the motor to above the motor via a flow passage through the motor ar... | 09/03/1985 |
| 4087214 | Motive fluid supply system for metering valve An air supply system for supplying air to a periodically opened valve comprising a conduit for connecting the valve in continuous communication with a source of air and an expandable air storage chamber connected to the source of air and to the valve.... | 05/02/1978 |
| 4070133 | Pump compressor unit for use with pumping draft beer An air supply unit provides high pressure moisture-free air in the dispensing of beverages. Components are housed in a portable cabinet and include a compressor and an automatic air pressure switch to switch on the compressor and begin air flow when syste... | 01/24/1978 |
