Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 6464464 | Apparatus and method for controlling a pump system A controller for controlling operating parameters associated with fluid flow, speed or pressure for a centrifugal pump for pumping fluid, wherein at least one sensor is coupled to the pump for generating a signal indicative of a sensed operating condition... | 10/15/2002 |
| 6386487 | Stretching device for electric cables A stretching and connection device for electric cables leading to a submersible electric machine such as a pump or a turbine operating in a tank or shaft (1) and which is surrounded by flowing water during operation, the device including a metal wire (8) ... | 05/14/2002 |
| 6348790 | Motor rotation detector apparatus A leadless motor rotation detector apparatus for determining the direction of shaft rotation of a motor providing a fluctuating magnetic field when rotating includes: at least two sensors separated a predetermined distance from one another. Each sensor se... | 02/19/2002 |
| 6345928 | Clamping spring ring The invention concerns a device for mutual locking of two concentric cylindrical parts such as parts to be used in a submersible pump unit. One outer part (10) and two inner parts (6) and (7) are locked mutually by help of a circumferential locking elemen... | 02/12/2002 |
| 6308595 | Ratcheting spring wrench A device for manually rotating a shaft in a substantially continuous manner, the device having a coiled spring-like body having at least one and a half coils, a pair arms extending laterally from the ends of the body, each arm integral with one of the coi... | 10/30/2001 |
| 6305906 | Device for attaching pump impeller The invention concerns a device for attaching a pump impeller (5) onto a conical shaft end (7). A socket (8) provided with a slot is arranged on the shaft end (7), said socket having an outer diameter corresponding with the the shaft bore in the impeller ... | 10/23/2001 |
| 6305915 | Sealed steady bearing assembly for non-metallic vertical sump and process pumps A bearing assembly for radially supporting a drive shaft of a pump such as a vertical sump and process pump. The bearing assembly has a bearing housing, a bearing having inner and outer surfaces, a bearing housing for holding the bearing, seals disposed i... | 10/23/2001 |
| 6305692 | Seal device A seal device for a submersible machine, such as a pump or a mixer, the seal device being designed as an easily replaceable unit having two mechanical face seals parted by a room for a barrier liquid in which a pump impeller is located. The impeller circu... | 10/23/2001 |
| 6243884 | Toilet seat assembly having an upright position lock A toilet seat assembly comprising a seat for permitting a user to sit over a toilet bowl of a toilet apparatus and a hinge pivotally attaching the seat to the toilet apparatus so that the user can manually pivot the seat relative to the toilet bowl betwee... | 06/12/2001 |
| 6241213 | Diaphragm valve A valve including: a bonnet; a body secured to the bonnet and including at least two ports and at least one weir positioned between the ports; a valve stem being movably coupled with the bonnet, the valve stem including first and second longitudinal ends,... | 06/05/2001 |
| 6237637 | Housing for diverter valve A diverter valve housing including: a body including a base and a plurality of walls cooperatively forming a chamber; a partition within the chamber dividing the chamber into a plurality of compartments; a first port in a first of the walls and accessing ... | 05/29/2001 |
| 6224354 | Leakage storage means for a submersible machine The invention concerns a device for a submersible machine, such as a pump, a turbine or a mixer. The machine includes a driving unit (1) and a hydraulic unit (2) having an impeller connected to the driving unit via a rotary shaft (3). In order to prevent ... | 05/01/2001 |
| 6203282 | Method to control out pumping from a sewage pump station A method to control stops of an intermittently operating electric motor that drives a submersible pump arranged in a pump station for sewage water, wherein starts and stops of the motor depend on the water level in the pump station or on any other electri... | 03/20/2001 |
| 6192912 | Low profile pneumatically activated valve assembly A low profile pneumatically actuated valve assembly including a pneumatic actuator, a bonnet, and an elongated hollow member disposed within the valve actuator, the member having a threaded portion extending from within the actuator, the threaded portion ... | 02/27/2001 |
| 6176680 | Impeller having a hub assembled from a plurality of identical parts The invention concerns an impeller or a propeller for a rotary machine such as a pump, a turbine or a propulsion unit. The impeller comprises a hub (1) and an intermediate part put together by a number of identical hub sections (3) with mounted vanes (4). The ... | 01/23/2001 |
| 6164910 | Housing assembly for a fluid-working device such as a rotary pump Outer ends of inlet and outlet ducts have annular grooves, in lieu of bolt-holed flanges, to receive the inwardly-extending rims of a two-piece, clamping coupler. The coupler joins a conduit, which has a bight, to the inlet duct, in order to change an end... | 12/26/2000 |
| 6142736 | Pump impeller A pump impeller of a centrifugal- or a half axial type meant to pump liquids, mainly sewage water, the pump impeller including a hub provided with one or several vanes, the leading edges of which being strongly swept backwards. The size of the sweep angle... | 11/07/2000 |
| 6139260 | Pump having a pump housing with one or more feeding grooves A pump of a centrifugal- or a half axial type meant for pumping liquids, mainly sewage water, the pump having a pump housing and a pump impeller. The pump impeller includes a hub provided with one or several vanes, the leading edges of which being strongl... | 10/31/2000 |
| 6112767 | Chromatography valve assembly A unitarily formed diverter valve assembly for use in liquid chromatography. The valve assembly comprises a plurality of inlet and outlet ports, diverter valve systems, chambers, and a tortuous network of passageways all of which are arranged to accommoda... | 09/05/2000 |
| 6076812 | Mixing and aeration unit The invention concerns a mixing and aeration unit, especially for waste water treatment and including a submersible axial flow mixer (2), an elongated jet ring (6) with inlet (6a) adjacent the mixer propeller (3) and housing a number of air bubble diffuse... | 06/20/2000 |
| 6073934 | Mechanical seal A sealing arrangement for a pump including an electric motor/generator and a pump housing, said sealing arrangement including: an intermediate barrier liquid chamber; a mechanical face seal positioned between the pump housing and the intermediate barrier ... | 06/13/2000 |
| 6053500 | Seal housing The invention concerns a seal housing for a mechanical seal device. The seal device is arranged within a cavity (6) provided with a spiral notch (11) at its mantle surface for feeding particles in the liquid in a direction away from the seal means (7) and... | 04/25/2000 |
| 6036246 | Device for manipulating submerged-operating units A device (10) for manipulating submerged-operating units (11), such as submersible motor-driven pumps, submersible motor-driven stirrers and the like, has a hoist, by means of which the unit (11) can be brought into a submerged working position and a surf... | 03/14/2000 |
| 5988976 | Scroll, for a fluid-working device Scrolls separable radially, to enable cleaning and polishing of the inner surfaces of the throat area, are disclosed. In one of the embodiments, an inner structure of the scroll intrudes into the throat area for selectively reducing the area, in order tha... | 11/23/1999 |
| 5906223 | Chromatography valve assembly A unitarily formed diverter valve assembly for use in liquid chromatography. The valve assembly comprises a plurality of inlet and outlet ports, diverter valve systems, chambers, and a tortuous network of passageways all of which are arranged to accommoda... | 05/25/1999 |
| 5890512 | CNG regulator High pressure natural gas enters the regulator at the inlet port and is directed through a filter to a passage in the valve body and into the inner chamber of the valve body. The valve means which controls the high pressure gas as it expands past a valve ... | 04/06/1999 |
| 5823751 | Mounting device for submersible electric motor driven pump The invention concerns a device for mounting and keeping together parts in a submersible pump unit. Two groups of screw joints (15) and (16) respectively are alternatively arranged around the periphery of the pump unit, the first group of said joints (15)... | 10/20/1998 |
| 5824980 | Switch-actuating, liquid-level sensor A closed, hollow body has a suspending and tethering, electrical cable joined thereto, the latter conducting electrical power to and from a microswitch confined within the body. A switch actuator is engaged and disengaged by a weight, within the body, the... | 10/20/1998 |
| 5676740 | Means for removing gas from a hydronic system A compact set of circular, wire-formed brushes, within a housing, provides the surfacing upon which, and in which, air bubbles can coalesce for subsequent venting thereof from the housing, and the housing has porting formed therein to accommodate a throug... | 10/14/1997 |
| 5672950 | Voltage, phase and frequency control by miniature inverter system A power supply for a variable speed AC motor includes a waveform generator for generating a periodic pulsed waveform according to a desired motor speed, an adjustable source of DC potential, and an inverter coupled to the waveform generator and to the sou... | 09/30/1997 |
| 5658135 | Waste water pump station A waste water pump station is provided for two submersible pump units which are attached to connection units on the station wall or on a shelf of the wall. The two connection units are attached in a reversed manner with respect to one another making it po... | 08/19/1997 |
| 5649567 | Sealing arrangement, for use with, and in combination with, a steam and fuel oil control and furge valve, and a valve seat therefor A circular body, having a throughgoing orifice, an externally threaded periphery, and a pair of stepped recesses, defines a valve seat for a reciprocating piston. A retaining ring is made fast in one of the recesses, and a seal which contracts upon coolin... | 07/22/1997 |
| 5647666 | Mixer installation device The invention concerns a device for installation of a mixer in a water tank. The mixer is arranged on the inside of a cover (4) in the tank wall (2) which means that only the electric connection means to the motor have to be sealingly drawn through the wa... | 07/15/1997 |
| 5600997 | Carrier frequency sensing of fluids in vessels A carrier frequency based system employs a capacitive probe which is located at a predetermined desired fluid detection level in a fluid containing vessel. The probe forms one plate of a capacitor where the other plate is formed by the fluid in which the ... | 02/11/1997 |
| 5601111 | Method for automatically circulating and then halting circulation of wastewater in a wastewater pump station, and a valving device therefore A valve housing has a chamber formed therewithin, and an inlet and an outlet for accommodating fluid flow through the chamber along a given flow path. The housing further confines a free ball therein, and hydraulic-fluid filed compartments with flexible w... | 02/11/1997 |
| 5577886 | Sealing device for pump impeller The inlet part of the pump housing includes a collar which concentrically surrounds a corresponding opposite collar formed part of the pump impeller inlet, thus permitting any possible leakage flow to be in parallel with the main flow into the impeller an... | 11/26/1996 |
| 5567140 | Keyed insert plate for curved rotary lobe pump chamber walls A rotary lobe pump comprises a pump housing defining an obround pump chamber and a pair of lobe rotors in the pump chamber. The rotors are mounted on rotatable shafts which are connected by timing gears such that the rotors rotate to cause a fluid to disp... | 10/22/1996 |
| 5567118 | Non-lubricated, air-actuated, pump-operating, shuttle valve arrangement, in a reciprocating pump A pilot spool is interposed between the compressed air supply and the diaphragm pump-operating main spool, to insure that, at any one time, only one end of the bore in which the main spool reciprocates receives the compressed air. The pilot spool has an a... | 10/22/1996 |
| 5542817 | Impeller for a rotary pump Notches in the impeller cooperate with balancing holes therein, and a liquid-receiving slot, to direct liquid across the leading edges of impeller vanes to flush away any accreted substances therefrom. In addition, a large diameter deflector coupled to th... | 08/06/1996 |
| 5522631 | Means for, and a method of, handling a submersible equipment which has a lifting bail A length of non-corroding, filamentary material penetrates a lifting bail of the submersible equipment, and one end of the material is coupled to a hook, while the opposite end is pulled to cause the hook to snare the bail. The hook is held in suspension,... | 06/04/1996 |
