Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7841082 | Non-eccentric devices The present invention is an apparatus that includes a chamber rotor with a chamber and an extension rotor with an extension. The rotors are housed in a rotor case. A pressure cavity is at least transiently formed by the extension rotor and the chamber rotor. The pre... | 11/30/2010 |
| 7739792 | Method of forming controlled thickness resilient material lined stator The present invention relates to a resilient material lined stator and method of forming. A method of forming a resilient material lined stator can include disposing a resilient material tube 400 with a profiled helical inner surface 401 into the bore ... | 06/22/2010 |
| 7354258 | Stator for an eccentric single-rotor screw pump and method for its production Stator for an eccentric single-rotor screw pump has a casing made of steel or the like and a helical elastomer lining. Stator and a method for its production are described which can also be made with larger lengths at low production costs. Stator is composed of at l... | 04/08/2008 |
| 7220111 | Hydraulic pump A fluid pump includes a housing having a lateral wall and an end wall, an insert located in the housing surrounded by the lateral wall and including a body having a central aperture and inlet and outlet fluid channels. A seal, located between the end wall and the in... | 05/22/2007 |
| 7216407 | Apparatus and method for processing screw rotor and cutting bit A method for processing a screw rotor includes a step of rotating a blade holder 2 while shifting the blade holder 2 in X-axis, Y-axis, and Z-axis directions to form a groove on the outer surface of a rotating cylindrical workpiece 1 with a tool... | 05/15/2007 |
| 7192260 | Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining Electrochemical machining is used to generate the helical lobe profiles of the stator of a progressive cavity pump or motor. A thin, elastomeric liner, of uniform thickness is bonded either to the interior of the stator, or to the exterior of the rotor. Where the el... | 03/20/2007 |
| 7188601 | Oil pump for engine using gerotors having fully filtered oil flow The oil pump has a cam support plate attached to the engine block. The support plate has a pressure relief valve. An oil pump body assembly has a pair of gerotors on each side. The gerotors are attached to and driven by a shaft attached to the rear cam. ... | 03/13/2007 |
| 7156624 | Compressor sound suppression A compressor has a housing. One or more working elements cooperate with the housing to define a compression path between suction and discharge locations. An intermediate port is located along the compression path. A branch path extends to the intermediate port. The ... | 01/02/2007 |
| 7140846 | Vacuum pump having main and sub pumps A vacuum pump having a rotary shaft that is rotated by a drive source has a main pump and a sub pump. The main pump includes a pump chamber and a gas transferring body that is located in the pump chamber. The main pump is driven by the drive source through the rotar... | 11/28/2006 |
| 6996905 | Method of making gear pump An improved high pressure intermeshing gear pump that achieves high efficiency and a low cost by forming the pumping cavity such that no fillets exist at the corners permitting closed fits without utilizing bearing end plates. In addition an improved coupling betwee... | 02/14/2006 |
| 6973707 | Method of removing stators from tubular stator housings A method of removing stators from tubular stator housings involving subjecting a tubular stator housing having an interior surface to which a worn stator is adhered by adhesive to cryogenic refrigeration until the stator shrinks and pulls away from the interior surf... | 12/13/2005 |
| 6622381 | Method of manipulating a pump A method for removing a stator tube from a position about a rotor of a progressing cavity pump is provided. The apparatus includes an actuator assembly having a base and a piston which is longitudinally displaceable relative to the base, and a pusher rod.... | 09/23/2003 |
| 6592348 | Lubricant pump and method of producing A rotary type lubrication pump for a vehicle transfer case and a method of producing the lubrication pump, the lubrication pump having an inner gear and an outer gear produced by molding a synthetic polymer, and a pump body and a pump cover produced by st... | 07/15/2003 |
| 6568076 | Method of making an internally profiled stator tube A method of manufacturing a thick walled Moineau-style stator entails drawing a thick walled tube through rotatable internal and external dies to form a helical outer profile including crests and through on the tube. The tube initially has one end with a ... | 05/27/2003 |
| 6551083 | Micromotor and micropump The invention concerns a micropump for the substantially continuous delivery of a mass flow, the micropump having a sleeve axis and an offset axis of rotation. An internal rotor meshes with an external rotor in a sleeve and at least one outlet-side pressu... | 04/22/2003 |
| 6543132 | Methods of making mud motors The present invention provides methods of forming mud motors. In one method, rollers are urgingly stroked against a tubular member having a mandrel therein that has an outer profile which is the inverse of the desired profile of the stator. In another met... | 04/08/2003 |
| 6506038 | Wear-preventing and positioning device for a screw compressor A screw compressor includes a suction end, a discharge end, first and second rotors mounted for rotation between the suction end and the discharge end, and a discharge housing at the discharge end. The discharge housing surrounds a portion of the first an... | 01/14/2003 |
| 6494699 | Axial unloading lift valve for a compressor and method of making the same A screw compressor having an unloader valve with a movable valve member, the unloader valve being capable of indicating when the valve member is installed incorrectly. The valve member is manufactured such that if it is installed incorrectly it provides a... | 12/17/2002 |
| 6332271 | Method for making rotors A method for making rotors for screw-type machines with a plunge-cut turning method in which an approximately rectangular groove is formed approximately at a center of a work piece with trilateral machining, a groove is cut radially deeper by trilateral m... | 12/25/2001 |
| 6314642 | Method of making an internal gear pump An improved internal gear pump design is provided whereby the head plate includes a groove located vertically above the crescent for providing improved axial feed to the roots or innermost spaces between the idler teeth. The design of the pump also includ... | 11/13/2001 |
| 6296461 | Plural screw positive displacement machines Helical intermeshing main and gate rotors (1, 2) are mounted for rotation about their axes in respective intersecting bores in a housing. The profiles of the rotors as seen in cross section are generated by the same rack formation. The high pressure flank... | 10/02/2001 |
| 6241494 | Non-elastomeric stator and downhole drilling motors incorporating same A drilling motor includes a non-elastomeric stator and rotor which are dimensioned for negative or zero interference. The amount of negative interference between the rotor and the stator is determined by the largest solid particle expected to pass through... | 06/05/2001 |
| 6227833 | Fluid machine having cooperating displacement elements and a housing partially covering the displacement elements There is disclosed a hydraulic or pneumatic machine having a first displacement element (8) that is rotatable about an axis of rotation connected to a shaft (10) so as to rotate therewith, which shaft is mounted rotatably in a housing (2), and co-operates... | 05/08/2001 |
| 6186757 | Internal-gear machine An internal-gear machine has a casing and a running assembly accommodated in the casing and comprising a rotatably mounted pinion and an internally toothed annular gear meshing with the pinion. The annular gear is widened at its outer periphery to form a ... | 02/13/2001 |
| 6164945 | Vacuum pump rotor and method of manufacturing the same A rotor has an interior free from invasion of water and is resistant to deformation from applied stresses normally encountered during the operation of a vacuum pump. The rotor comprises a rotor shell formed to conform to an outline of lobes and side-plate... | 12/26/2000 |
| 6162032 | Elastomeric stator for eccentric spiral pumps An elastomeric stator for an eccentric spiral pump is provided. The stator has a lining that is made of elastomeric material and has a hollow chamber that serves for accommodating a rotor. The hollow chamber has a double or multiple spiral configuration. ... | 12/19/2000 |
| 6158988 | Method of producing elastomeric stators for eccentric spiral pumps The method of producing an elastomeric stator, and a stator produced by such method are provided. On its outside, the stator has a metallic spiral body, the shape of which corresponds to that of a hollow pump chamber. Elastomeric material is injected into... | 12/12/2000 |
| 6122824 | Method for manufacturing fluid compression/compressor rotor Fluid compressor or expander having a main rotor with discrete arched-helical flutes that have ruled surface roots that match the predominantly planar tips of the teeth of the associated gate rotors and provide effective fluid sealing as the gate rotor te... | 09/26/2000 |
| 6098266 | Method for the production of rotors for screw-type compressors The invention is directed to a method for the production of rotors (10) for screw-type compressors (16) and to rotors (10) to be produced according to said method. To allow the use of a straightforward manufacturing method for the production of rotors (10... | 08/08/2000 |
| 6095781 | Timed element, high pressure, industrial rotary lobe pump A dual shaft, timed element high pressure industrial rotary lobe pump is provided. Lubricated sleeve bearings are located adjacent to the pumping elements. If the sleeve bearings are disposed on both opposing sides of the pumping elements, the lobe pump o... | 08/01/2000 |
| 6092283 | Method and apparatus for producing a gear pump A method is provided for producing a gear pump/motor in a low cost and efficient manner that can effectively operate in air entrained oil without emitting undesirable noises. This is accomplished by providing bleed slots in a housing adjacent an outlet pa... | 07/25/2000 |
| 5997268 | Positive displacement hydraulic machine having a recess receiving a spigot for sealing A pressure fluid apparatus includes first and second parts which are adapted to be secured together. A first sealing surface of the first part forms a seal with a corresponding second sealing surface of the second part. The first sealing surface includes ... | 12/07/1999 |
| 5993183 | Gear coatings for rotary gear pumps Gears for pumping non-lubricating fluids at high pressure are provided which include special coatings. One of the gears is coated with a combination of nickel and polytetrafluoroethylene; the other gear is coated with a combination of carbon and tungsten ... | 11/30/1999 |
| 5970611 | Method for processing a rotor used for a super charger In a method for processing a rotor used for a supercharger and the like, a slanted rolling machine is used having rolls designed such that the rolls are arranged about a pass line along which a material to be molded advances. Each roll is of corn shape an... | 10/26/1999 |
| 5910001 | Method for adjusting engaged clearance between rotors of screw compressor and apparatus therefor A method of adjusting the engaged clearance between rotors of a screw compressor which has a male rotor and a female rotor inside a casing, both of the rotors being rotated while maintaining a required very small clearance using timing gears fixed individ... | 06/08/1999 |
| 5895210 | Turbo machine rotor made of sheet metal A rotor with lobes for use in a turbomachine having a rotation shaft is disclosed. The rotor comprises a rotor shell having a shell member, which is made of a sheet strip metal and having profile curvatures to conform to a required shape of the lobe of th... | 04/20/1999 |
| 5832604 | Method of manufacturing segmented stators for helical gear pumps and motors The stator for a helical gear device is formed of a plurality of duplicate disks. The disks each include a convoluted cavity having equally spaced symmetrically radially extending lobes for receiving the convex lobes of the rotor. The disks are assembled ... | 11/10/1998 |
| 5806182 | Method of processing screw rotor A cast screw rotor has an opened lightening or reduced weight hole formed inside each thread portion. The opened hole is formed along torsion of the thread portion, and a shaft is inserted into an axial hole. The screw rotor is manufactured by a method in... | 09/15/1998 |
| 5800151 | Screw rotor and method of generating tooth profile therefor The transverse tooth profile of a screw rotor which meshes with a companion screw rotor is defined by a tooth root circular arc, an outer circumferential circular arc, and two curves interconnecting the tooth root circular arc and the outer circumferentia... | 09/01/1998 |
| 5772417 | Gear pump for conveying viscous fluid media and method of making same A gear pump for conveying fluid media, particularly viscous media, has tube or collar-type sections on the suction side and/or delivery side for connecting the pump in a weldable manner with additional system components.... | 06/30/1998 |
