Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7726945 | Industrial ceiling fan A large industrial ceiling fan includes exceptionally long fan blades with blade tips that can be tilted upward to more broadly distribute the air. Such broad distribution might be particularly beneficial in cases where the fan is installed relatively low to avoid o... | 06/01/2010 |
| 7717678 | Spindle with overmolded bushing A propeller assembly is provided for mounting on a propeller shaft of a watercraft. The propeller assembly includes a housing structure having a plurality of blades projecting radially therefrom. A bushing assembly translates rotational movement of the propeller sha... | 05/18/2010 |
| 7708526 | Propeller assembly incorporating spindle with fins and overmolded bushing A propeller assembly is provided for mounting on a rotatable propeller shaft of a watercraft. The propeller assembly includes a housing structure extending along a longitudinal axis. The housing structure includes an outer surface and an inner surface defining a cav... | 05/04/2010 |
| 7365471 | Internal cooling fan with a non-repeating blade configuration An internal cooling fan assembly for use with a claw-pole segment of a rotor assembly is provided that maximizes air flow while providing a reduced sound signature. The fan assembly includes a base portion that contacts the claw-pole segment when the fan assembly is... | 04/29/2008 |
| 7354248 | Elastomeric bearing elements for droop stop mechanisms An elastomeric bearing element having an outer race, an inner race, and at least two elastomeric segments secured between the inner and outer races is provided. The elastomeric segments are spaced from one another by a corresponding number of expansion segments. The... | 04/08/2008 |
| 7296975 | Twist element for a bearingless rotor A twist element for a bearingless rotor is made mostly of composite fiber material and has a cross section with a substantially symmetric, flattened shape that has approximately the contour of a horizontal, central section of a double cone. In addition, a bearingles... | 11/20/2007 |
| 7290985 | Rotary wing aircraft rod end and method of making a helicopter vehicle rod end with a precocked orientation The invention provides a rotary wing aircraft helicopter vehicle rod end and method of making a rod end. The rotary wing aircraft rod end includes a nonelastomeric inner member having an outer bonding surface segment and an axial bore with a center bore axis, a none... | 11/06/2007 |
| 7274121 | Systems and methods for fastening internal cooling fans to claw-pole electro-mechanical machines Methods, systems, and articles of manufacture for fastening internal cooling fans to claw-pole segments are provided. A claw-pole segment suitable for use in a rotor of an electro-mechanical machine is formed. The claw-pole segment may include a base portion, at lea... | 09/25/2007 |
| 7270517 | Turbine blade with vibration damper A blade assembly (10) for a turbine (16) including a vibration damper (12) having a mounting base (38) sealingly disposed at an inlet end (24) of a cooling fluid passageway (22) within the root section (20) of the bla... | 09/18/2007 |
| 7263912 | Flywheel hub-to-rim coupling A flywheel system includes an annular rim mounted for high speed rotation on a flywheel hub. The hub has a radially splined exterior surface facing radially outwards. The rim includes an annular rim liner having an axis of rotation coinciding with the axis of rotati... | 09/04/2007 |
| 7226272 | Hingeless rotor provided with plate-shaped rotor head element and a rotorcraft provided with said rotor The invention relates to a rotor comprising a rotor shaft, a rotation torque transmission element which is mounted thereon and at least one element of the plate-shaped rotor head whose axis of rotation extends therethrough. Said rotor is provided with two groups of ... | 06/05/2007 |
| 7223073 | Boat propeller A boat propeller comprising a central hub member and an inner hub assembly that defines a longitudinally extending bore having an inner surface. The exterior surface of the central hub member is sized and shaped for disposition therein the bore of the inner hub asse... | 05/29/2007 |
| 7192255 | Device for mounting blades on a propeller hub with preloading of the bearings This device for mounting a propeller blade in a hub, of the type in which a blade base is mounted in rotation in a hub housing by means of at least two bearings and where a preloading device permitting axially preloading the two bearings comprises a holding ring mou... | 03/20/2007 |
| 7175392 | Ceiling fan motor with stationary shaft A ceiling fan motor includes a motor housing having an end wall and a side wall; a stator assembly mounted within the housing; a rotor assembly mounted within the housing to rotate relative to the stator assembly; and a fan blade hub adapted to have fan blades mount... | 02/13/2007 |
| 7163377 | Apparatus and method for mounting a ceiling fixture An apparatus and method for mounting a fixture to a ceiling according to which a tubular retainer extends in an opening of an arm and a fastener extends through the retainer and is retained by the retainer. The fastener is adapted to engage a device at the ceiling t... | 01/16/2007 |
| 7140969 | Overmolded yoke assembly A universal joint having a first yoke including a body portion and an overmold portion. The body portion includes a base and a pair of arms that extend from the base. A trunnion assembly is coupled to the first yoke and extends between the arms. A second yoke is cou... | 11/28/2006 |
| 7097169 | Elastomeric bearing with modified cylindrical core An elastomeric bearing having inner and outer races and a core. The core has a plurality of resilient laminae and a plurality of non-resilient laminae interleaved with one another. Each of the lamina has an axially inner cylindrical portion of a given diameter, an a... | 08/29/2006 |
| 7097430 | Injection moulding of plastic fans A method of manufacturing a fan from a plurality of fan blades (12), comprising the steps of: providing an injection moulding tool (30) which defines a fan hub section (14); assembling a predetermined number of preformed fan blades with the inje... | 08/29/2006 |
| 7086836 | Dual rate torque transmitting device for a marine propeller A torque transfer mechanism for a marine propulsion system provides a connector mechanism, a first torque transfer mechanism, and a second torque transfer mechanism. A plurality of rods can provide the first torque transfer mechanism and a polymer component is shape... | 08/08/2006 |
| 7063125 | Fan penetration feature for in-vehicle testing A fan penetration fixture consisting of a threaded shaft and a lock nut design. The fixture is designed to take the place of the fan clutch on a fan drive assembly in the vehicle being tested for a desired cooling system performance characteristic at each possible f... | 06/20/2006 |
| 7052230 | Pump assembly A pump assembly including a pump, a pump frame and a motor, the pump including a pumping member which is mounted in a pump housing, relative rotation of the pumping member with respect to the pump housing causing pumping of fluid, and the motor including a rotor and... | 05/30/2006 |
| 7008187 | Rotor for cooling pumps, in particular for marine engines and relevant manufacturing process A rotor for cooling pumps is provided. The rotor is of the type which includes a core to be assembled on a shaft connected with an engine and a body, fitted in the core, provided with a plurality of radial tabs in flexible material. The core and the body with the ta... | 03/07/2006 |
| 7008188 | Shock-absorbing propeller assembly A method and apparatus is disclosed for connecting a drive axle to a propeller. A drive member is configured to mount on a drive axle, a tubular member is coupled to the propeller, and a resilient members is configured to be positioned between the drive member and t... | 03/07/2006 |
| 7004730 | Integral shaft for use in mud pumps A shaft for use on in a mud pump having a shaft portion and a hub portion integrally formed with the shaft portion. The hub portion extends radially outwardly of the shaft portion. The shaft portion and the hub portion are machined from a single steel black. The hub... | 02/28/2006 |
| 6979170 | Vertical axis windmill and self-erecting structure therefor The present invention provides a structure comprising a blade attachment, a blade structure, an integrated driving shaft/generator for a wind system such as a vertical axis windmill, and a self erecting structure for such a wind system, together with an erecting met... | 12/27/2005 |
| 6955461 | Tickler for slurry reactors and tanks The present invention is directed to a tickler impeller and agitation system for use in stirred slurry reactors and storage tanks. The tickler impeller when mounted on a shaft is effective for providing an inward and downward swirl in a slurry medium which directs s... | 10/18/2005 |
| 6921249 | Main rotor shear restraint A main rotor shear restraint that includes two spherical ball segments, two corresponding bearing outer races, and a spring system for loading the bearing outer races against the two spherical ball segments. ... | 07/26/2005 |
| 6908284 | Fan attachment with dynamic out-of-balance equalization The invention is based on an axial fan with a hub region (4, 27) for connecting the axial fan with a driven shaft (20) of an electrical drive (21), whereby the axial fan is statically balanced by means of a balancing weight (26). A flexur... | 06/21/2005 |
| 6902375 | Quick connect ceiling fan blade A ceiling fan (10) is disclosed having a motor housing (11) with an electric motor (13) to which is mounted an annular array of blade irons (14) each having a blade (15) and a locking plate (17) mounted thereto. Each blade i... | 06/07/2005 |
| 6799946 | Propeller assembly A propeller assembly includes an interchangeable drive sleeve, an inner hub, a biasing member forcing the drive sleeve into contact with the inner hub, and a propeller including an outer hub in which the drive sleeve and inner hub are inserted. In an exemplary embod... | 10/05/2004 |
| 6773232 | Progressive shear assembly for outboard motors and out drives A progressive shear assembly which is suitably adapted for connecting a marine propeller to a propeller drive shaft in such a manner that a selected resilience and torsional resistance of the propeller with respect to the drive shaft is achieved. An adaptor shaft pr... | 08/10/2004 |
| 6715989 | Axial fan The present invention relates to an axial fan of the type comprising a hub, a plurality of arms extending radially outwardly from the hub and blade members, each blade member being secured to its respective arm, wherein the arms consist of flexible elements with a b... | 04/06/2004 |
| 6685432 | Hub assembly for marine propeller A propeller assembly is provided for mounting in a rotatable propeller shaft of a water craft. The propeller assembly includes a hub structure extending along an axis and including an outer surface having a plurality of circumferentially spaced blades pro... | 02/03/2004 |
| 6672834 | Removable propeller assembly incorporating breakaway elements A propeller assembly is provided for mounting on a rotatable propeller shaft of a marine vehicle. The propeller assembly includes a central adaptor mounted on the propeller shaft for rotational movement therewith. A tubular propeller housing is slidable o... | 01/06/2004 |
| 6666648 | Directional elastomeric coupler An elastomeric coupler assembly having a helical elastomeric bearing movably supports an active slat relative to a main element. An inner elastomeric coupler assembly and an outer elastomeric coupler assembly support the slat therebetween. Centrifugal for... | 12/23/2003 |
| 6659818 | Shock-absorbing propeller assembly A method and apparatus is disclosed for connecting a drive axle to a propeller. A drive member is configured to mount on a drive axle, a tubular member is coupled to the propeller, and a resilient member is configured to be positioned between the drive me... | 12/09/2003 |
| 6609892 | Propeller hub A propeller assembly that includes a plastic bushing that is secured, e.g., bonded, to an inner hub and is configured to engage an outer hub of a propeller. More specifically, and in an exemplary embodiment, the bushing includes a cylindrical shaped body ... | 08/26/2003 |
| 6524069 | Propeller assembly incorporating improved locking structure A propeller housing for a marine vehicle is provided which incorporates an improved locking structure for maintaining the propeller assembly on the drive shaft of the marine vehicle. The locking structure includes a spider washer having first and second e... | 02/25/2003 |
| 6478543 | Torque transmitting device for mounting a propeller to a propeller shaft of a marine propulsion system A torque transmitting device for use in conjunction with a marine propulsion system provides an adapter that is attached in torque transmitting relation with a propulsor shaft for rotation about a central axis of rotation. The first insert portion is atta... | 11/12/2002 |
| 6471481 | Hub assembly for marine propeller A propeller assembly is provided for mounting on a rotatable propeller shaft of a watercraft. The propeller assembly includes a hub structure extending along a longitudinal axis. The hub structure includes an outer surface having a plurality of circumfere... | 10/29/2002 |
