Bizarre Patents
An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 8187128 | Tensioning device The invention relates to a clamping device comprising a pivoting arm on which a clamping roll is rotatably arranged. In order to damp pivoting movements of the pivoting arm, a damping device is provided in the region of a pivoting axis X. Furthermore, the pivoting a... | 05/29/2012 |
| 7824286 | Device for placing a looped belt under tension A tensioning device has a tension arm mounted on a base. A pulley is mounted on the tension arm for engaging a looped belt. By changing mounting bushings, one can select either a static mode wherein the tension arm is held stationary relative to the base, or a dynam... | 11/02/2010 |
| 7766775 | Chain tensioner A chain tensioner includes a housing having a closed bottom. A rod is axially movably inserted in the housing for pressing a chain. A wear ring is mounted to the outer periphery of the rod and is biased by a return spring mounted in the housing in a direction away f... | 08/03/2010 |
| 7367908 | Belt tensioning device A belt tensioning device for a continuous belt drive. The device includes a torsion spring assembly (20) with a longitudinal axis (A2) and with at least one torsion bar or torsion tube (32). The torsion spring assembly (20) can be cla... | 05/06/2008 |
| 7362066 | Overload protection system An overload protection system and method of protecting a drive unit includes a torque arm assembly mounted to a fixture and a gear reducer. The reducer includes a bracket mounted to an axle of the reducer which is positioned adjacent to a measuring device. The torqu... | 04/22/2008 |
| 7336462 | Alternator and starter tester protection apparatus and method An method and apparatus testing an alternator and/or starter assembly including a power source for energizing the alternator and/or starter, a computer processor for monitoring electrical current supplied to energize the alternator and/or starter wherein the compute... | 02/26/2008 |
| 7300041 | Vertical alternator holding apparatus and method for alternator testing An apparatus for supporting an alternator for testing uses a supporting pin mounted to extend in a first direction relative to the alternator. A first holding pin extends in a second direction relative to the alternator, and has two ends with a first end having a bo... | 11/27/2007 |
| 7247109 | Pulley fixing apparatus of image forming apparatus A pulley fixing apparatus of an office machine having a pulley fixing part rotatably fixing a driven pulley on a frame, a sliding part movably supporting the pulley fixing part on the frame, and an automatic tension adjusting part elastically urging the pulley fixin... | 07/24/2007 |
| 7241239 | Auto tensioner In an auto tensioner, a high pressure oil chamber sectioned by a leading end portion of a cylinder and a plunger is provided within the cylinder. A gas chamber and an oil reservoir chamber are sectioned in a sealed manner in an outer periphery of the cylinder and th... | 07/10/2007 |
| 7232029 | Cantilevered conveying belt for a sortation system A conveyor system having a primary conveyor and a cantilevered conveying belt. In the preferred embodiment, the cantilevered conveying belt includes a cantilevered frame having at least one conveyor belt and a belt tension assembly attached to the cantilevered frame... | 06/19/2007 |
| 7212911 | Alternator and starter tester apparatus and method An alternator and starter tester system is provided that includes a protective hood or cover, a controller connecting an LCD touch-screen, an alternator main harness connector, a starter harness self-test connector, a barcode connector, USB host and USB function con... | 05/01/2007 |
| 7207913 | Bi-directional drivebelt tensioning device A device for automatically maintaining tension and control of a drivebelt as the driving direction of the drivebelt is rapidly reversed and when the drivebelt is worn. ... | 04/24/2007 |
| 7174799 | Hydraulic tensioner In a hydraulic tensioner, a deairing valve unit comprising a synthetic resin ball guide, a check ball a biasing spring, a ball seat, and a retaining disc, is press-fit into a hollow plunger, and disposed adjacent the protruding end of the plunger. The ball and seat ... | 02/13/2007 |
| 7152464 | Belt tensioning apparatus and method for alternator testing An apparatus for testing an alternator has a base, a motor mounted to the base and a pulley extending from the motor. A belt is connected to the motor pulley and the alternator. A mount mounts the alternator to the base, and a pivoting idler arm pivotally is mounted... | 12/26/2006 |
| 7150186 | Door interlock apparatus and method for alternator/starter bench testing device An apparatus and method for testing vehicle motor rotary accessory devices has a base and a housing assembly connected to the base. A mounting component is attached to the base. The apparatus includes a door cover which is rotatably attached to a side of the housing... | 12/19/2006 |
| 7114544 | Cord tensioner for covering for architectural openings A tensioner for the control element of a covering for an architectural opening includes a base member attachable to a support surface adjacent to the architectural opening with the base member supporting an upstanding plunger about which a surrounding housing is ada... | 10/03/2006 |
| 7090606 | Adjustable tensioner An adjustable tensioner with a base, a pivot-arm that oscillates about a pivot secured to the base, a pulley attached to the pivot-arm, a compression spring with a first end operatively connected to the pivot-arm and a second end operatively connected to a shoe that... | 08/15/2006 |
| 7086981 | Transmission and constant speed accessory drive An infinitely variable speed ratio planetary ball transmission comprising planetary members in rolling contact with moveable inner and outer races and a constant speed accessory drive system utilizing the transmission. The transmission is infinitely variable between... | 08/08/2006 |
| 6792999 | Tab release cord tension device A tensioning device for the cord loop of a window treatment apparatus includes a cord guide disposed in a housing, a biasing element such as a spring and a locking member that locks the cord guide into an installation position. During installation, the cord guide is... | 09/21/2004 |
| 6726532 | Belt tensioning assembly for CMP apparatus A tensioning assembly for a polishing belt on a linear chemical mechanical polishing apparatus. The tensioning assembly comprises first and second rollers which are operably engaged by respective air cylinders and exert a selected degree of downward tension on the l... | 04/27/2004 |
| 6666785 | Tensioner A tensioner has a tensioner body and a plunger slidably mounted in a hollow cylindrical part of the tensioner body. A plug is screwed into a female or internal screw formed from one end of the hollow cylindrical part. A coil spring is loaded in a spring a... | 12/23/2003 |
| 6607459 | Linear tensioner A tensioner having a base. A spring connected to the base biases a plate, having a pulley, toward a belt. Frictional blocks are aligned on the base in a staggered fashion along a spring centerline. The plate slidingly moves in a linear path between the bl... | 08/19/2003 |
| 6602155 | Pivoting idler assembly for belt drive mower An idler assembly which is easily removable from a mower deck is disclosed. The idler assembly is rotatably mounted to the mower deck about a shouldered shaft and held in place by an easily removable spring clip. An idler pulley is rotatably attached to t... | 08/05/2003 |
| 6579199 | Linear tensioner A tensioner having a pulley journaled to a housing. The housing further comprises a guide. The guide slidingly engages rails on a base. The guide and rails constrain the housing to move in a predetermined linear path. The rails are horizontally offset fro... | 06/17/2003 |
| 6575858 | Compensating drive belt tensioner A drive belt tensioning method and assembly using a spring loaded, non-active tensioner. The spring is mounted between a base plate, and a tensioner arm, both of which rotate. A belt tensioning pulley is mounted on the tensioner arm, such that the belt te... | 06/10/2003 |
| 6450908 | Tensioner for applying tension to force transmitting member A tensioner comprises shaft members that mate with each other by way of thread portions. A first shaft member is rotatable with respect to a casing and is restrained from moving in its axial direction. A second shaft member, which is restrained from rotat... | 09/17/2002 |
| 6450907 | Inner race idler pulley tensioner The invention comprises a tensioner having an inner race rotation idler pulley. The pulley having a web and a belt bearing surface connected to the web. The web is attached to an inner race of a bearing by a fastener. The pulley may be stamped out of shee... | 09/17/2002 |
| 6435992 | Tensioner with plunger stopper pin A tensioner has a substantially U-shaped stopper pin hooked at opposite end parts on a tensioner body and part of a plunger, respectively, to keep the plunger in a retracted position against the force of a spring before the tensioner is mounted to an engi... | 08/20/2002 |
| 6422964 | Belt tensioner, and a drive system and engine including such a tensioner A tensioner comprising a rigid cage provided with a fixing means for fixing to an engine block or to a plate rotatably mounted on the engine block. The cage slidably receives a rigid part that carries, preferably at one of its ends, bearing means for bear... | 07/23/2002 |
| 6244982 | Hydraulic chain tensioner with a piston having a plurality of sliding elements A hydraulic tensioning device for a power transmission system having a belt or a chain includes a cylinder and piston assembly of which a movable element, generally the piston, acts on the belt or chain so as to ensure that it is tensioned and thus ensure... | 06/12/2001 |
| 6244981 | Hydraulic tensioner with pawl-style external rack A hydraulic tensioner having a pawl-style rack member. The rack member is located in a groove in a bore in the tensioner housing. The tensioner piston has grooves along its exterior surface that correspond to the wedges or grooves in the pawl rack member ... | 06/12/2001 |
| 6234929 | Tensioner A tensioner for traction means such as a belt, includes a housing which accommodates a cylinder for guiding a hydraulically dampened, spring-loaded plunger in an axial direction for tensioning the traction means. The interior space of the housing is close... | 05/22/2001 |
| 6196939 | Hydraulic tensioner with a hydraulically controlled rack A hydraulic tensioner having a hydraulically actuated rack member. A pair of check valves permit fluid to flow from an external source of pressurized fluid into a fluid chamber. The two check valves form a substantially fluid tight chamber in order to pro... | 03/06/2001 |
| 6193623 | Tensioner with improved damping device A tensioner for a driving member includes a piston (4) guided slidably in a housing (1) and spring-loaded against the driving member. The tensioner further includes a damping device (9, 18) for damping movements of the piston through discharge of hydrauli... | 02/27/2001 |
| 6171208 | Device for tensioning flexible elements wound onto pulleys A device for tensioning flexible elements wound onto pulley has a pulley (4) onto which the flexible element (2) is (partially) wound is able to perform translatory movements relative and perpendicular to the shaft (8) on which it is rotatably mounted, re... | 01/09/2001 |
| 6165091 | Rotary hydraulic automatic tensioner Disclosed is a tensioner for use in an engine. The tensioner comprises a fixed structure that fixes to the engine. A movable structure is mounted for movement relative to the fixed structure in a belt tensioning and opposite directions. A pulley member ha... | 12/26/2000 |
| 6165089 | Transmission apparatus and method A transmission apparatus includes a chain operatively engaged with a driver sprocket assembly and a driven sprocket assembly, a tensioner bracket including a roller engaged with the chain, a tensioner rod including a plurality of spaced apart flange porti... | 12/26/2000 |
| 6159120 | Belt tensioner an engine including such a tensioner and a method of mounting such a tensioner A tensioner, an engine fitted with such a tensioner, and a method of mounting such a tensioner. The linear tensioner having both a first end fixed to an engine without any degree of freedom, typically via a fixing endpiece having two parallel fixing openi... | 12/12/2000 |
| 6155942 | Traction wheel for tension element A device for tensioning a traction mechanism, preferably a chain, which includes a traction wheel, preferably a sprocket (1), rotatably mounted on a hollow axle (3). Within the hollow axle (3), a hollow piston element (5, 6) is arranged, which is biased a... | 12/05/2000 |
| 6146300 | Tensioner device for chain drive mechanism A tensioner device for adjusting a tension in a chain wound around two sprockets includes a tensioner lever held in sliding contact with a slack run of the chain, an oil-filled tensioner provided on a stationary member, and a ratchet tensioner provided on... | 11/14/2000 |
