Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8025577 | Coupling guard A guard for shielding a coupling joint joining rotating shafts includes first and second cylindrical components configured to telescopingly adjustably engage to enclose the coupling joint. The cylindrical components are made from opposing identical semi-cylindrical ... | 09/27/2011 |
| 7553238 | Connecting assembly between a shaft journal and a constant velocity universal joint A connecting assembly between a shaft journal and a constant velocity universal joint having an outer joint part and an inner joint part engaged by the shaft journal. The inner joint part includes an elongated neck portion with at least one insertion groove formed t... | 06/30/2009 |
| 7520816 | Guard assembly for extending around a rotating shaft A guard assembly is provided for extending around a rotating shaft extending between a driving device and a driven device. The guard assembly includes two plastic pliable covers bent to form two cylindrical housings. One cylindrical housing is slidable within the ot... | 04/21/2009 |
| 7331110 | Device for a pole saw This invention relates to a device for a pole saw for pruning trees or bushes. The pole saw comprises an elongated stiff tube extending from a drive unit to a remote chain saw head (12) and incorporates a drive shaft (14) connected to an input shaft ( | 02/19/2008 |
| 7314416 | Drive shaft coupling A drive shaft assembly to interconnect a driving component and a driven component has a first shaft and a second shaft operably engaged with the first shaft to enable torque transmission and relative axial sliding motion. A joint component operably interconnects one... | 01/01/2008 |
| 7238113 | Tubular telescoping drive shaft A tubular telescoping drive shaft for transmitting rotation from a rotating power source to an element to be rotated thereby, including at least one inner member or shaft telescopically receivable in an outer tubular shaft and including a universal joint such as a H... | 07/03/2007 |
| 7220174 | Drywall sander The present invention provides an adjustable drywall sander capable of imparting more than one type of motion. In an exemplary embodiment, the sander includes a power unit with a motor and a sanding assembly coupled to the power unit. A telescopic support arm assemb... | 05/22/2007 |
| 7191711 | Shafting especially a cardan shaft and homokinetic bogie drive system for rail vehicles A shafting, particularly a cardan shaft for rail vehicles, has two cardan joints (4,5), each of which comprises two link forks (7–10) coupled to one another by a central part (6). The central part (6) comprises at least two partial elem... | 03/20/2007 |
| 7165908 | Arrangement at telescopic lifting beam Two telescopic lifting beams are loaded in their protruded position and are driven from a retracted position to a protruded position. In order to improve the bending strength of the lifting beams, the lifting beams are surrounded by two telescopic tubes, one of the ... | 01/23/2007 |
| 7144327 | Protection arrangement A protection arrangement for a double universal joint (1) for drives of agricultural implements has a first protection element (11), an annular second protection element (15) and a third protection element (18). The first protection eleme... | 12/05/2006 |
| 7077754 | Telescopic guard for coupled shafts A guard for covering the union of two rotating drive shafts that are movable in a telescoping manner through a travel distance along a shaft axis includes inner, center and outer guard sleeves disposed about the shafts along the shaft axis. The sleeves are preferabl... | 07/18/2006 |
| 6602141 | Drive line apparatus A drive line apparatus has a pair of tubular shafts configured to fit telescopically. The outer shaft has internal splines and the inner shaft has outer splines so that the shafts rotate in unison. Each of the outer and inner shaft has one partially close... | 08/05/2003 |
| 6406375 | Protective device for a drive assembly with a double universal joint A protective device for a driving assembly with a double universal joint has a protective cone (13) made of plastic. At a first axial end, the protective cone (13) is secured to a bearing assembly (12). At its second axial end (16), the protective cone (1... | 06/18/2002 |
| 6354953 | Bearing ring for supporting a protective device A bearing ring (10) for supporting a protective device of a rotating driveshaft is adapted to engage an annular groove of a component of the driveshaft, for example a joint yoke. The bearing ring (10) has a basic ring portion (13) which connects to a comp... | 03/12/2002 |
| 6203459 | Bicycle derailleur system with integral flexible seal to protect moving parts from contaminants A combination includes a derailleur having a chain cage engaging a bicycle chain, a clamping head clamping the derailleur to a bicycle frame and including an opening therethrough, a controller actuating the chain cage and including link arms pivotally con... | 03/20/2001 |
| 6186901 | Cardan transmission shaft, in particular of telescopic type, with protective sleeve and protective boots for the end forks The protective means is supported by means of sliding blocks (53) which can slide in to annular channels (37, 39) formed in the base of each of the two forks (29, 31); the base (29A) of the fork (29) is formed with a circular cross section essentially as ... | 02/13/2001 |
| 6159104 | Protective device for a drive assembly with a double universal joint A protective device for a drive assembly with a double universal joint (1) has a protective cone (10) with folds (15). At the cone's first axial end (11), it is secured to a bearing assembly (12). At its second axial end, the cone (10) includes a fixing p... | 12/12/2000 |
| 6123622 | Protective device for a driveshaft A protective device for a driveshaft (1), with two universal joints (2, 3) has a protective cone (6) associated with the first universal joint. The protective cone (6) has an extension in the form of a cone portion (14). A sleeve (15) is received in a rot... | 09/26/2000 |
| 5980389 | Driveshaft with coupling means A driveshaft has two shaft parts (4, 6) which provide a coupling. To facilitate the operation of coupling the two shaft parts (4, 6) to one another, the coupling operation is divided into two phases. A member initially aligns the two shaft parts (4, 6) al... | 11/09/1999 |
| 5971858 | Protective casing with ring for shafts, in particular cardan shafts A protective casing with ring for shafts, in particular cardanic shafts. It comprises, coaxially, a casing, a sleeve ring, and a tubular element. A first end of the sleeve of the ring is destined to engage with a circumferentially groove of the joint, and... | 10/26/1999 |
| 5926961 | Tree trimmer with telescopic rod A hand-guided working tool has a telescopic rod with a first and a second end. A drive motor is connected to the first end of the telescopic rod. A working tool, connected to the second end of the telescopic rod, is driven by the drive motor. The telescop... | 07/27/1999 |
| 5924946 | Bicycle derailleur system with integral flexible seal to protect moving parts from contaminants, including cable seal to prevent contaminants from entering cable housing A combination bicycle derailleur and one-piece cover therefor, includes a derailleur having a chain cage, a cage securing member connected with the chain cage, a derailleur clamping head for clamping the derailleur to the bicycle frame, and a controller f... | 07/20/1999 |
| 5819418 | Working tool for trimming trees A hand-guided working tool has a telescopic rod with a first and a second end and a drive motor connected to the first end. A working tool is connected to the second end of the telescopic rod. A telescopic drive shaft is enclosed in the telescopic rod. A ... | 10/13/1998 |
| 5800271 | Protective device for driveshafts having a removable protective cone A protective device for a driveshaft (1) has a connecting cap (9) and sliding ring (10) for connecting to a joint yoke (4) of a universal joint (2). The connecting cap (9) connects with a protective cone (1 2). The protective cone (12) includes a fixing p... | 09/01/1998 |
| 5772521 | Protective device for a driveshaft having radial supporting means for the protective cone The invention relates to a protective device which is supported on the two universal joints (2, 2') by connecting caps (8) and sliding ring. Furthermore, each connecting cap (8) is formed to allow a protective cone (12) to be connected thereto. Protective... | 06/30/1998 |
| 5702306 | Protective device for telescopic shafts A protective device for telescopic driveshafts used in driving agricultural implements has two protective tubes (8, 9) which are axially inserted into, and overlap, one another. The tubes (8, 9) are adjustable relative to one another along their longitudi... | 12/30/1997 |
| 5657545 | Fixture for identifying phase angle relationships in a steering shaft assembly A fixture for identifying the phase angle relationships between two universal joints secured to the ends of a steering shaft assembly includes first and second universal joint assemblies which are connected together by a shaft assembly. The shaft assembly... | 08/19/1997 |
| 5655581 | Tractor-mounted stump grinder with laterally and longitudinally movable cutter wheel A stump grinder mountable on a three-point hitch of a conventional tractor and provided with a laterally and longitudinally movable cutter wheel. The stump grinder includes a support frame adapted for mounting on the three-point hitch, a swing frame horiz... | 08/12/1997 |
| 5582547 | Coupling shaft having a protective cover with a locking member Coupling shaft for transmitting a torque from the power take-off shaft of a tractor to the input shaft of a driven agricultural machine, which shaft is provided with at least one universal joint, wherein the shaft is protected by a tube of fitting materia... | 12/10/1996 |
| 5562546 | Snap in plug for a slip yoke A plug closes the end bore of a slip yoke. A plurality of teeth are cast into a counterbore formed at an end of the slip yoke. The rigid plug snaps behind the teeth to be retained within the counterbore. The teeth are circumferentially spaced and may be f... | 10/08/1996 |
| 5509858 | Driveshaft with closable maintenance aperture in protective tubes A driveshaft for driving agricultural machinery has two profiled tubes which are movable one inside the other and serve to transmit torque. Two protective tubes (5, 6) are provided which are also axially movable one inside the other. To be able to lubrica... | 04/23/1996 |
| 5509324 | Intermediate steering shaft An intermediate steering shaft for a motor vehicle steering system including a polygonal tubular shaft, a polygonal solid shaft telescopically slidably disposed in the tubular shaft, and a twist lock for clamping a side of the solid shaft against a side o... | 04/23/1996 |
| 5226853 | Telescopic coupling for steering systems A telescopic coupling for use in applications such as the steering systems of heavy trucks. The coupling has modes and includes a female member, a male member, and an interposed member which are connected together in a main sliding system operable in a fi... | 07/13/1993 |
| 5199926 | Telescopic cover A telescopic cover element is made from a sheet material blank and has one U-shaped material deformation formed from multiple bends for receiving a rear portion wall/or providing an extension stop. A second U-shaped material deformation formed from multip... | 04/06/1993 |
| 5173082 | Telescopic protective casing for a transmission shaft with lubrication distribution system The protective casing includes a system of telescopic tubes (26 and 27) that cover a pair of telescopic tubular elements (13 and 14) connecting two universal joints (9 and 11) on a transmission shaft. The inner telescopic tube (26) is fitted with a grease... | 12/22/1992 |
| 5169358 | Protective casing for the end yoke of a transmission shaft description A protective casing (33) for the end yoke (31) of a transmission shaft with locking pin (29) and a rotating sleeve (39) for unlocking the aforementioned pin (29), is characterized in that it includes an external sleeve (45) that does not rotate with the a... | 12/08/1992 |
| 5013282 | Extendible shaft assembly for portable tools An extensible power shaft assembly used, for example, with a portable tree pruner includes a telescoping axial drive shaft assembly and a telescoping housing coaxially surrounding the drive shaft assembly. Overlapping ends of the telescoping drive shaft c... | 05/07/1991 |
| 4944711 | Extendable/retractable operational sleeve An extendable/retractable operational sleeve is composed of a main sleeve portion and a movable sleeve portion movable in the axial direction in a telescopic manner relative to the main sleeve portion. A stop member for limiting outward separation of the ... | 07/31/1990 |
| 4922247 | Encoder mount An encoder is rigidly mounted to a component shaft and allowed to float with it, saving the expense of a flexible coupling and improving accuracy. An easily assembled detent prevents rotation of the encoder housing with the shaft.... | 05/01/1990 |
| 4747804 | Protector for universal joints A protector for use around the universal joint in the power take-off of a motor vehicle has a rigid tubular section which is made of a synthetic plastic material and surrounds one of the shafts in the joint, a rigid frustoconical section which is made of ... | 05/31/1988 |
