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| Number | Title | Issue Date |
| 7219870 | Zero looseness fastener for linkage assembly A fastener is used to connect a first link to a second link in a vehicle seat assembly. The fastener has a head portion and a body portion extending outwardly from the head portion and defining an external diameter. The body portion is generally cylindrical and has ... | 05/22/2007 |
| 7089670 | Portable motor chain saw A portable motor chain saw comprises a machine body (1) which a driving unit, a rear handle (2), a front handle which extends over the machine body, a guide bar (6), and a dog device (15) provided such that it can be pressed against the o... | 08/15/2006 |
| 6964101 | Lightweight guide bar for chainsaw A lightweight guide bar formed from a heavy material, e.g., steel, and having a center section, e.g., a cavity of reduced material and fitted with a lighter weight insert, e.g., aluminum plate. The center section includes a flange to which the aluminum plate is adhe... | 11/15/2005 |
| 6944958 | Chain saw chain tensioning and braking system A chain saw which includes chain tensioning and braking systems. Tensioning and braking are caused by the presence and control of longitudinal and lateral slits in an elongated support which provides a continuous chain channel guide in its outer circumference. ... | 09/20/2005 |
| 6722045 | Guide bar having rotating guide discs The invention is directed to a guide bar for a motor-driven chain saw (1) and includes a longitudinally extending flat base body (2) having a peripherally extending guide groove (3) for guiding a saw chain (4). In the region of the direct... | 04/20/2004 |
| 6701628 | Guide bar for a portable handheld work apparatus A guide bar (1) is provided for a portable handheld work apparatus, such as a motor-driven chain saw or overhead branch cutter, and includes an elongated, flat base body (4) having a peripherally extending guide groove for guiding a saw chain (6). In the ... | 03/09/2004 |
| 6619409 | Vibration-isolating member and vibration-isolating device A vibration-isolating member is formed of an elastic material, and has a mounting hole at the center thereof, a large diameter section at an end of the mounting hole, a groove at the periphery of the large diameter section, and a flange. One of a vibratio... | 09/16/2003 |
| 6612037 | Replaceable nose member for chain saw guide bars A chainsaw guide bar includes a bar body and a nose member removably attached to the bar body by an elastic snap-in coupling, eliminating the need for separate fastening elements. The snap-in coupling includes dimples formed in tongues of the nose member,... | 09/02/2003 |
| 6588110 | Guide bar having rotating guide disc The invention relates to a guide bar for a motor-driven chain saw comprising an elongated planar base body which has a guide groove (8) in its outer periphery for guiding a saw chain (6). The saw chain (6) includes cutting links (14), lateral connecting l... | 07/08/2003 |
| 6317989 | Chain saw nose sprocket A nose sprocket for the saw chain of a chain saw includes radially projecting teeth, each tooth having leading and trailing edges. Each of those edges includes a straight inner portion and an outer portion that deviates from a radius of the sprocket by a ... | 11/20/2001 |
| 5974673 | Nose sprocket for chain saw guide bars An improved nose sprocket which carries central drive links of a saw chain has a gullet shaped to provide ample space for saw dust to collect and reduce stress concentration within the gullet. The nose sprocket has teeth which define a gullet. The gullet ... | 11/02/1999 |
| 5924945 | Sprocket with indentations forming hydrodynamic bearings A nose sprocket for a chain saw guide bar, where the bottom part of the teeth or the outermost part of the central region or both have indentations with softly inclined trailing edges, acting as hydrodynamical bearings to keep the sprocket centered betwee... | 07/20/1999 |
| 5865699 | Coated chain saw nose sprocket A nose sprocket for chain saws includes an inner peripheral surface defining a bearing race, and teeth disposed at an outer peripheral portion of the nose sprocket. Side surfaces of the nose sprocket are provided with a vapor-deposited low-friction coatin... | 02/02/1999 |
| 5653028 | Saw blade machine and trimmer A trimmer which can reduce the size of a section including a lubricating oil pump for automatically supplying a lubricating oil to a saw chain during the drive of the saw chain and drive shaft members for driving the saw chain, and secure good mountabilit... | 08/05/1997 |
| 5606801 | Drive sprocket device with flanges A drive sprocket arrangement includes a drive sprocket and a drive ring rolling loosely on the outer periphery of the sprocket. Drive links of the saw chain enter recesses in the sprocket via orifices in the drive ring. The drive ring has at an axial inne... | 03/04/1997 |
| 5537751 | Roller nose chain saw guide bar A chain saw guide bar having two opposed nose plates at the free end thereof. Each nose plate has an outwardly formed impression which faces the outwardly formed impression in the opposed nose plate, to allow a thicker idler roller assembly to be mounted ... | 07/23/1996 |
| 5461789 | Roller nose chain saw guide bar A chain saw guide bar having two opposed nose plates at the free end thereof. Each nose plate has an outwardly formed impression which faces the outwardly formed impression in the opposed nose plate, to allow a thicker idler roller assembly to be mounted ... | 10/31/1995 |
| 5303477 | Multi-ring sprocket A sprocket for a chain including a thick hub portion and a plurality of thinner sprocket rings mounted on the hub. The hub has a rounded polygon peripheral configuration and the rings have complementary bores to receive the hub. The rings have sprocket te... | 04/19/1994 |
| 5239754 | Power take-off system for chain saw A power take-off system for attachment to the elongated bar of a chain saw. A shaft is rotatably carried by a housing which is attached to the bar of the chain saw. A gear is carried on the shaft and is located in a transverse aperture in the bar such tha... | 08/31/1993 |
| 5136783 | Chain saw sprocket A chain saw bar nose has a rotatable sprocket. The sprocket assembly is adapted to conform in shape to the drive tang portions of the saw chain whereby the nose sprocket may receive operational forces imposed by the saw chain substantially as compressive ... | 08/11/1992 |
| 4981129 | Chain saw A chain saw has a chain bar (1) with a nose sprocket (5) over which a saw chain (3) circulates. The sprocket (5) is mounted between two nose cheek plates (53). The interior spacing between the plates corresponds to the thickness of the sprocket. The perip... | 01/01/1991 |
| 4970789 | Sprocket nose guide bar for chain saws A sprocket nose guide bar for guiding an endless saw chain. A configured sprocket is rotatably mounted in the nose of the bar and functions to elevate and transport the saw chain around the nose end. The teeth of the sprocket engage the drive links of the... | 11/20/1990 |
| 4947550 | Guidebar with oil channels A guide bar for a chain saw with closed oil channels, arranged to lubricate the inside of the chain just before it starts sliding against the underside of the guidebar, as well as the supporting teeth of the nose sprocket just before the intermesh with th... | 08/14/1990 |
| 4876796 | Sprocket assembly for chain saws A sprocket assembly including a sprocket adapter driven by the motor of a chain saw. The adapter includes an adapter shaft which has a defined inner opening to fit around the drive shaft of the chain saw. A sprocket is mounted on the adapter shaft. Spline... | 10/31/1989 |
| 4813135 | Roller nose bar A nose roller tip for a cutter bar of a chain saw. There is a mounting web to engage the cutter bar. A pair of rollers are each mounted on opposed sides of the mounting web. There are outer plates, one adjacent each roller. The mounting web, rollers and o... | 03/21/1989 |
| 4796360 | Motor-driven chain saw with a sprocket guide For motor-driven chain saws, there is the danger that the chain saw will be kicked back if the reaction forces suddenly increase intensely in response to the forward thrust. This kickback effect and the danger of accident associated therewith are intended... | 01/10/1989 |
| 4765062 | Arrangement in a chain saw An arrangement for decreasing the strain on a rivet joint of the top wheel in a motor saw. Lateral forces in consequence of unvoluntary jamming or twisting of the saw chain by its surrounding of the top of the sword cannot be totally avoided, which often ... | 08/23/1988 |
| 4754549 | Motor-driven chain saw having an anti-kickback sprocket With motor-driven chain saws, there is the danger that the chain saw will be thrown upwardly and rearwardly when it is applied to wood by the user with a forward thrust. Serious injuries can then occur. The invention is directed to a motor-driven chain sa... | 07/05/1988 |
| 4747214 | Saw chain for a motor-driven chain saw With motor-driven chain saws, there is the danger that the chain saw will be thrown upwardly and rearwardly when it is applied to wood by the user with a forward thrust. Serious injuries can then occur. The invention is directed to a saw chain which is so... | 05/31/1988 |
| 4722141 | Chain saw cutter bar-nose assembly A chain saw bar having an elongated shape, a saw chain guideway around substantially the length of the perimeter thereof, with a matching saw chain sprocket in the nose thereof, and calculated points of variation in strength in the interior of the bar at ... | 02/02/1988 |
| 4651424 | Chain saw guide bar A chain saw guide bar comprises a guide bar body and a nose assembly coupled to an end of the guide bar body, the guide bar body having a longitudinal tongue projecting centrally from an end thereof and thinner core plates extending laterally from opposit... | 03/24/1987 |
| 4593591 | Chain saws and chains therefor A chain saw having a bar (51) with a sprocket (50) rotatably mounted in the nose, and a chain with cutter links (52) mounted to travel along the periphery of the bar (51). The driving tongues (54) of the chain and the gullets (50a) between the teeth of th... | 06/10/1986 |
| 4557054 | Chain saw bar A chain saw bar having a central groove along the top and bottom edges to guide the chain about the bar, and a bar nose structure at the end of the bar to guide the chain from the top edge to the bottom edge. The nose structure including an extension of t... | 12/10/1985 |
| 4513799 | Method of cutting substantially horizontal cantilevered objects such as logs, and apparatus for carrying out the method Cutting horizontal, cantilevering objects of splittable material, such as de-barked tree trunks and the like is carried out with the aid of a guided, endless circulating saw chain (10), the upper cutting part of which is moved from below and upwards throu... | 04/30/1985 |
| 4506444 | Chain saw bar Chain saw bar having at its free end a sprocket 20 which supports the saw chain and is rotatably mounted between two side plates (18, 19) in the saw bar on a tubular shaft (26) which is rigidly connected to the sprocket and is adapted to transfer rotation... | 03/26/1985 |
| 4492030 | Chain saw bars A chain saw having a saw chain and a chain bar, the saw chain comprising a plurality cutter links interconnected by connector links, the chain saw further having a sprocket or roller mounted for rotation in the plane of the bar adjacent the nose thereof, ... | 01/08/1985 |
| 4461269 | Stonecutter sprocket having replaceable carbide steel teeth A stone block, cutting chain saw having an improved drive sprocket and chain link design is disclosed. The sprocket itself is formed using rectangular, preferably square, shaped teeth which engage corresponding receiving areas on the cutting chain. In the... | 07/24/1984 |
| 4341017 | Tree-pruning and clearing apparatus A pruning and clearing apparatus comprises a guide bar mounted on a handle. The saw chain of the guide bar is driven by means of a hydraulic motor and a separate portable drive unit comprising a hydraulic pump driven by an internal combustion engine and p... | 07/27/1982 |
| 4321750 | Chain guide for a chain saw A chain saw guide blade includes a pair of side plates between which an axle is fixedly supported and a sprocket is rotatably supported with respect to the axle. The sprocket is rotatable about the axle with roller bearings therebetween for guiding a cutt... | 03/30/1982 |
| 4259783 | Bar jointing In a segmented bar having a longitudinal axis, a first bar section slidably interengageable with a second bar section under longitudinal axially displacement to move into and out of end to end abutting interlocking mating relation, each of said bar sectio... | 04/07/1981 |
