Quotables
"The radio craze will die out in time."
Thomas Edison ; 1922
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8100794 | Power transmission chain and power transmission apparatus When disposing pins of different shapes at random, pins of small involute base circle radius are made not to be arranged contiguously, pins of relatively small length are made not to be arranged contiguously, and pins of relatively outward offset are made not to be ... | 01/24/2012 |
| 8007387 | Inverted tooth chain sprocket with frequency modulated meshing A sprocket includes teeth defined relative to respective tooth centers spaced evenly about an axis of rotation. An inverted tooth chain includes rows of links each structured for inside flank engagement with the sprocket, with leading inside flanks of each row proje... | 08/30/2011 |
| 7585239 | Transmission chain A transmission chain for a transmission having a drive sprocket and a driven sprocket with chain guides between the sprockets, at least one of the guides having a curved surface on which one of the runs of the chain slides in its travel between the sprockets. The ch... | 09/08/2009 |
| 7229375 | Back drive silent chain system with low profile sprocket A silent chain and sprocket assembly is disclosed for use with a chain tensioner that provides driving contact on both sides of the chain and improved system wear, noise and vibration characteristics without adding to the chain's weight or material costs. The front-... | 06/12/2007 |
| 7201687 | Power transmission chain with ceramic joint components Power transmission chains (10, 40, 60) which are suitable for automotive uses as well as other uses and which have a reduced susceptibility to wear and corrosion, in which such chains (10, 40, 60) are constructed to include a plurality of sets (12, ... | 04/10/2007 |
| 7167739 | Assembly of medical examination device and a combination of a frame and a patient table as well as such a combination A medical examination device (1) comprising an examination space (3), a combination of a frame (5) and a patient table (4), and rack (8) which can be driven by a drive (9, 10) to displace a patient on the patient table into ... | 01/23/2007 |
| 7048666 | Silent chain power transmitting apparatus A silent chain power transmitting apparatus has an endless link chain having a plurality of link plates (11A,11B,11C, . . . ) connected together, and sprocket wheels (20). Each of an inside flank (13) and an outside flank (14 | 05/23/2006 |
| 6965795 | Impedance spectroscopy method for monitoring ischemic mucosal damage in hollow viscous organs Alternate embodiments of an impedance spectroscopy method are disclosed for monitoring ischemic mucosal damage in hollow viscous organs. In each embodiment, a sensor catheter is placed inside a patient's hollow viscous organ. Afterwards, the catheter is electrically... | 11/15/2005 |
| 6872158 | Silent chain transmission device In a transmission having a silent chain meshing with a sprocket, each link plate of the chain includes inside engaging surfaces and outside engaging surfaces having the same shape as that of a tooth profile of a hob cutter for shaping the sprocket teeth. The sprocke... | 03/29/2005 |
| 6719127 | Compensation for shaft twist in the drive system of modular conveyor belts A sprocket drive system for a modular conveyor belt that compensates for drive-shaft twist under load. The drive system includes a plurality of belt drive surfaces spaced apart across the width of the underside of each row of a modular conveyor belt. A drive shaft s... | 04/13/2004 |
| 6623392 | Short pitch tooth chain A short pitch tooth chain that reduces the level of impact noise generated during operation is disclosed. A chain system includes a first sprocket having a plurality of sprocket teeth spaced apart by a first distance, a second sprocket also having a plura... | 09/23/2003 |
| 6533107 | Silent chain power transmitting apparatus A silent chain power transmitting apparatus includes a silent chain and two or more sprockets with different number of teeth, wherein the sprockets each have a tooth form formed by hobbing with a hob cutter having teeth profiled similarly with the profile... | 03/18/2003 |
| 6186920 | Short pitch tooth chain A short pitch tooth chain that reduces the level of impact noise generated during operation. A chain system includes a first sprocket having a plurality of sprocket teeth spaced apart by a first distance, a second sprocket also having a plurality of sproc... | 02/13/2001 |
| 6168543 | Silent chain and sprocket having teeth with matching curved surfaces A silent chain and sprocket system for power transmission that includes a toothed sprocket and a chain with multiple links. At each point of engagement between the sprocket teeth and the chain link teeth, the sprocket teeth have a curved surface that make... | 01/02/2001 |
| 6155944 | Silent chain link plate with convex outer flank portion A silent chain link plate that has a plurality of rows of interleaved links or link plates, with each link plate having a pair of apertures. Pivot pins extend through the apertures to connect adjacent rows of links. Each link plate has a pair of teeth for... | 12/05/2000 |
| 6039665 | Multiple sprocket assembly for a bicycle A plurality of sprockets are coaxially mounted together, wherein a spacing between each pair of adjacent sprockets is less than a thickness of at least one of the plurality of sprockets. In another embodiment of the invention, a plurality of sprockets are... | 03/21/2000 |
| 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 |
| 5921881 | Narrow bicycle chain with inner links that receive sprocket teeth within a bottom recess A derailleur bicycle chain includes a plurality of intermediate links, a plurality of pairs of outer links, and a plurality of fasteners. Each fastener connects an end of one of the plurality of intermediate links between a corresponding pair of outer lin... | 07/13/1999 |
| 5921877 | Tooth profile for roller chain sprocket A tooth profile for a roller chain sprocket, is provided, which is capable of making the rollers of a chain come into engagement with the teeth of the roller chain sprocket without generating a large noise, and which is capable of making the rollers disen... | 07/13/1999 |
| 5876295 | Roller chain drive system having improved noise characteristics A unidirectional roller chain system for use primarily in automotive engine camshaft drive applications wherein the tooth profile of the sprockets are modified for noise reduction. This new tooth profile is asymmetrical with flank radii that may differ fr... | 03/02/1999 |
| 5800301 | Chain assembly using formed bushings with inverted teeth A roller chain is provided with a bushing with a silent chain link profile. The bushing has a pair of depending toes which engage the teeth of a sprocket to provide power transmission.... | 09/01/1998 |
| 5667450 | Drive sprocket device A saw chain of a chain saw is driven by a drive sprocket assembly including a drive sprocket and a pair of separate drive rings arranged coaxially and rotatably on the drive sprocket. Drive links of the saw chain extend through an annular space formed bet... | 09/16/1997 |
| 5518109 | Conveyor drive apparatus A conveyor drive apparatus comprising a shaft having sprockets mounted thereon for rotation with the shafts. A conveyor belt is engaged by the sprockets. A key includes a body shaped to fit loosely in a groove along the length of the outer surface of the ... | 05/21/1996 |
| 5419743 | Low noise chain drive A low noise chain drive of this invention includes toothed sprockets and an endless silent chain having sets of link plates successively connected for articulation by means of connecting members. Each set has a plurality of transversely aligned link plate... | 05/30/1995 |
| 5338264 | Compliant sheave A sheave is provided with a compliant contact surface such that the sheave is suitable for use with a leaf chain in applications in which the leaf chain is subjected to more than simply a straight tensile pull. Since the sheave contact surface is complian... | 08/16/1994 |
| 5318483 | Sprocket with asymmetrical teeth for mining conveyors A unidirectional sprocket includes a hub and a series of radially arrayed sprocket teeth. Each of the sprocket teeth include a root at the point of connection with the hub, a radially extending split body and twin outwardly projecting points at the distal... | 06/07/1994 |
| 5263575 | Drive sprocket systems for registration of spaced metal laminations across the width of plastic conveyor belts Sprocket drive mechanisms formed of metal lamina engage belt drive surfaces formed in a modular plastic conveyor belt. The lamina are positioned axially along a rotary drive shaft to mate with drive surfaces extending across the width of the belt. Belt we... | 11/23/1993 |
| 5224722 | Leaf chain drive assembly A leaf chain drive assembly (20) designed for use with a platform lift of the type disclosed in U.S. Pat. No. 4,058,228. Leaf chains (72, 120, 208) are used in place of roller chains for transmitting rotational drive between spaced sheaves (50, 60). Each ... | 07/06/1993 |
| 5170883 | Laminated metal sprocket for plastic modular conveyor belts and methods of operating belt systems A sprocket arrangement for driving conveyor belts is disclosed which provides improved operation in the presence of abrasives, corrosives and contaminants. The metal sprocket is used with modular plastic belts to produce long wear and improved performance... | 12/15/1992 |
| 5098348 | Drive sprocket for a chain saw A sprocket including spaced rims with sprocket teeth confined between the rims. The rims cooperatively define a configured periphery with link-supporting arc portions located at the teeth tips and flat sections extended between the arc portions. As a side... | 03/24/1992 |
| 5074827 | Reversible chain conveyor sprocket assembly A reversible sprocket assembly for a chain and sprocket drive system includes a sprocket body having an inner hub portion with a central bore and an outer sprocket drive unit including teeth for engaging a drive chain. A coupling, such as mating splines, ... | 12/24/1991 |
| 5074406 | Laminated sprocket A sprocket arrangement which provides increased contact surface area for driving conveyor belts is disclosed. The sprocket is particularly suitable for abrasive applications and/or use with modular plastic belts. The sprocket is formed by stacking and ali... | 12/24/1991 |
| 4832668 | Power transmission chain A chain and sprocket drive in which the chain is constructed of sets of connected links, the links in all sets being constructed to drivingly contact the sprocket teeth with inside flanks only, the links in some sets of links being of a shape which differ... | 05/23/1989 |
| 4819989 | Propulsion systems for mineral mining machines A reactive-track type propulsion system for a mineral winning machine comprises a sprocket chain located along the path of intended movement and a sprocket wheel with teeth meshing with the chain. The wheel is mounted on the machine and driven to propel t... | 04/11/1989 |
| 4715845 | Sprocket wheel for driving saw chain of chain saw A sprocket wheel for driving a saw chain of a chain saw including a pair of annular sprocket wheel members of the same shape and configuration each formed on one side surface thereof with elevated surface portions of a number which is one-half the desired... | 12/29/1987 |
| 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 |
| 4342560 | Composite chain link assembly A power transmission chain adapted to be used with toothed sprockets, the chain having a plurality of sets or ranks of interleaved links, the adjacent sets or ranks of which are connected by pivot means. The links of the chain each have a pair of toes sep... | 08/03/1982 |
| 4168634 | Chain and sprocket power transmitting mechanism A driving and driven sprocket and endless chain arrangement wherein the driven sprocket includes a first set of conventional involute teeth and a second set of modified teeth disposed in respective random patterns, and wherein the modified teeth have the ... | 09/25/1979 |
| 4058021 | Leaf chain and to driving arrangements employing same A limited torque, positive drive transmitting arrangement employs a leaf chain and a fluted pulley which co-operates therewith. The positive drive is transmitted via engagement of the leaf chain link edges with the specially formed pulley flutes, and the ... | 11/15/1977 |
