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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7452134 | Bearing assemblies with seals A bearing assembly (A-H) enables one member (4) to rotate relative to another member (2) about an axis (X). It includes a bearing (6) having an inner race (54) on one of the members, an outer race (74, 126, 164, 250) in the other m... | 11/18/2008 |
| 7354216 | Grease seal cup to retain lubrication for life extension in existing splined joint A grease seal cup for a splined joint between a drive shaft and a driven shaft comprises a cylindrical portion adapted to form a seal with the outer surface of the drive shaft and a seal with a sealing member, such as a spanner nut, of the driven shaft. The grease s... | 04/08/2008 |
| 7311448 | Bearing arrangement for a harvesting machine A bearing arrangement for a harvesting machine, including a bearing configured to couple a rotatable shaft with a chassis of the harvesting machine, a first element coupled with the shaft so as to be rotatable therewith, and a second element coupled with the chassis... | 12/25/2007 |
| 7083385 | Axial flow fan motor An axial flow fan motor having an impeller molded integrally with a shaft from a synthetic resin. The shaft is easily assembled with a bearing arrangement by being brought into tight contact with the inner ring of the bearing arrangement and is reliably fixed theret... | 08/01/2006 |
| 6994351 | Mechanical seal device and method for a scraped surface heat exchanger A sealing method and apparatus is provided for sealing between a rotating shaft and a fixed housing such as found in scraped surface heat exchangers. The sealing apparatus and method includes a sealed cartridge where a gland and a trapped seal ring can be releaseabl... | 02/07/2006 |
| 6786644 | Sealing device for rolling bearings Sealing device (1) for a rolling bearing (2) including: an inner race (5), which is axially blocked by a blocking element (4) suitable for being arranged in contact with a reference element (6); a distance ring (8) which is ... | 09/07/2004 |
| 6068407 | Seal for an anti-friction bearing The invention permits stacking of seals without possibility of the sticking of their synthetic rubber seal members to one another. Moreover, when assembling the seals to produce anti-friction bearings, the invention permits storing the seals as a stack in... | 05/30/2000 |
| 5957591 | Anti-friction bearing To permit stacking of seals without possibility of the stacking of their synthetic rubber seal members to one another, permit, when assembling the seals to produce anti-friction bearings, storing the seals as a stack in a stocker of an automatic assembler... | 09/28/1999 |
| 5704719 | Street sweeper bearing with wear resistant resiliently biased face seal A bearing assembly having primary seals between inner and outer races on opposite sides of roller elements and an auxiliary face seal on at least one end thereof. The auxiliary seal includes a cap fixed to the inner race, and axially movable face seal mem... | 01/06/1998 |
| 5649771 | Double faced speed regulated mechanical seal This invention discloses a roller or ball bearing assembly, a bearing finger cage and a mechanically interlocked double faced speed regulated mechanical seal arrangement. The selection of the radius of the rolling bearing diameters determines the rotation... | 07/22/1997 |
| 5538259 | Sealing device with centering ring for a water pump The sealing device has a casing and a shaft extending through the casing. A bearing housing with an outer ring bearing is received in the casing. The shaft is rotatably supported in the bearing housing. A slide ring sealing unit including a slide ring, a ... | 07/23/1996 |
| 5458421 | Needle roller bearing A needle roller bearing (1) comprising an outer bearing ring (6), an inner bearing ring (8) arranged on a shaft (3) and needle rollers (9) which roll on mutually facing peripheral surfaces of said outer and inner bearing rings (6,8), characterized in that... | 10/17/1995 |
| 5397187 | Harrow plow and method A bearing assembly is disclosed for use with a disk harrow plow in which interior collars are provided to engage each other in a lap face relationship, and where the lap face is fed by an adjacent chamber with a lubricating medium.... | 03/14/1995 |
| 5344087 | Device for producing granulate A machine for producing granulate from meltable compounds comprises a stationary inner drum and a rotary outer drum mounted on the inner drum. Melted compound contained within the inner drum drips onto a cooling belt when openings in the outer and inner d... | 09/06/1994 |
| 5186547 | Roller bearing and seal assembly A roller bearing seal assembly for supporting the drive rolls of a continuous casting machine including an angle ring forming a sealing gap and a lamellar ring seal between the angle ring and a bearing or bearing housing. The angle ring has an axially dir... | 02/16/1993 |
| 5009519 | Sealing assembly for relatively movable members A sealing member for relatively movable, e.g., rotating or reciprocating, members comprises a pair of annular rings each with a radially extending wall and an axially extending wall defining an annular seal gland. An elastic spring member compression-load... | 04/23/1991 |
| 4881829 | Submersible bearing assembly A submersible bearing assembly for a shaft includes a stationary housing that is horizontally split and a roller bearing mounted within the housing and which is also horizontally split. One end of the housing is closed and the other is open. A labyrinth s... | 11/21/1989 |
| 4861315 | Flexible internal universal joint seal A seal is for a universal joint of the type comprising a cross having trunnions with annular shoulders therearound and with a bearing cup for each of the trunnions with the bearing cup having an interior shoulder adjacent the open end thereof. The seal is... | 08/29/1989 |
| 4854743 | Rear seal assembly for a chamber holding a partially frozen beverage The present invention includes a rear seal assembly that holds and seals a rotatable shaft extending through the cooling chamber and extending axially outboard through a rear wall in the cooling chamber. In the interior of the cooling chamber, the seal as... | 08/08/1989 |
| 4841183 | Dynamoelectric machine construction and method A dynamoelectric machine or electric motor construction is disclosed in which the motor has a cylindrical shell having a stator core press-fitted therein and positioned axially with respect to the shell at a predetermined position. The stator core has a c... | 06/20/1989 |
| 4805919 | Bearing seal A novel seal for transversely sealing a bearing includes a seal body formed from a stiff, homogeneous material. The seal body is adapted to be received at outer race groove and inner race land. The seal is characterized by a set of annular hinges formed i... | 02/21/1989 |
| 4799808 | Compact seal A compact seal assembly fits into the end of a bearing and effectively retains grease within the bearing while excluding contaminants, notwithstanding operation of the bearing within a hostile environment. The seal assembly includes a shield having an axi... | 01/24/1989 |
| 4763904 | Sealing apparatus An auxiliary sealing system generally includes a flexible sealing ring, with an optional restraining element, such as a metal band, secured therearound for further fastening same to a given circular member. Such circular member may comprise an extension o... | 08/16/1988 |
| 4709629 | Roll with pressure chamber for detection control In a floating roll the abutment faces of the transverse seals at the crosshead are not radial or axial but have an orientation corresponding to a spherical surface, the center of which is situated in the center of the adjacent bearing on which the cylinde... | 12/01/1987 |
| 4707150 | Fluid pressure assisted rotary shaft seal with grooved seal wedge An annular elastomeric seal wedge of diamond shaped radial cross section under axial compression has opposite axial ends fitted within V-shaped cross section annular grooves within a radially projected shoulder of a bushing of a fluid pressure assisted ro... | 11/17/1987 |
| 4687350 | Sealed bearing for ring roller of cold pilger rolling mill A sealed bearing arrangement for the ring rollers of a cold rolling mill is provided with a rolling bearing mounted on a journal of a rolling shaft and seated in the bore of a chock, and a pair of housing covers fastened to said chock on respective sides ... | 08/18/1987 |
| 4653936 | Bearing bushing with inserted sealing ring A bearing bushing is provided with a sealing ring having a conical bore surface on the side remote from the side at which a shaft is inserted. The rim of the bearing bushing is provided with a concial surface which cooperates with the conical surface of t... | 03/31/1987 |
| 4611932 | Bearing bushing for universal joints In combination, a bearing bushing for universal joints of generally cup-like form, a sealing ring for sealing a space between the bearing bushing and a shoulder of a machine part supported in the bushing, a circumferentially extending radially inwardly di... | 09/16/1986 |
| 4530675 | Internal universal joint seal with multiple lips An internal seal is provided for a universal joint, which seal is more effective in retaining lubricant and in preventing the ingress of water and contaminants. Each trunnion of the joint is received in a bearing cup having an open end with an internal an... | 07/23/1985 |
| 4502739 | Roller bearing seal The roller bearing seal includes a ring-shaped member integrally connected to an outer race of the roller bearing. The ring-shaped member has an outer lip portion that is spaced a predetermined amount from the inner race of the roller bearing so as to pro... | 03/05/1985 |
| 4496199 | Pillow block assembly and sealing system therefor This invention relates to an improved pillow block characterized by a cast body containing a main bore for housing an antifriction bearing and cast bolt-receiving slots for mounting same and for attaching endplates thereto that do away with the need for d... | 01/29/1985 |
| 4492416 | Cable wheel mounting for cable cars The wheel mounting of the present invention is designed particularly for use in cable car structures at intersecting street corners, that is, where the cable is carried around a curve. The structure comprises, briefly, a pair of normally vertically spaced... | 01/08/1985 |
| 4351533 | Face seal with rotatable seal ring A face seal assembly (10) having an intermediate seal ring (38) is disclosed. The intermediate seal ring (38) is disposed between a pair of opposing metal seal faces (36,37) of the seal assembly (10) so that the faces (36,37) contact opposite sealing face... | 09/28/1982 |
| 4348067 | Bearing seal A seal for a bearing having a housing with an opening therein for receiving a shaft, in which a sleeve is disposed in the housing opening and has an axial bore therethrough for receiving a shaft. The sleeve has a labyrinth seal section having intermeshing... | 09/07/1982 |
| 4253713 | High integrity fluid pressure rotary shaft seal A neoprene boot fixes a static race of a rotary shaft seal within a housing bore. An annular rotating race bears a carbon insert laterally mated to the radial face of the static race. A bushing borne by the rotating shaft supports a neoprene seal sleeve o... | 03/03/1981 |
| 4235480 | Seal ring for drill bit assemblies A sliding seal ring for a drill bit comprising at least one cutter rotatably mounted on a journal forming part of the drill bit body. The seal ring is made of elastic metallic strip material and is of spiral configuration with the spirals in overlapping r... | 11/25/1980 |
| 3976341 | Seal Seal having an annular-shaped carbon ring, a bellows adjacent the carbon ring and a retainer surrounding both. A spring drivingly connects the retainer with another larger retainer which surrounds the seal.... | 08/24/1976 |
| 3960415 | Bearing structure with improved seal arrangement An improved seal arrangement for a drive mechanism of the type having a rotating member and a radially spaced stationary member with a bearing mounting the rotating member on the stationary member, as in a clutch assembly for an air conditioning compresso... | 06/01/1976 |
