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 |
| 8091468 | Fluid power linear drive device A fluid power linear drive device comprises a housing tube on whose outer periphery an output drive slide can slide linearly. For this purpose on the outer periphery of the housing tube there are two guide face pairs each having two guide faces extending along the h... | 01/10/2012 |
| 7669515 | Magnet type rodless cylinder A pair of cylinder holes 10 are formed in a cylinder tube 2 in the axial direction, a slit 25 is formed between these cylinder holes, and an iron plate 22 is inserted in the slit covering the whole range of the movement of the pistons ... | 03/02/2010 |
| 7644648 | Magnet type rodless cylinder A pair of independent cylinder holes 3, 3 are formed in a cylinder tube 2 of a flat outer shape. When a pressurized fluid is alternately supplied into the cylinder tube 2 through a port 7 formed in an end cap 5, the internal pressu... | 01/12/2010 |
| 7587971 | Pneumatic actuator for precision servo type applications A pneumatic cylinder designed to convert compressed air into mechanical output is disclosed. A piston assembly, sealed at both end by caps, contains and guides the motion of a piston assembly. Pressure forces on the piston assembly are transmitted via a mechanical s... | 09/15/2009 |
| 7568423 | Magnet type rodless cylinder Repulsive magnetic forces in the axial direction of cylinder tubes act between the rows 11 of inner magnets of pistons 10, 10 accommodated in two cylinder tubes 2, 2, and the inner magnets 12 of the pistons 10 come to a halt being ... | 08/04/2009 |
| 7493848 | Magnet type rodless cylinder A magnet type rodless cylinder provided with a slide magnetically coupled with a piston arranged in a cylinder tube and a slide able to move outside of the cylinder tube. The slide has a connection mount detachably attached to it. When attaching the connection mount... | 02/24/2009 |
| 7448311 | Displacement difference-absorbing mechanism for cylinder apparatus A coupler is provided inside an engaging hole of a piston yoke, which is connected to pistons. A slider is installed on an upper portion of the coupler through a coupler-insertion hole. An engaging member, provided at a lower portion of the coupler, is inserted into... | 11/11/2008 |
| 7353748 | Linear actuator and method for processing the same A bent section, which is bent substantially perpendicularly toward a main cylinder body, is formed at one end of a slide table. Further, a pair of ball-rolling grooves, in which a plurality of ball bearings roll, are formed on side surfaces of the slide table oppose... | 04/08/2008 |
| 7293705 | Radio frequency identification method and system of distributing products A method and system for vending products from a defined area, such as a micro-warehouse with a door. The method includes fitting each product with a radio frequency identification tag, positioning the plurality of products in a micro-warehouse, sensing opening and c... | 11/13/2007 |
| 7290477 | Linear drive A linear drive has a drive housing and a carriage guide for relative motion in the direction of a principal axis. The carriage possesses a row of openings on it with several first carriage openings, whereas the drive housing has a row of openings on the housing side... | 11/06/2007 |
| 7290479 | Stop for a slide assembly A rodless slide assembly is provided illustratively having a longitudinally-extending cylinder, a carriage, a stop assembly, and a catch assembly. The longitudinally-extending cylinder includes first and second ends and a path of travel extending therebetween. The c... | 11/06/2007 |
| 7290478 | Stop for a slide assembly A rodless slide assembly is provided illustratively having a longitudinally-extending cylinder, a carriage, a stop assembly, and a catch assembly. The longitudinally-extending cylinder comprises first and second ends and a path of travel extending therebetween. The ... | 11/06/2007 |
| 7258276 | Radio frequency identification method and system of distributing products A method and system for vending products from a defined area, such as a micro-warehouse with a door. The method includes fitting each product with a radio frequency identification tag, positioning the plurality of products in a micro-warehouse, sensing opening and c... | 08/21/2007 |
| 7225722 | Linear drive A linear drive has a drive housing on which a carriage is able to run. For guiding the carriage two guide units are provided, which jointly lie in a guide plane extending perpendicularly to the upright axis of the drive housing. The guide units flank the carriage on... | 06/05/2007 |
| 7207262 | Linear drive A linear drive having a drive housing on which a carriage runs to an adjustable extent. The carriage covers over a channel-like housing recess, which is delimited by two mutually side wall. For limiting the stroke of the carriage a first abutment is provided on it w... | 04/24/2007 |
| 7207432 | Linear motion drive system and rail holder The linear motion drive system is capable of optionally changing a position of a linear rail with respect to a pedestal. The linear motion drive system comprises: a pedestal section; a linear rail arranged in parallel with respect to the pedestal section; a rail hol... | 04/24/2007 |
| 7194949 | Magnet type rodless cylinder A magnet type rodless cylinder comprised of cylinder tube of a double tube structure provided with an outside tube of an elliptical flattened outside circumferential shape and two inside tubes inserted into the outside tube. When pressurized air is supplied alternat... | 03/27/2007 |
| 7191695 | Linear actuator A displacement amount-adjusting mechanism for adjusting the displacement amount of a slide table includes a stopper which faces a cutout formed at a bottom surface of the slide table and which is fixed to an upper surface of a main cylinder body, a first adjuster bo... | 03/20/2007 |
| 7165720 | Radio frequency identification method and system of distributing products A method and system for vending products from a defined area, such as a micro-warehouse with a door. The method includes fitting each product with a radio frequency identification tag, positioning the plurality of products in a micro-warehouse, sensing opening and c... | 01/23/2007 |
| 7128294 | Methods and apparatuses for launching unmanned aircraft, including methods and apparatuses for launching aircraft with a wedge action Methods and apparatuses for launching unmanned aircraft and other flight devices or projectiles are described. In one embodiment, the aircraft can be launched from an apparatus that operates with a wedge action. A launch carriage carrying an unmanned aircraft is pos... | 10/31/2006 |
| 7124861 | Motion control apparatus A brake (10) having application for a linear or rotational motion device includes a housing (120) in which a first piston (140), a wedge (142) and a second piston (144) cooperate to engage a friction facing (136) through a p... | 10/24/2006 |
| 6931982 | Linear actuator A rotation-preventing slide is provided for a linear actuator which includes a housing which defines an internal bore and a piston-rod assembly which linearly moves within the internal bore in response to fluid pressure. The rotation-preventing slide is connected to... | 08/23/2005 |
| 6930415 | Electric linear motor, and secondary for a linear motor An electric linear motor includes a rotor as primary; and a secondary which is spaced from the rotor to define an air gap therebetween for interaction between the rotor and the secondary. The secondary has a carrier with electrically and/or magnetic driving elements... | 08/16/2005 |
| 6910408 | Linear drive with no connecting rod A piston rod-less linear drive (1) has a housing (2) with a longitudinal slot (5) having a moving force coupling member extending through it. The outer slot opening (7) is provided with at least one covering band (33), which is fix... | 06/28/2005 |
| 6874407 | Piston rod-less linear drive A piston rod-less linear drive has an elongated housing containing a guide slide moving in the longitudinal direction. The connection between the entraining member and the guide slide is with the interposition of an abutment unit attached to the guide slide, such ab... | 04/05/2005 |
| 6874406 | Piston rod-less linear drive A piston rod-less linear drive having a drive part adapted for motion in the longitudinal direction of the housing, such drive part being kinematically coupled by way of an entraining member running in a longitudinal slot in the housing with a guide slide arranged e... | 04/05/2005 |
| 6832541 | Linear actuator A linear actuator comprises a piston which is provided in an actuator body and which is displaceable under a pressure fluid, a slide table which is integrally connected to the piston and which is linearly displaceable, a rod which is engaged with the slide table and... | 12/21/2004 |
| 6766727 | Rodless linear drive A piston-rod-less linear drive (1) whose housing (2) possesses a tube body (3) with housing covers (4) mounted at terminal sides. The tube body (3) is provided with a longitudinal slot (16) which is covered over by an intern... | 07/27/2004 |
| 6766204 | Alignment of master and slave in a minimally invasive surgical apparatus This invention relates to establishing alignment or a desired orientational relationship between a master and a slave of a telerobotic system. The invention can advantageously be used in a surgical apparatus. A method of establishing a desired orientational relation... | 07/20/2004 |
| 6694865 | Belt guide mechanism Belt guide members guide an upper belt and a lower belt for closing a slit of a cylinder tube. Belt holder sections for the upper belt and belt separators for separating the upper belt and the lower belt from each other are integrally formed in the belt g... | 02/24/2004 |
| 6647859 | Belt-fixing mechanism First and second adjusting screws are screwed into screw holes of an end plate respectively. An upper belt is interposed between the second adjusting screw and a fixing member. Either one or both of the first adjusting screw and the second adjusting screw... | 11/18/2003 |
| 6584887 | Linear motor device A linear motion device having an elongated body a carriage moveable in a linear path relative to the body and a bearing positioned between the carriage and body for supporting the carriage for movement along the linear path. The device further includes a ... | 07/01/2003 |
| 6581508 | Linear actuator with shock-absorbing mechanism A plurality of shock absorbers 14 are disposed in parallel to each other in different positions on the left and right in a slide table 13 with push rods 14a for expanding and contracting projecting outside from opposite end faces of the slide table 13 in ... | 06/24/2003 |
| 6553892 | Mounting structure for piston packing A piston packing has a mounting surface and a seal surface. The seal surface and the mounting surface are fitted with a head and an annular groove portion, respectively, of a piston.... | 04/29/2003 |
| 6539834 | Slide table unit Two rods 2 and 3 disposed in parallel to each other are supported through hydrostatic bearings 8 and 9 on a main body block 1, one end portions of the rods project from opposite faces facing each other of the main body block, and the projecting ends of th... | 04/01/2003 |
| 6505542 | Piston rod-less linear drive and a housing therefor A piston rod-less linear drive whose housing is provided with a linear guide on which a guide slide runs. The guide slide is drivingly connected by way of a dog with a drive part within the housing. The dog extends through a longitudinal slot in the housi... | 01/14/2003 |
| 6481334 | Rodless cylinder A cylinder tube which is a main part of a rodless cylinder is mounted with stopper members through end plates. The stopper members are provided with adjuster bolts to restrict the moving range of a slide table and shock absorbers to buffer impact given wh... | 11/19/2002 |
| 6474217 | Rodless cylinder In a cylinder tube of a rodless cylinder, a bore having an approximately rhombic cross section is formed. The approximately rhombic cross section of the bore has a thickness smaller than a width. There is a fluid bypass passage for centralized piping in t... | 11/05/2002 |
| 6427578 | Rodless cylinder A rodless cylinder comprises a cylinder tube having, at its inside, a piston which is movable back and forth in a longitudinal direction; fluid bypass passages defined at the inside of the cylinder tube to extend in the longitudinal direction; and a pair ... | 08/06/2002 |
| 6425315 | Seal structure for rodless cylinder A seal member includes a first seal portion inscribed on the outer circumferential surface of a small projection in an end cover, a second seal portion circumscribed around the inner surface of a cylinder tube, and a size expanded portion continuing from ... | 07/30/2002 |