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 |
| 8047924 | Riding simulation system A method of providing a simulated bull ride includes guiding a rider to sit on an artificial bull in a bull chute, translating the artificial bull out of the chute along a slidably-coupled track and pivoting the artificial bull about a plurality of pivot points on a... | 11/01/2011 |
| 7828666 | Rodeo or riding device A riding device includes one or more cranks rotatably attached to a base, and a rider support supported on a carrier and movable relative to the base for supporting a rider, the carrier has a front portion for swinging relative to the base and a rear portion pivotal... | 11/09/2010 |
| 7448953 | Structure of a horse riding machine The invention provides a structure of a horse riding machine and directs to a mechanism composed of a swinging device and a guiding device. The mechanism can produce the back-and-forth motion, the swinging motion, and the left-and-right and up-and-down motions and t... | 11/11/2008 |
| 7121831 | Balance practicing machine A balance practicing machine that offers simplified control, reduced cost, and a compact drive assembly that reduces the space requirement for the machine. The machine includes an output shaft from one side of a power source to impart three movements to the seat in ... | 10/17/2006 |
| 7104927 | Riding device A riding device includes a bottom base and an intermediate base pivotally positioned on the bottom base and having its front and rear end respectively and pivotally provided with two front and two rear swing arms. A seat plate positioned over the intermediate base h... | 09/12/2006 |
| 6964614 | Riding device A riding device includes an intermediate base pivotally assembled on a bottom base and having the opposite ends respectively provided with a front and a rear vertical spindle. The front spindle has each end fixed with a crank, and the rear spindle has each end movab... | 11/15/2005 |
| 6517443 | Wheelchair accessible amusement ride A wheelchair accessible amusement ride having a solid non-moving base to which a body that rocks back and forth on the base is mounted. The interior of the body is supplied with a seat that may move between a first position for use with able bodied childr... | 02/11/2003 |
| 6402626 | Bucking machine A rodeo rider training apparatus is formed by a retractable wheel horizontal base frame supporting a spin wheel, a motor spin wheel driving apparatus and a spin shaft supporting a bucking apparatus in turn supporting a rider support for simulating a bucki... | 06/11/2002 |
| 5180338 | Riding toy mechanism A riding toy mechanism which provides both lateral and vertical reciprocating motion in which the amplitude of the vertical reciporcating motion is not determined by the amplitude of the lateral reciprocating motion. The mechanism includes a slide member ... | 01/19/1993 |
| 4962921 | Inflatable aquatic device An inflatable device comprised of one or more inflatable chambers in a configuration suitable for supporting a person thereon. Remote control means 18,20 are included for accomplishing a cyclic inflation and deflation of at least one of the inflatable cha... | 10/16/1990 |
| 4329809 | Bucking amusement apparatus A multi-purpose amusement apparatus simulating the action of a bucking animal, such as a bull or horse, and which is an apparatus for mounting by a person, the apparatus generally simulating the appearance of the animal and installed in the bed of a pick-... | 05/18/1982 |