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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6473936 | Damping mechanism The present invention provides a damping mechanism capable of varying the moving speed of an openable door or the like in stages as necessary. Such damping mechanism includes a damping body (1) installed with a damper mechanism and allowing a rotative sha... | 11/05/2002 |
| 5909848 | High pressure liquid rotary nozzle with coil spring retarder A high pressure liquid nozzle housing encloses a self-rotating speed-controlled nozzle. A cylindrical sleeve in the housing forms an inwardly facing friction surface engageable by a nozzle-driven friction generating speed control mechanism to provide incr... | 06/08/1999 |
| 5788021 | Automatic outputshaft locking mechanism for electric tools An automatic output shaft locking mechanism for electric tools, and particularly a locking mechanism in which the output shaft is driven by electric power and will automatically lock in position when it is turned by an external force, including a retainin... | 08/04/1998 |
| 4762205 | Flight control surface actuator for aircraft including remote braking failure detection An actuator system for positioning a flight control surface on an aircraft in which a primary braking device provides a continuous braking action to the actuator screw shaft by means of a load bearing disc brake wheel and a pair of rachet wheels contiguou... | 08/09/1988 |
| 4605110 | Brake actuator for bicycles and the like In a crankshaft operated brake actuating device for bicycles, a brake operating lever extends through the lower bracket from a yoke contacting the crankshaft. A light weight spring clutch transmits torque from the crankshaft to the lever upon back pedalli... | 08/12/1986 |
| 4199046 | Brake actuator for bicycles and the like A coaster brake for a bicycle has a brake operating lever consisting of a yoke and integral arm coupled to the pedal crankshaft of the bicycle by a self-acting unidirectional friction clutch, formed by a coil spring embracing the crankshaft. In order to f... | 04/22/1980 |
