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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6997434 | Twist cam valve A drain valve including a housing, a poppet, a seal, a follower pin, and a biasing mechanism. The housing defines a passage there-through from a first end to a second end, a cam surface at the second end with at least two detents therein, and at least one slot in th... | 02/14/2006 |
| RE38750 | Fluid valve assembly A fluid valve assembly includes a housing, a valve, a rotatable driver received in the housing in operative communication with the valve, and an over-center linkage disposed between the driver and the housing. The housing includes an entrance to permit fluid flow in... | 07/05/2005 |
| 6536224 | Frozen beverage machine A frozen beverage machine includes a process control block having a plurality of inlets for receiving ingredients and a plurality of outlets. A mixing block has a plurality of inlets connected to the process control block outlets such that ingredients flo... | 03/25/2003 |
| 6311948 | Fluid valve assembly A fluid valve assembly includes a housing, a valve, a rotatable driver received in the housing in operative communication with the valve, and an over-center linkage disposed between the driver and the housing. The housing includes an entrance to permit fl... | 11/06/2001 |
| 6253579 | Valve hamper assembly A valve hamper assembly for a glassware machine having a camming surface and a movable follower surface engaging the camming surface. A movable valve is operatively connected to the follower surface. A movement device is operatively connected to the follo... | 07/03/2001 |
| 5957918 | Fail-safe cryosurgical instrument In a cryosurgical instrument having a dewar and a cap which is threaded onto the dewar when in use, with a main valve portion secured to the cap by threads, the handedness of the threads on the main valve portion are opposite to the handedness of the cap ... | 09/28/1999 |
| 5165654 | Gas control valve A gas control valve including a body having a throat formed in a bore, a post slidably received in the bore and including a plug, a pin laterally engaged on an upper portion of the post, and a spring for biasing the post so that the plug can be separated ... | 11/24/1992 |
| 5117870 | Pinch valve A pinch valve for selectively pinching or releasing a multiple plurality of fluid conduits includes a rotatable single cam as part of a rotor within a stator for locating the fluid conduits. The cam periphery with different lobe surfaces for engaging mova... | 06/02/1992 |
| 5099805 | Variable valve actuating device and method A variable valve actuating device and method are disclosed, the device including a rotatable cam having a selectively configured cam face engagable with a worm drive at an outer engaging surface of the cam, the worm drive being configured for both rotary ... | 03/31/1992 |
| 5067359 | Apparatus for clamping flexible tubes An apparatus for clamping flexible tubing employs one or more plungers as clamps. The plungers are reciprocally moveable by means of a rotatable disk cam which has a cam path on one or both of the faces of the disk, the disk cam being mounted to rotate on... | 11/26/1991 |
| 4989832 | Valve arrangement for filling and emptying a gas container The valve has a residual pressure valve (14) which is known per se, in which however the gas container can be filled through the residual pressure valve. The residual pressure valve (14) is mounted on a stem (32) which is axially displaceable as a result ... | 02/05/1991 |
| 4862884 | Regulator second stage for scuba The regulator second stage for scuba incorporates a semi-balanced valve mechanism of high flow capacity which operates without significant influence from friction. The compression spring is suspended between two axially opposed pins to avoid friction prod... | 09/05/1989 |
| 4848401 | Isolation chamber valve The invention relates to an isolation chamber valve. The isolation chamber valve of the invention includes, for connecting its inlet passage and its outlet passage, a by-pass circuit of small section comprising at least a flap the opening and closing of w... | 07/18/1989 |
| 4834287 | Pressure relief before or upon electric shut off of pump A valve control mechanism for a paint spraying system provides for pressure relief prior to turn-off of the compressor. A pair of interlocking knobs, a pressure control knob and an off-prime-spray knob, are mechanically interlocked so that the compressor ... | 05/30/1989 |
| 4804164 | Flow control device A flow control device comprising a spindle having a disk at its lower end and a handle at its upper end and spring-biased to bring the disk into pressing contact with a disk seat within a case, a closure having a top wall, and at least one rollable member... | 02/14/1989 |
| 4643217 | Automatic valve for use with pool cleaning devices An automatic valve is disclosed for controlling the direction of fluid flow. The valve is particularly suited for use with automatic pool cleaning systems to alternately direct fluid flow to the filtration system of an automatic pool cleaner. The valve in... | 02/17/1987 |
| 4477054 | Precision valve assembly A precision valve assembly for controlling flow of fluids to a patient having a valve element mounted on a diaphragm. At least one ball positioned in a spiral track, when moved toward the center by relative rotation of the spiral track and an opposed long... | 10/16/1984 |
| 4269390 | Cryosurgical instrument A cryosurgical instrument employing a standard, double-walled, metal vacuum bottle or dewer has a collar metallurgically bonded to the top of the dewer near the mouth thereof to provide machined threads for releasably engaging the delivery and control por... | 05/26/1981 |
| 4095774 | Cam regulated flow control valve A conveyor system comprises a conveyor drivable at variable speeds by a hydraulic motor which is controlled by a cam regulated flow control valve. Sensing means responsive to some condition on the conveyor requiring a change in speed (i.e., excessive accu... | 06/20/1978 |
| 4007500 | Bathtub stopper A bathtub stopper for closing the drain passage of a strainer cup of a bathtub according to the present invention consists of a main body portion which has first and second components adapted to telescope longitudinally with respect to one another between... | 02/15/1977 |
