Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 4452233 | Solar energy collector A solar energy collector of the kind which heats a fluid employs removable energy transfer tubes having an outer glass envelope and an evacuated space between the envelope and an inner metal tube. A manifold is provided to which is connected a number of i... | 06/05/1984 |
| 4441219 | Lavatory accessory An accessory intended to be added to an existing toilet aids personal hygiene by providing a cleansing jet of either water, or water plus a liquid soap fluid, to provide a cleansing and washing action to a person following use of the toilet. Water plus a ... | 04/10/1984 |
| 4430950 | Incinerator An incinerator for burning waste material employs an additional grate on which waste material is burned, thereby producing a layer of heated ashes and coke. The smoke and gases produced by the burning waste material are caused to be passed downwardly thro... | 02/14/1984 |
| 4423970 | Printing apparatus Printing apparatus for printing characters in a line on paper has a print drum arranged horizontally with respect to the paper and is formed having the indexing means and the translational drive means affixed to the frame to greatly decrease the mass of t... | 01/03/1984 |
| 4423602 | Synergistic air conditioning and refrigeration energy enhancement method The invention is an energy saving method that subcools previously condensed refrigerant causing an increase in the net refrigeration effect. A water pump is used to circulate cold water stored in a tank through a counter flow heat exchanger which is conne... | 01/03/1984 |
| 4409275 | Decorative laminate A decorative laminate comprising a substrate, a foam adhered thereto and a top layer of clear film with a decoration encapsulated between the foam and the film, together with a method for manufacturing said laminate. Additives in the nature of fire retard... | 10/11/1983 |
| 4397920 | Adapter permitting smaller size battery cell to function in larger size applications Adapter for permitting a smaller standard size battery to be used in applications requiring dimensionally larger standard size battery cells. The adapter can be economically formed of plastic and is intended to permit an AA size cell to be used in C and D... | 08/09/1983 |
| 4395168 | Multiple cutter rotary tool A tool for use with a rotary drive is provided with a number of differently formed slots therein to receive different cutting blades in various orientations. The tool is adaptable for cutting in a radial direction and in an axial direction and can accommo... | 07/26/1983 |
| 4375637 | Integrated alarm, security, building management, and communications system A fully integrated alarm, communication, and building management system has a central control station and a plurality of remotely located sensing and controlling devices. Each remote device has an individual digital address, which is a parallel address pr... | 03/01/1983 |
| 4372742 | Arithmetical teaching aid An arithmetical teaching aid includes a display board B comprising a rectangular array of display areas A arranged in rows R and columns C. Adjacent display areas A are marked (1, 10, 100 etc.) to represent successive powers of an arithmetic base number s... | 02/08/1983 |
| 4366839 | Material processing apparatus A system for selectively dispensing and/or mixing or otherwise utilizing materials contained in respective storage tanks, including a material conveyance means, such as a pump, and a specialized selector valve programmably controllable to supply the mater... | 01/04/1983 |
| 4360860 | Self-contained hand held portable lantern-flashlight consisting of a manually operated generator and rechargeable batteries A unitary portable flashlight assembly incorporating a hand operated generator and rechargeable batteries, such as the pressure vented nickel-cadmium type with welded electrodes. The generator is designed and operated to charge th batteries at a high rate... | 11/23/1982 |
| 4352259 | Movable inflatable ceiling or partition for greenhouse use An inflatable movable ceiling or partition is installed in a greenhouse to limit the interior volume of the greenhouse which must be heated by artificial means. The tubes are inflatable transparent plastic tubes, which are arranged longitudinally in the g... | 10/05/1982 |
| 4350429 | Material processing apparatus A system for selectively dispensing and/or mixing or otherwise utilizing materials contained in respective storage tanks, including a material conveyance means, such as a pump, and a specialized selector valve programmably controllable to supply the mater... | 09/21/1982 |
| 4347944 | Cover for a cylinder-shaped pressure container Cover for a cylinder-shaped pressure container such as a vacuum impregnation container or an autoclave which at the mouth edge has members for holding a tight fitting closure member against the mouth edge which members contrary to previously known and com... | 09/07/1982 |
| 4345861 | Universal tank and ship support arrangement A support system for large generally cylindrical tanks in ships and including four supporting devices each comprising a tank portion and a hull portion respectively secured to the tank and hull, one of the supports being fixed with respect to linear horiz... | 08/24/1982 |
| 4346354 | Amplitude modulator using variable width rectangular pulse generator A method and apparatus for amplitude modulating a carrier signal with an audio or information input signal utilizes an arcsine generator to cause the envelope of the carrier to follow the input signal. The invention stems from the realization that if rect... | 08/24/1982 |
| 4342985 | Remote sensing and control system A remote sensing and control system wherein a plurality of remote sensing units are connected to a central control and monitoring console by only four interconnecting wires. A clock signal is converted to a plurality of parallel address signals at the loc... | 08/03/1982 |
| 4342013 | Bidirectional power line filter A bidirectional power line filter provides distributive capacitance to accomplish filtering is electrically connected between the power lines and the ground wire in a power distribution system. In addition to lumped parameter or fixed value capacitors, a ... | 07/27/1982 |
| 4340810 | Method and apparatus for merchandise distribution control A merchandise distribution control system employs specialized labels and requires no writing by loading or shipping dock personnel. All labels and tabs are preprinted or printed at the same time and bear the appropriate store identification number and car... | 07/20/1982 |
| 4332016 | Method, apparatus and transducer for measurement of dimensions A method, a device and a transducer for dimensional measurement of objects by means of ultrasonics, where the objects are carried past at least an ultrasonic measuring device consisting of a combined transmitter/receiver or separate transmitter/receiver. ... | 05/25/1982 |
| 4329386 | Decorative laminate A decorative laminate comprising a substrate, a foam adhered thereto and a top layer of clear film with a decoration encapsulated between the foam and the film, together with a method for manufacturing said laminate.... | 05/11/1982 |
| 4328552 | Statistical calibration system A calibration method and apparatus, which may be used for calibration and characterization of nonlinearities in electronic components or systems, functions at all frequencies up to and including ratio frequencies. The system under calibration is driven wi... | 05/04/1982 |
| 4327756 | Cleaning machine A can cleaning machine having a lower conveyor belt and an extended coacting upper hold down belt is provided with a blow off unit at each successive stage of the cleaning operation. By extending the hold down belt and providing multiple blow off stations... | 05/04/1982 |
| 4323091 | Pan wash energy Apparatus for washing baking pans or the like comprises a pair of side-by-side hot washing solution tanks with a hot spray chamber mounted above each tank and with an endless belt conveyor which passes the articles successively through the spray chambers ... | 04/06/1982 |
| 4319229 | Alarm system having plural diverse detection means A system for detecting a fire emergency condition employs three separate and diverse sensors; a heat detector, a smoke detector, and an infrared radiation detector. Either or all of these detectors can activate the alarm. Additionally, the infrared radiat... | 03/09/1982 |
| 4319204 | Phase modulated square wave generator A pair of square waves of a carrier frequency are applied respectively to a pair of amplifier circuits having a common output circuit. The output circuit is connected so that the energy therein is dependent upon the relative phases of the square waves. A ... | 03/09/1982 |
| 4318088 | Security fence system A security fence system in which single-strand wires are arranged in pairs and stretched between conventional fence posts. Electrical current is passed through the pair of wires which are arranged such that upon disturbing the wires by attempting entry in... | 03/02/1982 |
| 4312544 | Brake actuating system The present invention is a brake actuating and brake system for maintaining a predetermined proportional relationship between the rotational speeds of vehicle wheels by both applying and/or releasing hydraulic fluid brake pressure, and distributing releas... | 01/26/1982 |
| 4311977 | Output transformer An output transformer, especially useful to couple a balanced output stage to an unbalanced load, employs first and second primary winding halves, which have their "center taps" physically offset, and wherein the windings are wound coextensively for some ... | 01/19/1982 |
| 4311046 | Multiple sensing device and sensing devices therefore A multiple sensing device has sensors, mounted on a common rotatable shaft, for sensing magnetic field, electric field, gas flow, angular acceleration and linear acceleration. The latter three of the sensing devices employ piezo electric crystals as the s... | 01/19/1982 |
| 4307606 | Thermal transition zone sensing and indicating system The location of a thermal transmition zone in a water storage tank is detected by a number of temperature responsive electrical elements arranged on the exterior surface tank, out of contact with the water, and at selected locations thereon corresponding ... | 12/29/1981 |
| 4306054 | Process for the production of epoxide resins The invention relates to the continuous production of epoxide resins of low, medium and high molecular weight, and also to their purification and to that of the waste water. No raw materials are required in addition to epichlorohydrin, 2,2-bis-(4-hydroxyp... | 12/15/1981 |
| 4304405 | Friction adaptor for competitive games The invention covers a friction adaptor enabling a simulated player in a table game such as soccer or hockey to strike a ball or the like independently with one foot or extension member, and to make a full turn on the other foot or member.... | 12/08/1981 |
| 4299406 | Motorcycle safety system A system for preventing injury to a motorcyclist in the event of a crash employs a rigid framework surrounding the upper body of the cyclist and inflatable air bags which both surround the cyclist with the ballooning air cushion and also serve to draw the... | 11/10/1981 |
| 4296829 | Hook-shaped part of a behind-the-ear hearing aid A hook shaped part (2) for a behind the ear hearing aid. The hook shaped part is hollow and at one end (5) formed to be connected to an acoustic output from the upper front end of the hearing aid case (1) and serving to transmit sound from the hearing aid... | 10/27/1981 |
| 4293846 | Remote selective switching system for use with AC power line The a-c power distribution system used to energize various loads is also used to carry signals for controlling the operation of such various loads. A control station places an r-f pulse burst on the a-c power line to which is connected the controlled stat... | 10/06/1981 |
| 4283987 | Explosive release clamp system An explosive release clamp adapted to be opened suddenly by electrical initiation of an explosive charge, and a safety pressure release system for closed vessels such as chemical reactors, high pressure storage tanks, or the like, wherein one or more such... | 08/18/1981 |
| 4281438 | Flat combing machine The "cleaning-out" capability of a flat combing machine is increased by decreasing the distance between the jaw of the tong of the flat comber and the points of the opposed rows of needles on the round comber to a minimum distance and keeping this minimum... | 08/04/1981 |
| 4269115 | Piston/cylinder type elements and compactors embodying those elements A piston/cylinder type element particularly suited for embodiment in a refuse compactor as the ram thereof comprises adjustable guide means for guiding the piston-like element in sliding movement within the cylinder. The guide means are adjustable to acco... | 05/26/1981 |