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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5061996 | Ground vehicle head up display for passenger A ground vehicle heads up display includes a video program source and a display device for producing a set of visual images corresponding to the video program. A mirror, preferably disposed on the vehicle windshield, reflects an image of the display devic... | 10/29/1991 |
| 5056514 | Endotracheal stethoscope A stethoscopic device for use with an endotracheal tube of the type adapted to be inserted through the mouth cavity of a surgery patient and into the trachea of the patient to position the outer end of the tube exteriorally of the patient's mouth and posi... | 10/15/1991 |
| 5055354 | Transparentized paper and method for its manufacture Transparentized paper, free of residual solvent, is fabricated by coating a web of paper with a solvent-free transparentizing medium, allowing the medium to remain on the paper for a period of time sufficient to saturate part but not all of the thickness ... | 10/08/1991 |
| 5054508 | Fuel tank vent system and diaphragm valve for such system A fuel tank vent valve disposed between the tank and a carbon canister to provide high volume venting between the tank and the canister under normal operating conditions. A diaphragm type control element within the valve pulls an internal valve plate agai... | 10/08/1991 |
| 5054380 | External booster for forced air heating air conditioning system An external, air circulation booster which fits over a register of a forced air central air conditioning and heating system. The booster includes a housing having front, rear, side and top panels, and an air intake shroud formed on the bottom of the housi... | 10/08/1991 |
| 5054316 | Volumetric measuring apparatus The present invention provides for an acoustical volumetric measuring apparatus which utilizes a variable volume standard cavity. The variable volume standard cavity is preferably formed of a threaded two-piece cylinder which changes volume upon rotation ... | 10/08/1991 |
| 5054305 | Multiple function hydraulic apparatus An apparatus for performing mechanical operations such as piercing, punching and forming on a workpiece wherein the apparatus includes a carrier, a ram mounted for reciprocal movement on the carrier, a first fabricating tool mounted on the ram, a piston a... | 10/08/1991 |
| 5053781 | High resolution passive microwave sensors for earth remote sensing The present invention is a microwave radiometer for passive microwave remote sensing of the earth's surface. This microwave radiometer is formed as a cross array including a vertical linear array pointed toward nadir and a perpendicular horizontal linear ... | 10/01/1991 |
| 5053612 | Barcode badge and ticket reader employing beam splitting This invention is a badge and ticket barcode reader which meets the need in the art for a cost effective and reliable barcode reader for naive users. It employs a charge coupled device type scanner in conjunction with a beam splitter, an illumination sour... | 10/01/1991 |
| 5050430 | Magnetostrictive linear position detector with temperature sensors The present invention is a combined magnetostrictive linear displacement detector and plural location temperature detector. The combined apparatus produces a composite signal for transmission on a 2 wire transmission line. The resistances of the temperatu... | 09/24/1991 |
| 5048928 | Computer screen magnifier A holder for adjustably positioning a flat-sheet magnifier proximate a visual display terminal comprises a mounting for retaining the magnifier and a support for extensibly positioning the mounting in a predetermined, spaced-apart relationship with the te... | 09/17/1991 |
| 5046006 | Mutual missile control system A system for controlling the nuclear arsenals of two adversaries. The system includes a central control computer that is in communication with at least two command terminals, each operated by one of the adversaries. The central control computer is in comm... | 09/03/1991 |
| 5045988 | Isolated adjustable frequency AC inverter control The control for an AC inverter includes a low voltage microcontroller referenced to ground potential and a waveform generator coupled to the microcontroller through a serial data link including optical isolation devices. The waveform generator floats at t... | 09/03/1991 |
| 5044924 | Gas assisted injection molding apparatus A gas assisted injection molding apparatus of the type in which a supply of resin is introduced into a cavity in a mold at a resin injection location and a gas injection assembly is provided to introduce gas into the mold cavity at a gas injection locatio... | 09/03/1991 |
| 5042450 | Arrow support for an archery bow An apparatus for supporting an arrow on an archery bow. The apparatus having an adjustable resilient finger member which is circumferentially adjustable on an annular frame member. The finger member being tapered so that the resiliency decreases in magnit... | 08/27/1991 |
| 5042396 | Plastic pallet A plastic pallet in which an insert assembly is positioned within the hollow of the plastic pallet to discourage warpage and failure especially in racked, storage situations. The insert assembly comprises a pair of beams arranged in an X-configuration, to... | 08/27/1991 |
| 5042133 | Testing method for electric shift control apparatus A method of providing a pretested electric shift control apparatus for a motor vehicle including an operator input push-button unit for mounting in the instrument panel of the motor vehicle, a power unit for mounting on the transmission of the motor vehic... | 08/27/1991 |
| 5040135 | Method of fringe-freezing of images in hybrid-optical interferometric processors The invention is a method for obtaining fringe visibility in hybrid-optical interferometric processors. Encoded data defining an image is utilized to provide both a timing input signal and a method of modulating a light source in synchronization with the ... | 08/13/1991 |
| 5039629 | Hybrid ceramic composition and process for its manufacture A hard, corrosion resistant, non-porous hybrid ceramic material is fabricated from a greenware article comprised of a refractory powder, glass frit, and an acidic phosphate compound. The greenware article does not liquify during firing and hence retains s... | 08/13/1991 |
| 5039463 | Gas assisted injection molding A method and apparatus for gas assisted injection molding. The apparatus includes a bulk storage container; a booster receiving the gas from the bulk storage container and operating to boost the pressure to a relatively high level for delivery to a high p... | 08/13/1991 |
| 5038987 | Bow support apparatus A center-mount bow-string holder is provided for use by an archer, e.g. with a sling, for carrying a bow or standing with an armed or unarmed bow. The holder includes spaced-apart hooks for supporting a horizontally held bow-string. For support, the bow-s... | 08/13/1991 |
| 5038792 | Oxygen consumption meter An indirect calorimeter for calculating the metabolic rate of a subject by measuring the oxygen consumption during respiration over a period of time includes a gas flow meter providing output electric signals to a microprocessor which drives a display and... | 08/13/1991 |
| 5036911 | Embossed plate oil cooler A plate and fin type heat exchanger is disclosed for cooling automotive engine oil, transmission fluid and power steering fluid. The heat exchanger is formed of a plurality of stacked plate pairs with louvered fins located therebetween. The plate pairs ar... | 08/06/1991 |
| 5038050 | Junction relay box In a combination junction box/fuselink relay box system comprising separate junction and fuselink relay boxes adapted to be mechanically coupled, the junction box and fuselink relay box are each provided with complementary fuselink socket portions which m... | 08/06/1991 |
| 5035158 | Electric shift and transfer case apparatus with control system therefore An electronic control system for a motor vehicle automatic transmission assembly of the type including an automatic transmission and a transfer case connected to the output of the automatic transmission. The automatic transmission has a mode select shaft ... | 07/30/1991 |
| 5035100 | Wall slab and building construction A concrete slab, and a building construction system employing the concrete slab, in which the slab is formed in a casting or extrusion process to include a plurality of longitudinally extending core passages, and a groove extending transversely across one... | 07/30/1991 |
| 5033762 | Suspension system for a sidecar motorcycle A suspension system for a sidecar-type motorcycle which operates to maintain the motorcycle in a level, vertical disposition irrespective of uneven terrain being traversed by the motorcycle. The sidecar wheel is mounted on a beam which is pivotally mounte... | 07/23/1991 |
| 5033479 | Laser beam resistant materials A method and a system are provided for protecting patients and equipment from the damaging effects of stray laser light emissions. Porous barrier materials are selected to have a pore geometry functionally related to the wavelength of emitted laser so as ... | 07/23/1991 |
| 5032193 | Method of making synthetically engineered materials A process for fabricating synthetic materials, such as "atomic ceramics", by atomic alloying of a host material. Energetic modifier elements or species are introduced into the host matrix of a fluidic precursor material so as to obtain an engineered mater... | 07/16/1991 |
| 5031918 | Magnifying marker for a game board A marker for use in playing lotto games such as bingo is made from a transparent rigid material having a flat bottom surface and a convex upper surface. The marker is sized to cover the indicia on the bingo card and to magnify the indicia thereunder. The ... | 07/16/1991 |
| 5030997 | Toner dispenser for xerographic machines A toner supply and dispensing cartridge for use with a xerographic copying machine. The cartridge includes a cylinder which contains a supply of particulate toner material, the cylinder having a plurality of toner dispensing ports formed along the longitu... | 07/09/1991 |
| 5027748 | Pet litter box A waste disposal system includes a generally rigid support skeleton defining an interior space configured to receive refuse and a flexible, bag-like member supported by, and enclosing therewithin the support skeleton. The waste disposal system may be adva... | 07/02/1991 |
| 5027636 | Feeder mechanism for applicator die A feeder mechanism for use with an applicator die in which a supply of terminals is fed to the die in the form of a plurality of interconnected terminals and the die functions to crimpingly apply a terminal to an end of each of a plurality of leads succes... | 07/02/1991 |
| 5026653 | Scavenger antibody mixture and its use for immunometric assay Provided is a test kit for conducting a membrane sandwich immunoassay of a multivalent antigen, optionally including reagents, the test kit includes a hollow container for reception of a fluid specimen, containing in series fluid absorbent body, a fluid p... | 06/25/1991 |
| 5024268 | Corrosion inhibiting coolant inhibitor container A filter device for an engine coolant includes a housing with an inlet for inflow of coolant and an outlet air outflow; a flow path extends between the inlet and outlet, a filter in the flow path filters the coolant; a dosage of corrosion inhibitor is dis... | 06/18/1991 |
| 5024866 | Composite ski pole and method of making same A strong, lightweight, flexible ski pole and a method for making it. The ski pole comprises a filament-reinforced, resin-matrix composite shaft with anti-splinter material to prevent filament splinters from protruding from the outer surface of the shaft. ... | 06/18/1991 |
| 5023764 | Stroboscopic lamp optical system The invention pertains to a stroboscopic timing light for use with internal combustion engines. The reflector assembly is designed to increase the proportion of light from a flash tube that becomes part of a focused light beam. The reflector assembly comp... | 06/11/1991 |
| 5022135 | Method of manufacturing a fluid conduit having exterior detail A method for fabricating metallic conduit and the like having exterior surface details such as beads, bulges and flares by inelastic flow of the metal of an extruded blank which does not exhibit the detail. The process comprises the steps of placing a bla... | 06/11/1991 |
| 5023655 | Apparatus for printing information on a substantially continuous roll of photographic paper The invention consists of improved apparatus for printing information on a substantially continuous roll of photographic paper in package and proof printers. A bracket suspends the marking device over a guide roller to be utilized as the platen for the ma... | 06/11/1991 |
| 5022408 | Combination exo/endocervical sampler A method of and device for obtaining simultaneous samples of exo and endocervical cells. The device includes an elongated handle portion having a free end and a row of flags disposed proximate the end opposite the free end. The flags are rectangular in cr... | 06/11/1991 |
