Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 4265046 | Rod holder device A rod holder device useful in combination with a plural section fishing rod for holding at least one of the rod sections in substantially parallel relation to the main body of the fishing rod. The device is primarily useful for storing and transporting a ... | 05/05/1981 |
| 4264451 | Water purification method Hydrogen sulfide is effectively removed from potable water by the combined action of first chlorinating the water and then passing the chlorinated water through a bed of activated carbon. Chlorine is added in large doses to potable water containing dissol... | 04/28/1981 |
| 4260901 | Wave operated electrical generation system A system for converting the mechanical energy in the wave motion of a body of water into electrical energy. A frame is fixed with respect to the wave motion of the water. A flotation element is buoyantly supported by the water and constrained to follow on... | 04/07/1981 |
| 4260468 | Gas induction swimming pool chlorinator An apparatus for chlorinating water of a swimming pool. The device includes a main unit that is inserted into a cannister containing water; the main unit including a perforated barrel with a membrane therearound. The barrel containing salt and a gas colle... | 04/07/1981 |
| 4258763 | Cutting device having a flexible cutting element A plurality of cutting teeth are disposed at intervals in a complete circle around the periphery of a flexible cutting element. A frame is coupled to the cutting element to receive and guide the cutting element. Means is coupled to the cutting element and... | 03/31/1981 |
| 4256295 | Adjustable clamp An adjustable clamp for holding a workpiece wherein the clamp is characterized by a pair of fixed, opposing jaws and a first clamping member movably disposed on one of said jaws. The adjustable clamp further comprises a second clamping member movably atta... | 03/17/1981 |
| 4256241 | Pesticide duster A fluid-solid mixing and dispensing apparatus primarily intended for use in the application of pesticide dust. The apparatus comprises a blower and a removable, disposable pesticide dust cartridge attachable to the blower in fluid-communicating relation t... | 03/17/1981 |
| 4256181 | Automatic stove top fire extinguisher A fire extinguishing system is automatically actuated in response to flames from a fire on the upper surface of a stove having a vent hood. A pressurized fire extinguisher includes a lever actuated valve spring biased to the open position and contains a s... | 03/17/1981 |
| 4255936 | Heat pump water heater The heating system of the present invention includes a compressor for compressing and heating refrigerant. The pressurized, heated refrigerant is passed through a first heat exchanger which is coupled to a container of water. A pump circulates water from ... | 03/17/1981 |
| 4254716 | Method and apparatus for preparing organic waste fuels An integrated fuel preparation and incinerator system and method for utilizing organic solid and semi-solid waste materials as a primary boiler fuel is provided. The organic waste fuel materials are refined to allow for improved combustion efficiency. Com... | 03/10/1981 |
| 4254157 | Processing of grapefruit segments containing membranes A method, and the product rendered by the method, for processing citrus fruit to tenderize the intermediate membrane between adjacent fruit sections includes heating canned citrus sections containing membranes to an elevated center can temperature in orde... | 03/03/1981 |
| 4250128 | Processes and apparatuses for preparing permanent magnet stators Annular magnets, primarily for motor stators, are centrifugally cast from particulate materials and synthetic plastic materials. Iron particles and ferrite particles stratified during the spin casting procedures so that the former provide an outer stratum... | 02/10/1981 |
| 4249327 | Fine grader A fine grader for fine grading the surface of the subgrade on which fresh concrete is to be poured to form a uniformly level surface for receiving freshly poured concrete is formed by coupling together a fine grader attachment with a vibratory screed. The... | 02/10/1981 |
| 4244841 | Method for recycling rubber and recycled rubber product A unique method for recycling rubber scrap to yield a final product of at least about one inch in thickness characterized by the absence of the use of alkalis, acids or organic solvents in the steps of the process. Finely ground dry rubber scrap is intima... | 01/13/1981 |
| 4243464 | Laminating method A laminating machine and the method incorporated therein includes a pair of opposing and substantially parallel cylindrical steel rollers defining a continuous pressure line between the outer cylindrical surfaces thereof. A sheet is fed between the roller... | 01/06/1981 |
| 4243050 | Method for inserting pacemaker electrodes and the like An apparatus and related method for implanting pacemaker electrodes and similar devices within a patient include an introducer with a tapered end adapted to extend into the patient's body, and a hollow, tubular sleeve having a first portion with an inner ... | 01/06/1981 |
| 4241107 | Roof coating process A unique method for applying a lightweight cementitious coating to either existing or new roof surfaces. The invention relates to the method of preparing the coating mixture and its manner of application.... | 12/23/1980 |
| 4239404 | Paper management system for a printing device A dispenser for a roll of paper, a deflectable paper guide and systems for indicating when a predetermined amount of paper is left on the roll and when the supply of paper is totally exhausted. The paper dispenser is mounted on a printer frame and include... | 12/16/1980 |
| 4238931 | Waste heat recovery system controller In a system having a waste heat recovery subsystem utilizing a heat exchanger, such as a refrigeration system having a heat exchanger for extracting and recovering heat energy from the superheated refrigerant by means of a transfer fluid, method and appar... | 12/16/1980 |
| 4237708 | Prisoner leg restrainer A prisoner leg restrainer is attachable to one leg of a prisoner wearing a belt. The leg restrainer includes first and second brace elements which are pivotably coupled together by a hinge. Straps are provided to couple the first and second brace elements... | 12/09/1980 |
| 4236461 | Removable and foldable vehicle table A foldable and removable table for use with vehicles of the type having a hinged panel permitting entry into the vehicle includes a corner table member having a flat supporting surface and a pair of hooks, each hook removably engaging the vehicle panel in... | 12/02/1980 |
| 4232819 | Control system for environmental apparatus A switching system for controlling operation of conventional environmental apparatus of the type having an electrical connection adapted to be coupled with a supply of electrical current includes a switching circuit in a first housing for making and break... | 11/11/1980 |
| 4229982 | Cam drive system having parallel input and output shafts A cam drive system having parallel input and output shafts and means for rotating the input shaft includes a plurality of cams coupled at intervals around the periphery of the input shaft. Each cam utilizes a camming surface which incorporates a radially ... | 10/28/1980 |
| 4227515 | Dual phase solar water heater A solar energy conversion apparatus having two phases of operation which, in one phase, absorbs thermal energy from sunlight incident on the device, and in a second phase, absorbs energy from air in an attic-type space heated by solar radiation. The two p... | 10/14/1980 |
| 4227220 | Tape recording system A tape reproducing and recording system for recording selected pieces from a bank of recorded material having a system for selecting desired pieces of recorded material from a bank of recorded material and a memory for storing the selections made. A scann... | 10/07/1980 |
| 4226815 | Cooling apparatus A liquid cooling apparatus having a multi-level terraced structure capped by a central cooling tower. The central cooling tower has one or more non-clogging liquid spray nozzles mounted therein for spraying the liquid in the tower while compressed air is ... | 10/07/1980 |
| 4225057 | System for monitoring unit and total quantities of a dispenser fluid A flow meter for use in monitoring unit and total quantities of a dispensed fluid, such as draft beer, includes a motion detection switch inside a housing and is coupled to a valve which controls the fluid flow. The switch provides an electrical indicatio... | 09/30/1980 |
| 4223702 | Drain line for recreational vehicles A telescoping drain line for connecting recreational vehicles to a sewage system has telescoping rigid wall drain pipes having a plurality of pipe sections telescoping one within the other. A flexible hose extends through the telescoping pipes and out eac... | 09/23/1980 |
| 4222858 | Particle separator A particle separator physically separates a mixture of small and large particles and metal particles which are suspended in a stream of air into discrete groups of small particles, large particles and metal particles. The particle separator includes a cha... | 09/16/1980 |
| 4222217 | Aquatic weed harvesting apparatus Apparatus for harvesting aquatic plants from a body of water includes transporting means, such as a trailer or a floating craft, adapted to move into the body of water. A centrifugal pump mounted on one end of the transported is adapted to be at least par... | 09/16/1980 |
| 4221385 | Shuffleboard game apparatus Game apparatus physically adapted for use on a flat playing surface, such as a shuffleboard court includes a support frame having a bracket for engaging the parallel edges of the shuffleboard court and a horizontal support bar suspended above the court be... | 09/09/1980 |
| 4220370 | Telescoping camper A telescoping camper body apparatus for pickup trucks, and the like, has a lower body portion for attachment to the truck body and a telescoping body portion telescoping over the lower body portion and having a roof thereon. Trucks are formed in the exter... | 09/02/1980 |
| 4220198 | Bracket apparatus A unitary bracket for hanging finned tubes and troughs for a heating and cooling system. The bracket is provided with a fastener for attaching to a wall and has a finned tube support for supporting finned tubing and a drain trough support for supporting a... | 09/02/1980 |
| 4219967 | Flower pot watering apparatus An apparatus for supporting a flower pot and watering the contents thereof. The watering system uses a separate base having a liquid reservoir therein for holding water or water and plant nutrients. A separate flower pot container has a bottom portion sha... | 09/02/1980 |
| 4219072 | Phase change material heat exchanger A phase change material heat exchanger wherein the latent heat of a substance as its physical state changes from solid to liquid, and vice versa, is utilized as a heat storage medium. Structure is also disclosed whereby a heat transfer fluid is intimately... | 08/26/1980 |
| 4217538 | Regulated permanent magnet D.C. power supply The power supply of the present invention comprises a power takeoff shaft driven by mechanical electrical or other means and a magnetic field of the permanent magnet together with a first winding for generating a first output voltage proportional to the s... | 08/12/1980 |
| 4216939 | Recreational vehicle leveling and support system A leveling and support system for recreational vehicles uses fluid cylinders located at predetermined positions on the recreational vehicle, driven by a master cylinder through a valving control system. The piston of the master cylinder is actuated by a m... | 08/12/1980 |
| 4216713 | Can crushing mechanism An apparatus for crushing cans uses a pair of guide rods having an anvil attached at each end, and a pair of sliding rams sliding on the guide rods. Can support wire members are positioned between each ram and anvil to support a can during crushing. A ram... | 08/12/1980 |
| 4216605 | Method of making a fishing lure The method of making a fishing lure includes the steps of applying a barrier coat to the cavity of a pair of mold halves, slipping an elongated hollow tube or an elongated hollow tube and hollow metal weight onto a mandrel, placing the mandrel across the ... | 08/12/1980 |
| 4215462 | Method of making a translucent optical diffuser for a lamp A flower lamp includes first, second and third diffuser sections each being configured in the shape of a flower petal. Each diffuser section includes a wire frame, a section of translucent material and means for securing the material to the frame. The fir... | 08/05/1980 |
