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| Number | Title | Issue Date |
| 4462542 | Heating system An auxiliary heating system for providing energy to a furnace and a domestic hot water heater. A heat transfer fluid is contained within a storage tank and is automatically routed between a heat exchanger located in an auxiliary heater, such as a fireplac... | 07/31/1984 |
| 4448041 | Vacuum insulated walls for refrigerated containers and trailers Refrigerated containers and trailers comprised of structural members in the form of vacuum insulated sidewalls, ceilings and floors having a thickness of approximately one inch. Each structural member is divided into a plurality of individual airtight sec... | 05/15/1984 |
| 4444619 | Method of producing printed circuits A method of producing a printed circuit comprising printing a plating resist onto the clean surface of a layer of electrically conductive material on at least one side of a substrate so as to leave exposed only the required track areas of the surface; ele... | 04/24/1984 |
| 4443005 | Foot support device A device for mechanically supporting a patient's foot in such a manner that surgery can be performed on the tibia or ankle without the need for medical personnel to hold the leg. In addition, a fracture can be reduced, held, X-rayed and casted by the surg... | 04/17/1984 |
| 4442372 | Piezo electric apparatus for generating electricity A variable pressure piezo electric generator comprised of a furnace chamber, a refrigerant chamber surrounding the furnace chamber in heat exchange relation thereto and a condensing chamber in communication with the refrigerant chamber. The refrigerant ch... | 04/10/1984 |
| 4437189 | Sound system for a musical instrument Apparatus for connecting an electrical musical instrument to a public address system that includes a speaker having a cone-shaped diaphram, a mounting bar positioned across the mouth of the speaker and a microphone supported in the bar that passes into th... | 03/13/1984 |
| 4434784 | Viewing apparatus for a chimney Apparatus for viewing the interior of a working chimney so that smoke patterns and the condition of the chimney walls can be continually monitored without the need of discontinuing the operation of a connected stove. The viewing apparatus is rendered airt... | 03/06/1984 |
| 4433563 | Lock decoder Apparatus for determining the opening combination of a safe lock including a dial turning device that is controlled by a programmable processor acting through a stepping motor to set selected combinations into the lock and to test the lock after each comb... | 02/28/1984 |
| 4429886 | Flexible pipe gasket A flexible gasket for sealing a concrete pipe within a hole formed in a concrete wall. The gasket contains a body ring having sufficient mass to support the gasket within the hole without sagging and a resiliency to allow the gasket to be collapsed inward... | 02/07/1984 |
| 4428522 | Step driver Apparatus for placing steps in a concrete pipe or riser immediately after the pipe has been cast but before it is cured. A movable carriage is mounted upon a support column that is arranged to move a step driving mechanism vertically along the inner wall ... | 01/31/1984 |
| 4428369 | Corrective and protective knee brace A corrective and protective knee brace wherein the upper and lower portions of the brace are connected together in such a manner that the flexing movement of the brace closely simulates the rolling and sliding movement of the human knee. The simulated kne... | 01/31/1984 |
| 4426095 | Flexible seal This invention relates to a composite flexible seal for providing a fluid tight joint between a pipe section and the inside surface of a receiving opening. The seal includes a slightly elongated tubular body formed of an elastomeric material and a spring-... | 01/17/1984 |
| 4419883 | Leak detector A system for detecting small leaks at low pressures in hermetically sealed units that includes a first flow circuit for connecting a test unit to a source of pressurized gas (air) to place the unit at a desired test pressure. The gas (air) is then reroute... | 12/13/1983 |
| 4418497 | Combination greeting card, ornament and seed germination box A combination greeting card, ornament and seed germination receptacle which comprises an initially flat, scored blank that is foldable into a three-dimensional hollow ornament. A greeting message is printed on the blank and the latter in its flat form is ... | 12/06/1983 |
| 4416254 | Flue structure for domestic heating equipment Improved flue structure for domestic heating equipment such as a gas fired hot water heater. In conventional gas fired water heaters, the heater is directly connected to a chimney or the like by a single flue pipe and this results in a wasteful loss of he... | 11/22/1983 |
| 4413564 | Slug for a shotgun shell A shotgun slug having a frusto-conical body that increases a diameter from front to rear and which further includes a plurality of vanes projecting radially from the body which extend obliquely along the length thereof. The top lands of the vanes describe... | 11/08/1983 |
| 4413417 | Adjustable angle plate An adjustable toolmaker's square that includes a one piece body having a pair of legs containing flat accurately machined reference surfaces that meet at an angle that is slightly less than 90° to form a corner. One of the legs forms the base of the devi... | 11/08/1983 |
| 4410901 | Electrochemical marking A control device for programing information recorded upon a receiving part by an electrochemical marking head. In the main embodiment of the invention, the number recorded by the marking head is automatically sequenced after each marking cycle is complete... | 10/18/1983 |
| 4408215 | Electrochemical marking apparatus Apparatus for selectively marking the surface of a grounded conductive part using a known electrochemical marking process. The apparatus includes a writing head having a plurality of aligned digital modules mounted therein. Each module is made up of a ser... | 10/04/1983 |
| 4404868 | Wagon transmission A drive for an agricultural machine; such as a forage wagon or heavy duty spreader apron; the drive including a drive shaft of apron chains being powered by transmissions that are fully enclosed so as to not get clogged with mud or ice and the like, the t... | 09/20/1983 |
| 4403503 | Apparatus and method for the reduction of interferences in chromatography Apparatus and method for improving the definition of a signal of interest in the presence of certain types of interfering signals in chromatography. The apparatus in one embodiment of the invention includes a chromatographic column through which a sample ... | 09/13/1983 |
| 4389829 | Metal roof system A roof system of the type wherein a rafter and a purlin are connected by a sheet metal truss. The truss contains a pair of channel-shaped mounting flanges that are hinged to the member at each end thereof. One flange is adapted to pass over and be seated ... | 06/28/1983 |
| 4388789 | Closure apparatus for building panels Apparatus for providing a secure weathertight joint between a pair of coplanar building panels that includes a web passing upwardly through the seam of the joint. A pair of opposed downwardly turned runners depend obliquely from either side of the raised ... | 06/21/1983 |
| 4388008 | Automatic paper feeder An automatic paper feeder for use with a character printer, the feeder having a dual cartridge capability and, alternatively, the capability of feeding envelopes to the printer. The feeder is constructed so that cut sheets or envelopes leaving the printer... | 06/14/1983 |
| 4383565 | Lens protection case A lens case for a camera lens which can be used to protect the lens when it is either mounted upon a camera or removed therefrom. The protective case includes an elongated housing that is closed at one end by a blind wall and opened at the other to permit... | 05/17/1983 |
| 4381894 | Deposition monitor and control system Method and apparatus for monitoring the deposition of a material or materials upon a substrate using atomic absorption techniques. Radiant energy is directed through a flow of evaporant during a deposition process. The radiation contains spectral emission... | 05/03/1983 |
| 4380998 | Soft tip speculum A removable speculum for use in conjunction with an otoscope. The speculum contains a soft, rubber-like tip bonded upon the distal end thereof for protecting the ear canal and forming a seal therewith. An internal seal is also provided that acts between t... | 04/26/1983 |
| 4364198 | Storm unit for existing window A storm unit for installation in an existing window system to provide for greater insulation and weather protection. The unit includes a pair of side rails for replacing the existing inside stops of the window. The rails have a pair of parallel, verticall... | 12/21/1982 |
| 4361055 | Torque converter A torque converter is disclosed which comprises a gimbal assembly having a gyroscope mounted for rotation within one of the rings thereof. The spin axle of the gyroscope and the entire gimbal assembly are adapted to rotate about the precessional axis of t... | 11/30/1982 |
| 4355674 | Apparatus for separating casings from tire rims Apparatus for removing the outer casing from the rim of a wheel so that each part of the wheel may be recovered separately for purposes of salvage or repair. The wheel is laid on its side upon a worktable having a circular opening formed therein with the ... | 10/26/1982 |
| 4354914 | Marking head for electrochemical process A marking head for use in the electrochemical process wherein a conductive metal part is imaged by firing electrodes against the part in the presence of an electrolyte. The marking face of the head contains an imaging board that includes seven segment dig... | 10/19/1982 |
| 4352438 | Protective shield for open container A protective device for temporarily shielding the upper surfaces of an open liquid container, such as a paint can or the like, to prevent the contained liquid from accumulating upon the upper surfaces thereof. The device involves an endless loop made of a... | 10/05/1982 |
| 4348036 | Safety binding for nordic skis A safety binding for cross country skis that is capable of releasing a ski boot when the binding is overstressed by forces acting in any direction. The binding includes a boot mounted toe piece capable of being mounted upon the skier's boot that has a pai... | 09/07/1982 |
| 4345710 | Temporary material receptacle A temporary material receptacle that is suitable for use in snowbound regions in which delivery boxes are oftentimes buried under deep drifts or torn away by snow plowing equipment. The receptacle is formed by folding a single blank of suitable material i... | 08/24/1982 |
| 4344378 | Portable cleat for marine use A portable cleat for securing the mooring lines of a boat to a plank dock or pier when permanent cleats or other line securing means are not available. It is contemplated that two or more of the portable cleats will be carried by a cruising boat and when ... | 08/17/1982 |
| 4344760 | Marine propulsion system A marine propulsion system for a cruising boat or the like which utilizes two engines, one of the engines having substantially more power than the other. The propulsion system provides for twin propellers and propeller shafts and either engine (but not bo... | 08/17/1982 |
| 4343245 | Support unit for shelving system A shelving system including support units that are easily secured to the shelves without the need of special tools or forming unsightly holes in the shelving. Each support unit contains a U-shaped bracket that is connected to the bottom surface of one she... | 08/10/1982 |
| 4337577 | Declination transposer A direct reading map plotter for converting grid values to magnetic values and vice versa without having to perform arithmetic calculations. The plotter includes a transparent base having a recess formed therein in which is rotatably supported a transpare... | 07/06/1982 |
| 4335961 | Refractive index measurement of optical thin-film Method and apparatus for determining the refractive index of an optical film over a wide spectral range is described that involves measuring the changing radiant reflectance (or transmittance) of the film at various wavelengths as it is being deposited up... | 06/22/1982 |
| 4334675 | Gymnasium apparatus Apparatus for securely supporting an exercise bar that includes a pair of opposed locking units having a base section and a vertical post in which the bar is adjustably suspended above the floor. Compression rods are connected between the top of the post ... | 06/15/1982 |
