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| Number | Title | Issue Date |
| 4280181 | Cash accountability control circuit for vending and like machines A control circuit for vending and other coin controlled devices including a first accumulator for accumulating the price of each vend, said accumulator having a first input where signals that represent each vend price are entered, a second input where sig... | 07/21/1981 |
| 4253279 | Precision honing device A precision honing device including a substantially tubular honing member having an outer work engaging surface, an axially tapered inner surface, a full length slit through the device along one side thereof, and a layer of a relatively hard wear resistan... | 03/03/1981 |
| 4249568 | Backflow preventer valve A backflow preventer valve including a housing structure having inlet and outlet ports therethrough for attaching to system conduits, a chamber formed in the housing, a pair of spaced valve seats associated with one of the ports including an air space for... | 02/10/1981 |
| 4249883 | Automatic damper device This invention relates to an automatic damper device for use in exhaust flues, such as flues of combustion devices such as furnaces and water heaters, devices such as air conditioners, and the like, to prevent undesirable loss of hot air or cold air out t... | 02/10/1981 |
| 4245489 | Knurling tool A knurling tool including an elongated body member having opposite ends and a bore extending therein from one end, the bore being spaced from and acutely angularly related to the axis of the body and extending in part through the side of the body, the bor... | 01/20/1981 |
| 4230929 | Control circuit for a welding device A control circuit for accurately controlling the duration of a welding operation. In a preferred embodiment the control circuit includes first and second connectors for connecting the control circuit to a power source, welding and control transformers, th... | 10/28/1980 |
| 4228626 | Prefabricated panel module construction A Prefabricated Panel Module Construction for use in constructing walls and enclosures comprising a substantially rectangular frame assembly with a substantially flat rectangular sheet of sheathing material attached thereto. The frame assembly includes fo... | 10/21/1980 |
| 4227310 | Heads for gaging devices and fixture for setting same A gaging head for the in process gaging of a surface such as a cylindrical surface while it is being honed, ground, or machined by a device which increases the diameter thereof, said head having a work engaging portion of a size and shape to accurately te... | 10/14/1980 |
| 4226400 | Guide means for honing and like machines Improved guide means for supporting a rotatable member or mandrel during reciprocating motion thereof including a machine feed portion having a pair of guide rails spaced apart on a fixed support structure, a plurality of longitudinally spaced support mem... | 10/07/1980 |
| 4225167 | Vehicle bumpers with collapsible parts This invention relates to vehicle bumpers and more particularly to vehicle bumpers with frangible or resiliently collapsible parts which break-away or distort on impact to minimize the loss of control which often occurs when metal and other more usual typ... | 09/30/1980 |
| 4210485 | Wallpaper applicator The invention relates to a wallpaper applicator by means of which wallpaper can be fed on to a wall and adhered thereto with the assistance of one or more rollers rotatably mounted on the applicator. The applicator can be adapted to single-handed operatio... | 07/01/1980 |
| 4197680 | Precision honing mandrel A precision honing mandrel including a tubular honing member having a helical, straight or other shaped groove therethrough, a substantially cylindrical outer surface, a tapered inner surface, and a layer of a relatively hard wear resistant abrasive subst... | 04/15/1980 |
| 4192073 | Process gaging apparatus An apparatus for gaging a workpiece surface during an enlarging operation thereon, said enlarging taking place by a working member which enters the work surface from one direction and by reciprocally moving the workpiece relative to the working member dur... | 03/11/1980 |
| 4176591 | Cooking pan for baking pizza pies and like food products An improved one piece cooking pan designed especially for use in baking pizza pies or like food products in a pre-heated oven, the pan having a substantially flat bottom portion with a plurality of perforations uniformly distributed over the entire extent... | 12/04/1979 |
| 4159139 | Device for holding flexible bags such as plastic trash bags and the like A device for holding and supporting the mouth or open end of a flexible bag such as a plastic trash bag or the like in an open condition, which includes relatively rigid elongated members, one of which is pivotally connected to the other at an intermediat... | 06/26/1979 |
| 4151904 | Coin detection device An apparatus for detecting objects such as coins and the like and for generating signal responses that depend on the metal content or other characteristics of the object or coin, which apparatus includes a detector circuit including an oscillator device h... | 05/01/1979 |
| 4139762 | Humidifier A humidifying device automatically controllable to discharge an abundant supply of steam into the outlet or plenum chamber of an associated air handling apparatus such as a forced air furnace in a home or other structure to provide and maintain a desired ... | 02/13/1979 |
| 4130014 | Tension monitor means An apparatus for measuring and monitoring the tension on a web or strand as it extends and/or moves over and around a roll including a support assembly for supporting at least one end of the roll, said support assembly including a bridge structure having ... | 12/19/1978 |
| 4127190 | Dispenser for dispensing pills or tablets in a predetermined order A dispenser for dispensing pills or tablets in a predetermined sequential order, including a pill container, a dispensing cap, and sequence indicating indicia associated therewith. The container is a cylinder, preferably transparent, having spaced annular... | 11/28/1978 |
| 4125259 | String clamping device and support structure therefor for racket and like stringing machines An improved string clamping device for racket and like stringing machines, which includes an elongated housing having spaced and opposed side walls and open opposite ends, the side walls of said housing defining opposite sides of a channel which extends t... | 11/14/1978 |
| 4124944 | Device for teaching and evaluating a person's skill as a welder An apparatus for simulating an arc welding operation, for training welders and for evaluating a welder's performance including a target representing a simulated weld to be made, mechanism for imparting predetermined motion to the target, a simulated weldi... | 11/14/1978 |
| 4114624 | Skin closure means Improvements in skin closure means including means for uniting and holding separable closure members and skin portions attached thereto accurately together and to prevent separation thereof by forces which might otherwise cause the united members to separ... | 09/19/1978 |
| 4105867 | Control circuit for pay telephones and the like A control circuit for a pay phone including a coin unit where money is deposited and validated, an entry circuit having a first input connected to the coin unit for entry of amounts deposited, a second input to the entry circuit for communicating thereto ... | 08/08/1978 |
| 4103606 | Cooking device A cooking device for quickly and uniformly cooking food products, especially meat products, and for warming rolls and other bread products. The device includes an elongated housing substantially enclosable on all sides, a wheel frame assembly supporting t... | 08/01/1978 |
| 4085344 | Cooling for magnetic particle devices A magnetic particle apparatus having spaced relatively movable members with magnetic particles positioned therebetween and electromagnetic field producing mechanism to generate a magnetic field between the relatively movable members through the magnetic p... | 04/18/1978 |
| 4062122 | Fixture for setting the stationary gaging contact on a dial bore gage A gaging fixture for presetting the radially extended position of a stationary work engaging contact on a dial bore gage or like instrument, wherein the stationary work engaging contact is mounted on a member threadedly engaged with the gage, which member... | 12/13/1977 |
| 4035959 | Cam operated automatic control for a honing machine An apparatus for automatically controlling the operations of a machine tool such as a honing machine or the like, which apparatus sets in motion apparatus which controls and maintains the operating cycle of the machine automatically and without requiring ... | 07/19/1977 |
| 4034839 | Simplified multi-price vend control circuit A vend and price selection control circuit including selection switches actuatable by a customer to produce any of a plurality of possible vends at different vend prices, all of which are controlled by the same control and logic circuitry and circuit elem... | 07/12/1977 |
| 4023372 | Means to seal-off portions of underground mines and the like An apparatus for sealably closing off or separating portions of a mine for safety or other reasons including an inflatable member having a size and shape which corresponds substantially to the cross-sectional size and shape of a mine passage, tunnel or th... | 05/17/1977 |
| 4008792 | Vend control circuits capable of vending different quantities at different prices A control circuit for vending and like machines which includes an electric circuit with circuit elements and connections which enable vending machines to vend different items costing different amounts and in different quantities with and without quantity ... | 02/22/1977 |
| 3999338 | Roof framework employing slotted gable construction A roofing framework adapted for mounting atop a selected pair of opposite side walls of a building structure said framework including a pair of spaced apart opposed base members, each of said base members having a plurality of upwardly extending column me... | 12/28/1976 |
| 3998246 | Means for keeping track in weaving operations An apparatus for use on looms and weaving devices, and especially hand operated weaving devices or looms, which apparatus enables the operator whether sighted or a person of limited or no vision, to weave even fairly complex patterns involving frequent se... | 12/21/1976 |
| 3993001 | Explosive expansion means for attaching tubes to tube sheets A plastic tube and tube end cap for installation in a metal tube or the like when the metal tube is positioned extending through a passage in a tube sheet, such that the plastic tube and end cap cooperate to accurately position an explosive charge which, ... | 11/23/1976 |
| 3988022 | Racket stringing machine An improved apparatus for stringing rackets such as tennis rackets and the like including improved means for locking the racket against movement in different fixed positions during stringing to prevent loss of string tension, improved string gripping and ... | 10/26/1976 |
| 3973768 | Detachable feed mechanism for printing devices and the like A feed apparatus for the input of a printing machine or the like having stationary and movable platform portions and upwardly extending adjustable guides, the forward end of the movable platform portion including a cavity portion which communicates with a... | 08/10/1976 |
| 3965613 | Magnetic toy A magnetically controlled toy including a toy vehicle with magnetic means located therein and means to manipulate and guide the vehicle including a control member or wand which includes magnetic means that cooperate with the magnet means in the vehicle to... | 06/29/1976 |
| 3967133 | Power supply means A power source particularly for use in remote locations which can be operated off of conventional sources of power such as off a battery source, said power source including means for distinguishing between different voltages and including means to indicat... | 06/29/1976 |
| 3963035 | Coin controlled circuits for vending and other coin controlled devices A control circuit for vending and other coin controlled devices which have arrangements to payback amounts deposited in excess of the vend price, the vending machine having a plurality of coin tubes for respectively containing coins of different denominat... | 06/15/1976 |
| 3962595 | Magnetic particle brake A magnetic particle device such as a magnetic particle brake in which the flux producing means are mounted in a stationary member, said device having improved means for dissipating heat, improved means for locating the heat sensitive members including the... | 06/08/1976 |
| 3956626 | Pulse quaternary communication means A pulse quaternary modulator especially to enable laser communication systems when working at high data rates to be able to operate on less laser power and on a modulation format that improves modulation efficiency. The subject modulation means can be use... | 05/11/1976 |
