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| Number | Title | Issue Date |
| 6073121 | Check fraud prevention system A method which improves check fraud prevention systems both in printing and verifying checks at their entry points. The method operates by printing on each issued check, a line of encrypted machine-only readable symbols such as a bar-code that contains al... | 06/06/2000 |
| 5992187 | Lockable shaft retainer A shaft retainer device that comprises three major components: a barrel shaped housing, a leverable gripping assembly which is located inside the housing along its central axis, and a key lock in one end of the housing. When the device is locked, the grip... | 11/30/1999 |
| 5894926 | Non-spill liquid toothpaste dispenser with simplified liquid cartridge A modification of an earlier invention by this inventor for a non-spiilable liquid toothpaste dispenser, to simplify its construction and make replacement liquid toothpaste cartridges more available. The dispenser stands upright for normal use, but can be... | 04/20/1999 |
| 5686854 | Isolated driver circuit for high frequency solid-state switches A driver circuit for high frequency transistor type switches, comprising two sections; a positive (+) drive and a negative (-) drive, both sections being supplied with a high frequency signal by a square wave oscillator source. The sections are connected ... | 11/11/1997 |
| 5659243 | High isolation, power-on control circuit for aircraft external power connection A power-on control circuit which functions to inhibit and prevent turn-on of an external power supply to an aircraft, unless a continuity signal is received from the aircraft indicating proper mating of the external power plug in the aircraft socket, thus... | 08/19/1997 |
| 5561595 | Power inverter with input line conditioning A three-phase ac power inverter incorporating circuits which operate to correct input power factor to near unity when connected to an ac input rectifier, while also reducing input harmonic distortion. The inverter includes a dc capacitor connected between... | 10/01/1996 |
| 5505681 | Portable athletic exerciser pulling device A device for athletic exercise by pulling at a resisting force. The device consists of a small cylindrical enclosure containing a number of constant force, circular wound spring assemblies, having a pulley molded to the enclosure, and having a force selec... | 04/09/1996 |
| 5501340 | Non-spill liquid toothpaste dispenser A non-spillable liquid toothpaste dispenser which stands upright for normal use, but can be used in any orientation. The dispenser is made of rigid plastic and comprises a case, a cap and a cartridge containing liquid toothpaste inside the case. Inside th... | 03/26/1996 |
| 5497110 | Frequency monitor and error detector circuit A frequency monitor and error detector circuit that processes an input ac signal to be monitored, comparing the input ac signal with an internally generated reference center frequency, and outputting a "Go/No-Go" signal indicating whether the monitored ac... | 03/05/1996 |
| 5496007 | Device for holding out-sized documents A document holder that is either floor mounted or table mounted, capable of holding and displaying out-sized documents. The document holder is composed of a vertical stand, a support arm and assembly which is mounted on the stand so that it can rotate and... | 03/05/1996 |
| 5489107 | Suitcase wheel assembly and retainer A device for transporting a suitcase is provided including a removeable wheel assembly and two supporting brackets which are permanently attached integral with the suitcase. The wheel assembly includes a handle which is welded to the assembly axle and is ... | 02/06/1996 |
| 5466022 | Safety cable lock for knob-operated door A safety cable locking device for a knob-operated door mounted in a door frame including a framing stud. The device comprises an anchor member, a wire plastic covered cable, a lag bolt and a bushing. The anchor member contains the bushing and is fastened ... | 11/14/1995 |
| 5466919 | Credit/charge card system enabling purchasers to contribute to selected charities A method which enables a credit cardholder to make a donation to a cardholder-selected charity any time he makes a purchase using the credit card. The method comprises a credit/charge card which identifies on its magnetic strip, charities to receive a don... | 11/14/1995 |
| 5441471 | Universal sport handle A sport exercise handle device is disclosed which adapts to commonly available components such as large soft-drink bottles to form a dumbbell, and a hand weight. Attachments to the handle produce a hand-rod holder for a bar-bell, a jump-rope using cord, a... | 08/15/1995 |
| 5398530 | Electrical cord locking device A device for preventing theft of any appliance having a permanently attached power or data cord, such as portable power drills, power saws, personal computers, monitors, printers and the like. The device comprises a flat clamping body member made of two m... | 03/21/1995 |
| 5394965 | Attachable pull handle for suitcases The invention is an attachable pull handle for suitcases which are mounted on rollers. A pull handle is encased in a rectangular plastic housing with its hand grip portion protruding out. The housing is intended to be screwed to the top side of a suitcase... | 03/07/1995 |
| 5362130 | Collapsible compact chair with back support for back-packing outdoors use A lightweight, collapsible compact chair with back support for outdoor backpacking use is described. The chair is an improvement in stability and weight to a prior art compact chair disclosed in U.S. Pat. No. 4,673,211. The improved chair version comprise... | 11/08/1994 |
| 5351507 | Wire cable locking device A device for securing equipments such as personal computers, monitors, printers and the like by using a cable which is secured to a relatively immovable fixture. The device comprises a wire cable with a plastic sheath and having a bulbous protrusion on on... | 10/04/1994 |
| 5216835 | Floral display and transportation rack A floral rack, particularly designed to hold floral stand flower arrangements which relate to a prior invention. The rack has a multi-level configuration and may be hung on a wall peg through a hole at one end or placed horizontally on a shelf and a suita... | 06/08/1993 |
| 5195270 | Floral stand A floral stand which is designed to display flower or branch arrangements in any desired orientation, including horizontally or upside down. The stand is a hollow shell made of a light weight plastic material, and having inside it porous material pads des... | 03/23/1993 |
| 5131341 | Solar powered electric ship system A system for producing and distributing electric power on a sailing ship, using arrays of photovoltaic cells covering the ships sails and rigging to generate electric power during daylight for the purpose of driving a ships screw. The solar array electric... | 07/21/1992 |
| 5052199 | Clamp locking device for PC's and the like A clamp device for securing the housing of PC's and similar equipment to a desk or table so that it can not be moved or stolen. The device is shaped to fit on the PC housing. Clamp pieces at the rear are made to grip the PC at its back by insertion of a w... | 10/01/1991 |
| 5047910 | Ideal sinusoidal voltage waveform synthesis control system A control system for poly-phase power inverters that uses feedback sensed voltages and currents to control the switching of solid state power switches in the inverter bridges, producing a nearly ideal sinewave voltage output regardless of load induced or ... | 09/10/1991 |
| 5047654 | Solar powered electricity mine system A system for the collection and conversion of solar radiated power into electrical energy. The system improves present solar power conversion systems by locating key elements deep underground, thereby greatly decreasing thermal losses and increasing syste... | 09/10/1991 |
| 5027627 | Locking device for bolts and stud-nuts A locking device for preventing access to a bolt or stud-nut which secures an equipment to a base. The device comprises three parts: a rectangular tube body, a slide member and a lock body. In use, the bolt is put through a hole in the tube body and the e... | 07/02/1991 |
| 5023765 | Pivotable lamp bracket for linear lighting fixture A lamp bracket for use in a linear lighting fixture. The lamp bracket is constructed so that when the bracket is attached to the fixture, the lamp socket portion can be pivoted downwards or outwards away from the fixture, permitting easy removal and repla... | 06/11/1991 |
| 5010748 | Stud or bolt locking device A locking device for preventing access to a bolt or stud-nut which secures an equipment to a base. The device comprises three parts: a block, a cover member and a lock body. In use, the bolt is put through a hole in the block and the equipment and is tigh... | 04/30/1991 |
| 5001854 | Gun safety locking devices A safety device for locking a rifle, pistol or revolver so that it can not be accidentally discharged. The device operates by occupying the barrel of the gun and projecting into the breech. It is locked in place by a digital padlock which is used because ... | 03/26/1991 |
| 4986097 | Tank filler tube lock A locking device for tank filler tubes is described, comprising a sleeve member for insertion in the filler tube to provide smooth walls, and an annular shaped locking collar that slides inside the sleeve and fastens through the sleeve to the inside wall ... | 01/22/1991 |
| 4924683 | Locking device for computer disk drives and the like A device for discouraging unauthorized use of a computer disk drive, cassette tape deck, CD player or similar equipment. The device includes a block, a flat, projecting member which is sized to fit inside the slot opening of the disk drive or tape deck, a... | 05/15/1990 |
| 4924342 | Low voltage transient current limiting circuit A polyphase AC current limiting circuit, which incorporates improvements in control methods and circuitry that operate to avoid high rates of current change which occur upon initiation of a branch load fault and when the branch load fault is suddenly clea... | 05/08/1990 |
| 4907111 | Locking device for floppy disk drives A device for locking a floppy disk drive so that the drive can not be used to read the files stored on the diskettes. The preferred embodiment of the device is made of two assemblies, one of which includes a blank diskette which is inserted in the open em... | 03/06/1990 |
| 4862716 | Stud not locking device for spare tires A device for locking a spare tire wheel which is mounted vertically on the back of a vehicle. The spare is mounted on studs that project from the back of the vehicle and is fastened in place with stud nuts. The device comprises three major metal parts: On... | 09/05/1989 |
| 4861030 | Two-handed racquet A racquet for use in tennis, racquetball, squash and badminton, having an oval or round head, two symmetrical shafts forming the racquet handle and two grips that are offset from the centerline of the handle. The grips may be angled or paralleled with the... | 08/29/1989 |
| 4856304 | Security device for cassette tape decks or the like A security device for preventing the unauthorized use of a cassette tape deck installed in automobiles, or for locking CD players or computer disk drives. The invention is simple in conception and is made of only two asesmblies. One assembly is a transver... | 08/15/1989 |
| 4819900 | Adjustable, heavy duty garage shelf assembly A heavy duty garage shelf assembly having shelf brackets that may be easily moved up or down and adjusted in place. The assembly is comprised of two steel vertical support tubes that are each bolted to a wall by a clamp at the top and a shoe-clamp at the ... | 04/11/1989 |
| 4784426 | Infant protector shade for automobile use A shade for protecting an infant from incident sunlight while transporting the infant in an automobile. The shade is made of an opaque, light weight, washable material, to which are attached two drawstrings. The drawstrings hold the shade in position by m... | 11/15/1988 |
| 4779434 | Tailgate locking device A device for securing the tailgate of a pickup truck, so that it can not be removed by unauthorized persons. The device is made of three steel assemblies, one of which is fitted over a tailgate extension, using the extension as an anchor for holding the d... | 10/25/1988 |
