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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 4922720 | Solar liquid heating system A solar heating system for heating fluid enclosed in a waterproof, heatable flexible bag held in a support which can be a cavity in the earth, insulated from ambient temperatures by alternate layers of transparent flexible gas bags and liquid bags dispose... | 05/08/1990 |
| 4722670 | Aquarium pump and cleaning system The fish tank cleaning system of this invention comprises a water pump using power of water flowing at a sink to pull by venturi principle water through a hose from an aquarium to empty the aquarium or to cooperate with tools used at the aquarium for clea... | 02/02/1988 |
| 4702611 | Cup protecting mixer An ice cream product mixer of the type having a housing with an open forward side to receive fragile ice cream product serving cups, a mixing head rotating about a vertical axis and having blades each of which generally incline with respect to the axis. E... | 10/27/1987 |
| 4652196 | Lifter-carrier for cylindrical objects A lifter-carrier for lifting and carrying cylindrical objects such as hay bales on two booms adapted to slide under the curved sides of at least one cylindrical object. The booms are raisable to a position above the ground to carry the objects on wheels u... | 03/24/1987 |
| 4615061 | Pocketed and interconnected upper and lower sheets A bed sheet combination comprising under and upper sheets attached together by an elongated interlocking means assembly extending along foot portions of the sheets, the sides of the sheets being free of connecting means for speed of interconnecting of the... | 10/07/1986 |
| 4614102 | Seam lock spreader mounted on lock-seam machine base A seam lock spreader formed by providing a spreader wheel carrier adjustably attachable to the spindle of a conventional combination rotary machine and attaching also to the machine a pair of rollers especially shaped for driving sheet metal while providi... | 09/30/1986 |
| 4607727 | Grease zerk ram A grease ram having an elongated body having a hole extending therethrough, a force-receiving device at a rear end of the body which can be a hammer below receiving member, a plunger attached to and extending forwardly from the force-receiving device and ... | 08/26/1986 |
| 4571980 | Duct-shaping machine and method A duct-shaping machine having a pair of major-axis duct-shaping modules for elongating the cross section of a cylindrical duct as they are forced apart, a minor-axis compaction assembly having first and second compactors pressing inwardly towards the cent... | 02/25/1986 |
| 4555911 | Vehicle air conditioner ground wheel driven An air conditioner system for bicycles and other vehicles, the system using a wheel of the vehicle as a source of power, air flow through an ice chamber being useable in the system as an optional further coolant.... | 12/03/1985 |
| 4488722 | Safety tennis racquet A tennis racquet having at least mostly non-interwoven strings, a plurality of ball grips or string-protectors, each ball grip having an opening therethrough receiving a respective main string, retaining units holding each of the grips in a position along... | 12/18/1984 |
| 4484635 | Garden row making tool A garden row making tool comprising an elongated handle, a shovel on one side of said handle, a guide on the opposite side of said handle, the guide being adapted to follow a previously made furrow at a time when the shovel is making a new furrow parallel... | 11/27/1984 |
| 4463966 | Trailer towing and steering system A trailer steering hitch system for towing and trailer vehicles in which a tongue extends between the vehicles and in which a cable system extends along the tongue from a stationary elliptical pulley disposed beneath the towing vehicle to a rotating ellip... | 08/07/1984 |
| 4449975 | Intravenous anchor and wound shield An intravenous catheter and anchoring set comprising a catheter assembly having an I.V. catheter having one end inserted into the limb of a patient and a flexible tube attached to the other end of the catheter, a flexible anchor base, the base having notc... | 05/22/1984 |
| 4441403 | Aeration fan mounting system An aeration fan mounting system having a wall adapter and a fan housing with aligned interior surfaces and held in end-to-end alignment with each other by support bracket assemblies having insertion rings extending outwardly from both the wall adapter and... | 04/10/1984 |
| 4415162 | Dart target system A dart target system comprising a first target movably mounted on a frame for rotation about a first axis, whereby when a greater number of darts are stuck in the target on one side of the axis than the other, then that one side will be below the other si... | 11/15/1983 |
| 4408993 | Card holding teaching device A card-holding teaching device especially useful for blind children comprising a stiff body having at least one elongated piece of flexible material extending thereacross, the material having on one side tiny, soft, flexible projections which face the sti... | 10/11/1983 |
| 4398767 | Patio swing A patio swing comprising a seat suspended between right and left upright side supports, the right and left side supports being stably supported on feet members and being rigidly interconnected below the seat by a bridging assembly, the side supports incli... | 08/16/1983 |
| 4392599 | Drawer building system having fastening guns A building machine, useful for building drawers and other products, having first and second carriages, sub-carriages moveably mounted on the carriages, a work-piece space between the carriages during building, fastening guns, first and second sets of spac... | 07/12/1983 |
| 4387473 | Patient handler A patient handler having three panels hingably attached to each other which can be formed into either a sitting or a prone position, and having support assemblies for use in maintaining the patient handler in a given position, the patient handler being co... | 06/14/1983 |
| 4336865 | Cartridge case lubricator A cartridge case lubricator having a table supportable frame, an oil absorbent member supported in a recess in the frame, whereby the cartridge case can be passed downwardly through an opening in the absorbent member for lubricating the cartridge case, th... | 06/29/1982 |
| 4336894 | Ticket dispenser A ticket dispenser having a hollow body receiving a stack of tickets in its upper portion, a ticket pushing head in the body and pressed upward by a spring, the body guiding movement of the head along a vertical axis, a ticket exit slot at the top of the ... | 06/29/1982 |
| 4329804 | Lure with interlocking attachment A fishing lure comprising at least one fish hook having two retainers on its shank, a piece of flexible material wrapped around the shank between the retainers, the material having first protrusions on one side and second protrusions on the other side, th... | 05/18/1982 |
| 4307788 | Stand-up snow vehicle A motorized "stand-up" snow vehicle comprising a frame having a driving means thereon, a forward steering ski controlled by a steering unit which extends to a height above the frame sufficient to be easily grasped by a standing operator. The steering unit... | 12/29/1981 |
| 4299420 | License door holder assembly A license door holder assembly comprising an automobile having a gasoline spout receiving opening in it's rearward side, covered by a license door hinged thereto and adapted to fold downwardly and rearwardly at it's upper end, a door holder having a lock ... | 11/10/1981 |
| 4291908 | Safety gate latch system A safety gate latch system having a gate tongue, first and second rings on opposite sides of the gate tongue and held in a frame in a manner such that when the rings are down, the gate tongue cannot move past either ring, a post-tongue, a second ring fram... | 09/29/1981 |
| 4288940 | Rodent trap guard A rodent trap guard having a hollow housing receiving a trap, the housing having opposite open ends for rodent access and for trap insertion. The upper side of the housing having a trap viewing opening, the guard being of a strength for substantial protec... | 09/15/1981 |
| 4287893 | Weight reducing belt A weight reducing belt comprising an upwardly extending tightening section, preferably composed of elastic material, the side edges of which are connected to a connecting section, having substantially moisture impervious means covering the majority of its... | 09/08/1981 |
| 4283876 | Fishing plug with internal attracters A fishing plug having internal flexible attracters, the plug having a hook carrying body with open space therein receiving elongated flexible attracters in an open space and adapted to flex as the plug is moved, the attracters being visible through transp... | 08/18/1981 |
| 4280296 | Tandem fishhook A tandem fishhook comprising a forward hook and a rearward hook, the hooks each having two opposite sides connected by a curved portion, one of the sides having a barbed end, the other of the sides of each of the hooks defining an elongated shank extendin... | 07/28/1981 |
| 4277069 | Arrow for blood tracking An arrow for blood tracking comprising an elongated tubular shank having a head at one end and a nock at its other end, the arrow having a plurality of holes extending therethrough from the exterior of the arrow, the inner ends of the holes being in commu... | 07/07/1981 |
| 4274312 | Toggle wrench A parallel jaw action toggle wrench comprising a first jaw rigidly fixed to a first handle by means of a track section, a second jaw opposite the first jaw and slidable on the track section, and pivotally connected to a second handle, a toggle link connec... | 06/23/1981 |
| 4270572 | Hinging downspout assembly A hinging down-spout assembly having a first elongated section to which a second elongated section is attached by a hinge whereby the second section can swing from a position approximately at a right angle to the first section into a position parallel to ... | 06/02/1981 |
| 4269429 | Tow bar for aircraft A tow bar for aircraft having a telescoping collapsible tongue connected to a yoke having right and left arms rearwardly extending to right and left aircraft engaging units for engaging opposite sides of an aircraft steerable nose-wheel assembly in which ... | 05/26/1981 |
| 4268487 | Method of minimizing manganese dioxide sludge formation The method for minimizing manganese dioxide sludge formation comprising: to a water solution of potassium permanganate adding the article of commerce called "silicate of soda" in sufficient quantity for causing a visible prevention of manganese dioxide sl... | 05/19/1981 |
| 4265766 | Chicken marinade draining system A marinade draining system comprising an inner receptacle having draining slots in its bottom side inserted into an outer receptacle, side supports capable of maintaining the inner receptacle higher in the outer receptacle for draining and yet releasable ... | 05/05/1981 |
| 4262587 | Strapper feed conveyor A conveyor in combination with a strapper for strapping objects on the conveyor automatically as the conveyor is automatically stopped in many pre-selected places.... | 04/21/1981 |
| 4250531 | Switch-arc preventing circuit A switch-arc preventing continuous current circuit for protecting pulsing contact telephone exchange switches, the circuit having a first transistor in circuit with and controlled by a control transistor, the power electrodes of the first transistor being... | 02/10/1981 |
| 4248421 | Chest exerciser A chest exerciser comprising a compressible spring member which is normally expanded in shape, handles which are of a shape easily and comfortably grasped and attached to ends of the spring member, the spring member resisting human arm pressure, urging co... | 02/03/1981 |
| 4245806 | Multi-level multi-pipe hanger A multi-pipe hanger comprising a support assembly extending generally horizontally, first and second downwardly depending sections attached to respective ends of said support assembly, a first pipe receiving module which is concave on its upper side, conn... | 01/20/1981 |
| 4244157 | Coin counter and wrapper filler A coin counter and wrapper filler comprising a body having a hollow shank receiving coins, the lower end of the shank being tapered inwardly for reception in the upper end of a cylindrical paper coin wrapper, said body having a funnel attached at its uppe... | 01/13/1981 |
