Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 5571020 | Education device for assisting in the learning of keyboarding Educational devices using process-oriented educational methods are disclosed to prepare pre-school children, school children, and teenagers for keyboarding. The devices include sets of gloves and indicia applied to the fingers of the gloves to provide pic... | 11/05/1996 |
| 5537820 | Free piston end position limiter A piston end position limiter for a free piston machine of the type having a piston sealingly reciprocating in a cylinder and separating a work space bounded at one end of the piston from a second space bounded at the opposite end of the piston. The work ... | 07/23/1996 |
| 5533775 | Restraining system for foldable rear-seat back rests in motor vehicles A restraining system for a foldable rear-seat back rest in motor vehicles including a flexible belt extending from the rear of the seat back and removably attaching to the rear door of the vehicle. The belt is tensioned by an automatic roll-up mechanism w... | 07/09/1996 |
| 5516353 | Separation of metal droplets of aluminum and its alloys from molten salts by application of electrical potential The invention relates to the application of an electric potential to a mixture of molten metal droplets, molten salts, and optionally certain fluoride salt additives, whereby the molten metal migrates toward one of the electrodes. The migration encourages... | 05/14/1996 |
| 5502968 | Free piston stirling machine having a controllably switchable work transmitting linkage between displacer and piston Free piston Stirling coolers and engines are improved by a variable power transmitting linkage connecting the displacer to the piston and coupling more power from the displacer to the piston while piston displacement exceeds a selected limit than coupled ... | 04/02/1996 |
| 5496153 | Method and apparatus for measuring piston position in a free piston compressor A method of measuring the distance at closest approach between the piston of a free piston compressor and the cylinder head. The method derives measurements of both the alternating and average components of piston position from direct measurements of the ... | 03/05/1996 |
| 5490465 | Paperboard/corrugated board pallets and methods for manufacturing such pallets A paperboard pallet having generally U-shaped, parallel runners with notches along the distal edges of their legs for receiving stringers. The runner legs diverge from the central web and are formed by a plurality of nested paperboard laminations, each ha... | 02/13/1996 |
| 5486112 | Autonomous wearable computing device and method of artistic expression using same Educational devices using process-oriented educational methods are disclosed to prepare pre-school children, school children, and teenagers for keyboarding. The devices include sets of gloves and indicia applied to the fingers of the gloves to provide pic... | 01/23/1996 |
| 5478073 | Golf swing analysis and method of custom trimming golf club shafts A method of custom trimming golf club shafts comprising (i) measuring the frequency of oscillation, fc, of a representative shaft at a plurality of different tipping amounts and effective shaft lengths, (ii) calculating the moment, mc | 12/26/1995 |
| 5468083 | Instrument hand grip A writing instrument hand grip to facilitate gripping ease and comfort and to improve handwriting for people with a hand and finger dexterity disability. A pyramidal tetrahedron has a writing material detachably mounted to one or more of its apexes. Its f... | 11/21/1995 |
| 5461859 | Centering system with one way valve for free piston machine A piston centering system for a free piston machine. The invention uses a centering passageway which is in communication between a work space and a second space which spaces are formed in a housing and are separated by a piston which reciprocates in a cyl... | 10/31/1995 |
| 5455065 | Treatment for improving cellulosic insulation A method for manufacturing fire retardant cellulose fibers. The method comprises mixing limestone with shredded cellulosic fibers, mixing an acidic agent with the fibers, and depositing water on the mixture of fibers, limestone and acidic agent. A chemica... | 10/03/1995 |
| 5452929 | Keyless door lock A security apparatus for restricting the opening of a door in a frame consisting of lag bolts screwed into the frame near opposite edges of the door and a nylon belt fastened to each lag bolt. An aperture is formed near each end of the belt and the lag bo... | 09/26/1995 |
| 5441256 | Method of custom matching golf clubs A method for measuring the swing time of a golfer's swing and selecting a golf club having k divided by four times the club's natural frequency (fn) approximately equal to the golfer's swing time. The golfer's swing time is defined as the time ... | 08/15/1995 |
| 5278540 | Electromechanical earthquake alarm An earthquake sensor in which a weight falls from a support surface and activates a switch in the event of an earthquake. The support surface is preferably a bell with its opened end downward and the weight resting on a concave, recessed region at the clo... | 01/11/1994 |
| 5126654 | Non-invasive, high resolution detection of electrical currents and electrochemical impedances at spaced localities along a pipeline Electrical current distribution in the soil surrounding a buried pipeline is detected by applying an AC electrical potential between the pipe and a buried electrode spaced from the pipe. The magnetic field at spaced localities along the pipe arising from ... | 06/30/1992 |
| 5097434 | Hybrid signed-digit/logarithmic number system processor The combination of the signed digit (SD) and the logarithmic number system (LNS) for the creation of a hybrid SD/LNS processor. An optimal radix was chosen for the SD system by taking into account both the speed of operations and the memory storage requir... | 03/17/1992 |
| 5087873 | Non-invasive, high resolution detection of electrical currents and electrochemical impedances at spaced localities along a pipeline Electrical current distribution in the soil surrounding a buried pipeline is detected by applying an AC electrical potential between the pipe and a buried electrode spaced from the pipe. The magnetic field at spaced localities along the pipe arising from ... | 02/11/1992 |
| 4826657 | Galvanic coating with ternary alloys containing aluminum and magnesium Galvanic protection of steel is provided by means of coupling thereto of ternary alloys of Al/2.5 to 4% wt. Mg, 0.5 to 3.5% wt. Si, and Al/2.5-4% wt. Mg, 0.5 to 3.5% wt. Ge with teachings of steel having either alloy coupled thereto, as well as the alloys... | 05/02/1989 |
