Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7389588 | Semi-automatic pencil sharpener The present invention relates to a semi-automatic pencil sharpener comprising a sharpening body and a blade; the sharpening body has a conical bore with a throughslot for allowing shavings to go out; and the blade is disposed outside the sharpening body on one side ... | 06/24/2008 |
| 7278214 | Electric pencil sharpener An electric pencil sharpener includes a power source, such as a plurality of batteries, disposed within a base portion. The electrical pencil sharpener further includes a housing portion connected to the base portion and a motor disposed within the housing portion, ... | 10/09/2007 |
| 7143516 | Pencil sharpener cap The present invention involves a pencil sharpener that is housed in a pencil cap, having a variable-sized shavings reservoir. The shavings reservoir can be expanded by moving at least one of an internal wall, an external wall, and the sharpener. Contemplated caps co... | 12/05/2006 |
| 7134461 | Pencil sharpener A pencil sharpener includes a frame, a drive mechanism, a transmission mechanism, a cutting mechanism, and a pencil-core adjustment mechanism. The pencil-core adjustment mechanism is constituted of a core stopper shaft, an elastic body, and a core adjustment switch ... | 11/14/2006 |
| 6944960 | Crayon sharpener The present invention relates to a crayon sharpener, which comprises a cavity to which a crayon is to be inserted, a stopper with a plane at one end, a blade which is fixed at an angle corresponding to the cavity and the stopper, and a connecting shaft which has a h... | 09/20/2005 |
| 6886614 | Pencil sharpener A pencil sharpener having a sharpening sub-assembly for sharpening pencils, and first and second external shells having internal ribs defining surfaces for supporting the sharpening sub-assembly. Components of the sub-assembly are placed into corresponding portions ... | 05/03/2005 |
| 6725549 | Sliding sharpening device for pencil with non-circular cross section A sharpener for a carpenter's pencil that creates a profile shape desired by carpenters rather than a conical point. One end of the sharpener creates a sharpened profile on the narrow side of the pencil, while the opposite end of the sharpener creates a sharpened pr... | 04/27/2004 |
| 6634108 | Sharpener for sharpening a soft-core pencil A sharpener, in particular for a soft-core pencil, has a sharpener housing with a sharpener channel that opens out into a free space via a channel opening. The sharpener has a sharpener blade that is positioned tangentially against the channel opening. Th... | 10/21/2003 |
| 6397479 | Sharpener, in particular for soft-core pencils A sharpener, in particular for soft-core pencils, includes a sharpener housing which carries a sharpener blade positioned tangentially in relation to a sharpener channel. The housing also has a free space that is open on a lower side of the housing. A cor... | 06/04/2002 |
| 6381856 | Hand-held sharpener as a container-type sharpener A container-type sharpener is provided with a generator that can be manually operated or set off and provides an acoustic or visual effect. For this purpose, a shavings-collecting container is configured to be compressible against a flexible restoring pre... | 05/07/2002 |
| 6286218 | Sharpener, in particular for soft-core pencils A sharpener contains a housing having a receiving channel for a pencil which is to be sharpened. The sharpener is intended to be seated as a protective cap, when the pencil is not in use, with a clamping fit on the pencil circumference. The clamping conne... | 09/11/2001 |
| 5894669 | Sharpener for soft core pencils A pencil sharpener for a soft core pencil includes a sharpener housing defining a guide channel adapted to receive a front region of the pencil therein and conically tapering in an insertion direction of the pencil, and a free space adjoining the guide ch... | 04/20/1999 |
| 5845406 | Soft core pencil sharpener including cleaning shaper A sharpener for a soft core pencil having a pencil end to be sharpened, the pencil end including a free core end, the sharpener comprising a housing defining: a guide conduit therein for receiving the pencil end to be sharpened; and a hollow space adjacen... | 12/08/1998 |
| 5394613 | Spring-driven pencil sharpener A spring-driven pencil sharpener is disclosed, including a top cap having a top opening to receive a pencil and two corresponding slots to receive a fastening device including a couple of hollow frames, a housing which is constructed with a pair of coupli... | 03/07/1995 |
| 5205664 | Lead-auto-sharpened propelling pencil and the making process thereof The present invention provides a lead-auto-sharpened propelling pencil and a process of making it. The propelling pencil comprises a pencil body and a pencil cap. The pencil cap consists of a sharpener, a screwing insert and a powder remover. The process ... | 04/27/1993 |
| 5046876 | Safety tipped pencil and sharpener therefor A pencil and a shrapener for forming the pencil with a safety tip comprising a curved, circular surface. In cross-section, the curved surface appears as two intersecting circles. The tip is thus a curved, circular surface of revolution with a sufficient r... | 09/10/1991 |
| 4761885 | Sharpener for compass leads and pencil leads A conventional means for sharpening leads consists of a flat stick covered with abrasive paper strips that do not prevent lead residue from falling out onto desks, equipment, hands and drawings. Cone shaped lead sharpeners are known but when used for comp... | 08/09/1988 |
| 4755074 | Pencil sharpener The disclosure is directed to a pencil sharpener device in which the sharpening element is slidably mounted within a support member for movement between a retracted position when not in use to a protracted position for use in sharpening the pencil. When i... | 07/05/1988 |
| 4513798 | Sharpener, specifically for cosmetic sticks A sharpener for sharpening an end of a writing stick by inserting the writing stick into the sharpener in a retentive or friction locking manner and rotating the sharpener and writing stick relative to each other, the sharpening of the writing stick gener... | 04/30/1985 |
| 4124048 | Lead sharpener A lead sharpener comprises a housing formed by relatively rotatable lower and upper housing portions containing a milling cutter of which the operating face extends at an acute angle to the longitudinal axis of a guide passage through which the lead that ... | 11/07/1978 |
| 4066109 | Pencil sharpener with replaceable blades A hand-held pencil sharpener is disclosed which utilizes a common double-edged safety razor blade that may be easily removed and replaced when worn. The pencil sharpener has spaced, generally parallel tapered bores of varying sizes selectively to guide pe... | 01/03/1978 |
