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| Number | Title | Issue Date |
| 6893178 | Offset pen structure The present invention relates to an offset pen comprising a holding portion, a writing portion, and an intermediate portion, in which said holding portion is provided for a user to operate by hand, said writing portion is provided with a pen tip for writing, in whic... | 05/17/2005 |
| 6161976 | Automatic writing apparatus for segmental writing elements with caps An automatic writing apparatus includes a plurality of writing elements axially positioned one by one, each of which has a tip portion at the front end and an element cap having a hole for receiving therein the tip portion of an adjacent one of the writin... | 12/19/2000 |
| 5791798 | Multi-purpose writing instrument A multi-purpose writing instrument having a series of writing tips for various uses includes a hollow tubular mounting having a mounting wall surrounding a through hole, an upper end of the mounting wall forming a mounting step with inner threads. A lower... | 08/11/1998 |
| 5299341 | Rotating keyboard cleaner A rotating keyboard cleaner includes a container having openings at the top and at the bottom, and a removable cap that fits frictionally over the top opening. Inside the container is a plurality of units, each unit including a capsule with a cleaning hea... | 04/05/1994 |
| 5292202 | Retractable, refillable, sharpen-free pencil assembly A retractable, refillable, sharpen-free pencil assembly comprises an outer tube, an inner tube and several sections of pre-sharpened leads. The inner tube is movable relative to the outer tube. An upper half portion of the inner tube is enlarged by fittin... | 03/08/1994 |
| 5221151 | Mechanical writing apparatus with a mechanism for retracting presharpened pencil lead elements A writing apparatus with retractable presharpened pencil lead elements is disclosed having an outer pen holder, an inner cylinder slidably mounted within the outer pen holder, a compression spring to bias the inner cylinder toward an end of the outer pen ... | 06/22/1993 |
| 5221152 | Writing instrument with cap The tubular main body of a writing instrument has a cylinder the writing end of which is formed to include a cap-fitting portion. A gripping portion, which is formed on the cylinder below the cap-fitting portion, has an outer peripheral surface provided w... | 06/22/1993 |
| 4966478 | Mechanically controlled-writing apparatus with presharpened pencil lead elements A mechanically controlled writing apparatus with presharpened pencil lead elements generally comprises of an inner cylinder and a pen-holder. The inner cylinder is a straight hollow tube, having two elongated piercing grooves vertically made at the bottom... | 10/30/1990 |
| 4944622 | Writing implement This invention relates to a writing implement including an elongated tube having an upper open end and a lower end in which a clamping device and a propelling device are mounted, as well as a central bore extended from the upper open end to the clamping d... | 07/31/1990 |
| 4938626 | Lead-replaceable writing implement with multiple lead channels A lead-replaceable writing implement including an outer tube, an inner rod received in the outer tube and formed with multiple lead channels and a push rod, a rotary tube partially inserted into a lower end of the outer tube, and a lead holder received in... | 07/03/1990 |
| 4919556 | Writing implement having simplified lead-feeding mechanism A useful writing implement which comprises an outer casing and an inner tube inserted into the outer casing for storing a plurality of presharpened leads. The outer casing has an intregrally formed protrudent flexible elongated reduced neck portion for re... | 04/24/1990 |
| 4659242 | Lead loading mechanical pencil A mechanical pencil having an exchangeable lead storing container has a feeding mechanism provided at one end with a coupling pin which snugly fits a coupling recess formed in the storing cartridge. The feeding opening connecting the interior of the cartr... | 04/21/1987 |
| 4657421 | Mechanical pencil An improvement in the mechanical pencil of the type shown in U.S. Pat. No. 4,320,982. The improved mechanical pencil has a tubular outer casing, a coil spring disposed within the outer casing and an inner tube slidably inserted through the outer casing an... | 04/14/1987 |
| 4415092 | Holder for uniformly shaped articles An open-ended holder for releasably supporting a number of uniformly shaped elongated articles. The holder will release one article as another is pushed into its place. One article can be used to directly push another from its individual holding chamber w... | 11/15/1983 |
| 4376590 | Writing implement This invention relates to a writing implement comprising an outer casing, a coil spring disposed within the casing, an inner tube inserted through the coil spring and having a plurality of presharpened pieces of pencil lead stored therewithin, and a cappi... | 03/15/1983 |
| 4320982 | Writing implement This invention relates to a writing implement comprising an outer casing, a coil spring disposed within the casing, an inner tube inserted through the coil spring and having a plurality of presharpened pieces of pencil lead stored therewithin, and a cappi... | 03/23/1982 |
| 4219282 | Writing implement This invention relates to a writing implement comprising an outer casing, a coil spring disposed within the casing, an inner tube inserted through the coil spring and having a plurality of presharpened leads stored therewithin, and a capping member insert... | 08/26/1980 |
