Quotables
"The production of too many useful things results in too many useless people."
Karl Marx
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7232270 | Device for holding writing instruments A device for holding writing instruments for efficiently holding a writing instrument. The device for holding writing instruments includes an outer sleeve, an inner sleeve movably positioned within an inner lumen of the outer sleeve, a plurality of fingers extending... | 06/19/2007 |
| 7207738 | Writing instrument A writing instrument is capable of functioning both as an automatic mechanical pencil and as a shaking-type mechanical pencil. The writing instrument has a barrel cylinder constituted by a front cylinder detachably connected to a rear cylinder. A slider is disposed ... | 04/24/2007 |
| 6974026 | Three-in-one art pack A storage device for writing or drawing implements includes a holder adapted to receive writing or drawing implements. A paper roll is wrapped around the holder. A guide is positioned adjacent to the paper roll and against which the paper can bear. A base is attache... | 12/13/2005 |
| 6854909 | Lead propelling device The lead propelling device of the invention is a lead propelling device having a structure for gripping and releasing the lead by a lead gripping mechanism by knocking operation, not transmitting the knocking force to the lead gripping mechanism in knock forward ope... | 02/15/2005 |
| 6793429 | Chalk holding device A safety chalk holder consisting of a chalk holding member received within the bore of a housing, a closed end of the chalk holding member projecting from one end of the housing, a collet end of the holder projectable into and out of the other end of the housing, a ... | 09/21/2004 |
| 6767150 | Automatic pencil assembly An automatic pencil assembly includes a barrel, a point, an urging member, two clamping members, a slide, a guide pipe, a lead, a cap, and a push member. Thus, the lead is pressed downward by the first plug or second plug of the push member to overcome the holding f... | 07/27/2004 |
| 6547466 | Mechanical pencil A mechanical pencil, includes an external cylinder, a lead delivery mechanism disposed in the external cylinder, the lead delivery mechanism having a lead-fastening chuck which fastens a lead and moves back and forth in the external cylinder to deliver th... | 04/15/2003 |
| 6379067 | Double-chuck mechanical pencil A double-chuck mechanical pencil has an outer tube, a tip fitting provided in the front of the outer tube, a tip chuck located at the tip of the tip fitting for holding a writing substance (e.g., a lead) and urged rearward in the axial directed, and a del... | 04/30/2002 |
| 6247863 | Press type mechanical pencil A press type mechanical pencil includes an upper barrel, a press device, a refill tube, an abutting rod, a clamp/release device and a lower barrel. An insert post of the clamp/release device has a top portion connected to the abutting rod which is central... | 06/19/2001 |
| 6203226 | Side-knock type mechanical pencil A side-knock type mechanical pencil comprising a barrel having an opening in a side wall, a chuck mechanism housed in the forepart of the barrel, a slider moved back and forth within the barrel to open and close the chuck mechanism, a knock lever which is... | 03/20/2001 |
| 6039485 | Double-chuck mechanical pencil A double-chuck mechanical pencil has an outer tube, a tip fitting provided in the front of the outer tube, a tip chuck located at the tip of the tip fitting for holding a writing substance (e.g., a lead) and urged rearward in the axial directed, and a del... | 03/21/2000 |
| 5826999 | Mechanical pencil A mechanical pencil providing a cushioning action by the action of a sleeve disposed inside of an outer barrel. The mechanical pencil comprises an outer barrel, and a lead pipe disposed inside the outer barrel. The lead pipe has a chuck mounted in the end... | 10/27/1998 |
| 5362166 | Flat stick-shaped material propelling container A stick-shaped material propelling container comprised of a flat-shaped outer sleeve, a chuck in the form of tweezers having a pair of opposing flat arms inserted into the outer sleeve and having a base in the rear portion thereof, and a chuck ring connec... | 11/08/1994 |
| 5354141 | Mechanical pencil with shaking type lead-feeding mechanism A longitudinal opening window (1B) is formed a: a rear end portion of a cylindrical casing (1) of a mechanical pencil. At the rear end of the cylindrical casing (1), an eraser holder (12) is disposed in such a way that it can move forward and rearward for... | 10/11/1994 |
| 5340224 | Push-type writing instrument A push-type writing instrument, particularly a pencil, includes a retaining collar downwardly protruded from a pair of radially opposed fingers provided on a tapered forward portion of an outer body in which a lead is retained, having two arm members with... | 08/23/1994 |
| 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 |
| 5199807 | Knocking type solid cosmetic container A knocking type solid cosmetics container which comprises a container main body 1 comprising; a cylindrical pushrod housing pipe 6 inserted in the container main body 1; a delivery chuck 9 fixedly provided on a front end of the pushrod housing pipe 6, a p... | 04/06/1993 |
| 5171097 | Mechanical pencil with lead-feeding device operable by forward shake In a mechanical pencil, a tubular lead reservoir is connected to the rearward end of a lead chuck. A cylindrical weight is fitted slidably around the lead reservoir and is adapted to strike against the chuck to open the same to allow forward feed of the l... | 12/15/1992 |
| 5165812 | Lead writing instrument with selective locking of chuck A refill lead writing instrument for stepped advancement of a lead has a spring biased clamping device for holding a lead in direction of its longitudinal axis against a writing pressure. The clamping device includes a clamping chuck supported in a clampi... | 11/24/1992 |
| 5165813 | Container with snap-in chuck and chuck ring A container for extending a stick-shaped material comprises a tubular body and a chuck formed on the tubular body inserted into a chuck ring. The tubular body and the chuck ring are provided with first and second deflectable projecting parts respectively,... | 11/24/1992 |
| 5139356 | Side actuated writing implement A side actuated writing implement wherein projections are provided to prevent the wave-shaped actuating member from straightening out.... | 08/18/1992 |
| 5033894 | Mechanical pencil with tapered supply chamber A knock-out type mechanical pencil which comprises a lead containing tube in which the inner and outer walls thereof are so tapered that the lead inlet thereof is larger in diameter than the opposite end thereof. The mechanical pencil further comprises a ... | 07/23/1991 |
| 5009533 | Propelling pencil with cushion sleeve A knock-type propelling pencil includes a lead pipe inserted into an outer cylinder and having a lead chuck at the end portion thereof, a chuck-fastening tube for fastening the lead chuck, a cushion sleeve coming into contact with the chuck-fastening tube... | 04/23/1991 |
| 4979839 | Mechanical pencil having an automatic lead extending mechanism A mechanical pencil having an automatic lead extending mechanism which has a radially displaceable member disposed on an entire circumference of the pencil body. The lead protrudes from a tip end of the pencil body when the radially displaceable member is... | 12/25/1990 |
| 4976560 | Mechanical pencil with a plastic chuck A mechanical pencil with a chuck made of plastics includes a lead case connected with the chuck, a ring arranged to surround and hold the chuck, and a spring for biasing the chuck toward a position where it is engaged with the ring, all of which are dispo... | 12/11/1990 |
| 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 |
| 4872776 | Lead chuck of mechanical pencil A lead chuck of a mechanical pencil to be assembled into a lead feeding mechanism of a rear end knock type, an automatic lead feeding type and an extremity end knock type mechanical pencil in which it is arranged within the sleeve through a resilient memb... | 10/10/1989 |
| 4856693 | Working out container of bar shaped article This invention relates to a container for feeding a bar shaped article such as an erasing gum, a pencil lead, a crayon, a pastel, or an eyebrow stick, especially for advancing or retracting the bar shaped article. A bar shaped article (8) is inserted into... | 08/15/1989 |
| 4844639 | Push-type writing instrument A push-type writing instrument essentially comprising an outer body having a tapered forward portion in which lead is retained. The lead is retained by a pair of radially opposed fingers provided on the tapered forward portion for frictional engagement wi... | 07/04/1989 |
| 4840508 | Mechanical pencil capable of automatically propelling successive lengths of lead A mechanical pencil has a body with a lead storage chamber defined therein for housing spare lengths of lead, and a tubular lead guide receiving a length of lead and coaxially mounted in the body so as to partly protrude outwardly from its writing end. Du... | 06/20/1989 |
| 4729684 | Mechanical pencil Mechanical pencil in which a chuck assembly for gripping a lead is formed with plural chuck elements mutually combined with each other. The chuck assembly has an internal longitudinal hole to insert a lead through and a lead gripping portion to grip the l... | 03/08/1988 |
| 4720203 | Push-button type mechanical pencil A push-button type mechanical pencil consisting of a barrel which is composed of a clip-carrying upper barrel member and a metal tip-carrying lower barrel member, which barrel members are engaged with each other at a substantially intermediate portion of ... | 01/19/1988 |
| 4714365 | Mechanical pencil A mechanical pencil wherein a slider 11 in contact with a lead and an outer tube 1 with different frictional resistances other than a lead delivery mechanism for effecting lead-feed by general knocking operation are provided within the outer tube 1 or a f... | 12/22/1987 |
| 4676684 | Lead delivery mechanism for mechanical pencil A lead delivery mechanism is integrally composed of a lead chuck for biting lead fitted to the extreme end of a lead pipe, sleeves abutting upon a chuck clamping ring loosely fitted to the head portion of the lead chuck, a spring member for clamping the c... | 06/30/1987 |
| 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 |
| 4650359 | Mechanical pencil with automatic lead advance A mechanical pencil having a chuck mechanism which permits the lead to advance but prevents the lead from retracting, a first slider, a second slider which is retractable progressively as a writing pressure is applied, a first engagement device for holdin... | 03/17/1987 |
| 4627756 | Lead propelling mechanism for a mechanical pencil A lead propelling mechanism for a mechanical pencil includes a lead chuck, a ring fitted loosely about the chuck for tightening its head, a sleeve having a front end contacting the ring, and an elastic member having a front end bearing on the front end of... | 12/09/1986 |
| 4603991 | Connector for propelling pencil A propelling pencil comprising an outer cylinder made of synthetic resin which can be easily molded as a unitary structure and an engaging member incorporating a chuck device including a lead propelling mechanism, the engaging member being detachably inse... | 08/05/1986 |
| 4595306 | Pencil with sharpener An automatic pencil with a lead-sharpening device, has a pencil lead of a diameter of 2 mm inserted into the pipe sleeve of the pencil case in which a lead-sharpening knife holder is attached. Whenever the lead becomes dull, the user presses and turns the... | 06/17/1986 |
