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| Number | Title | Issue Date |
| 7237972 | Automatic mechanical pencil and method of assembly thereof An automatic mechanical pencil has a tubular piece removably connected to a barrel cylinder, and a slider for frictionally holding a lead and being movably disposed in a front portion of the tubular piece. A lead chuck is disposed in the barrel cylinder for releasab... | 07/03/2007 |
| 6126350 | Writing utensil A writing instrument is provided in which assembling thereof can be finished by inserting a writing medium advancing mechanism into an outer barrel from the rear end side thereof, in which the outer appearance thereof is not injured and the assembling the... | 10/03/2000 |
| 5662425 | Stick-shaped material propelling container A stick-shaped material propelling container is comprised of a tubular body provided with a spiral groove in the inside thereof, a guide sleeve inserted into the tubular body that is not movable in an axial direction, but rotatable relative to the tubular... | 09/02/1997 |
| 5509743 | Cartridge for automatic pencil An automatic-pencil cartridge includes a lead automatic compensation device which is in the front section of the cartridge and which can be triggered to automatically output the lead for further writing when the lead is worn out and unsuitable for writing... | 04/23/1996 |
| 5004362 | Mechanical pencil A mechanical pencil which employs the concept of inverting the configuration of a conventional mechanical pencil by designating the depressible end as the writing end and the stationary end as the eraser and thereby providing the convenience of advancing ... | 04/02/1991 |
| 4884910 | Mechanical pencil A mechanical pencil is disclosed in which lead feed occurs automatically upon lifting of the pencil from the paper surface or the like and in which the slider can be locked in a retreated position when the pencil is not in us. The mechanical pencil includ... | 12/05/1989 |
| 4838721 | Automatic lead advance for mechanical pencils An automatic lead advance for a mechanical pencil having a tubular casing, a conical member joined to the front end portion of the tubular casing, a ring fixed to the inner surface of the conical member, an annular pivotable member provided at the front s... | 06/13/1989 |
| 4809023 | Automatic pencil device for automatic drafting and writing machines An automatic lead pencil device has a casing which is releasably mountable in a bracket of a drafting machine. Within the casing, there is a clamp sleeve in which a clamping member is axially movable for clamping and releasing a lead during use of the pen... | 02/28/1989 |
| 4705419 | Mechanical pencil with automatic lead advance A mechanical pencil for automatic drawing machines is disclosed which feeds lead segments to the writing surface as the pencil is alternately pressed against and lifted from the writing surface. The pencil includes a housing having a reserve lead containm... | 11/10/1987 |
| 4702634 | Continuous feed mechanical pencil with push button lead feed actuator A continuous feed mechanical pencil includes a lead cartridge having a lead advancing mechanism responsive to forward axial movement of an actuator button protruding from the rear end of the instrument, the actuator button being fixedly attached to a pock... | 10/27/1987 |
| 4696594 | Cosmetic pencil having advanceable cosmetic mass A cosmetic pencil containing a cosmetic mass in a thin pencil lead-like configuration. The pencil has a cosmetic mass or crayon-containing sheath and the cosmetic mass may be metered from the pencil by moving a gripping disk inwardly with respect to the s... | 09/29/1987 |
| 4687363 | Mechanical pencil and method for assembling the same A mechanical pencil in which a lead delivery mechanism composed of a lead tank part, a lead chuck, a chuck ring, a sleeve having a stopper and the like is inserted into an outer cylinder having a stopper engaging portion from the rear of the outer cylinde... | 08/18/1987 |
| 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 |
| 4573817 | Mechanical pencil A mechanical pencil having a cylindrical barrel (1) and a sheath (2) in axial relationship is disclosed. A spiral member (4) in fixed relationship with the sheath and in axially sliding relationship with the barrel for a predetermined range engages a slid... | 03/04/1986 |
| 4571105 | Lead engaging chuck mechanism for mechanical pencil A chuck mechanism incorporated in a mechanical pencil has a plurality of chuck elements in a longitudinal confronting relation. The chuck elements have a pivotal support or fulcrum at their opposing rearward portions so that the elements are pivotable abo... | 02/18/1986 |
| 4538934 | Automatic lead advancing mechanism for a mechanical pencil An automatic lead advancing mechanism for a mechanical pencil has at its writing point a lead guide tube which is movable axially against a clamping member to cause radially movable components of the clamping member to clamp the lead therein during the wr... | 09/03/1985 |
| 4504163 | Mechanical pencil with automatic lead advance A mechanical pencil having a writing point tube slidably mounted on the forward end portion of a pencil casing, an annular slider device slidably mounted within the pencil casing and having a lead retainer, a first spring for urging the writing point tube... | 03/12/1985 |
| 4500220 | Mechanical pencil with removable lead feed cover A mechanical pencil includes a removable tubular cover which has functions to protect a tip of the pencil and also to advance automatically the lead therein a tiny increment to project from the pencil tip when it is attached to a rear end of the pencil fo... | 02/19/1985 |
| 4490061 | Writing instrument for automatic advancement and feed of leads A writing instrument with automatic advancement and feed of successive leads has a housing having a tip part, a lead protecting pipe having an axis and movable in an axial direction, a lead container spaced from the lead protecting pipe in the axial direc... | 12/25/1984 |
| 4478529 | Writing implement with automatic lead projection A propelling or automatic writing implement having a lead which can be projected from the implement without pushing. An inner frame having a chuck assembly for permitting advance of the lead but preventing retraction of the lead and a lead protecting tube... | 10/23/1984 |
| 4459057 | Mechanical pencil with automatic lead advance A mechanical pencil with automatic lead advance in which a slider is temporarily locked at the time when a rearward thrust applied to the pencil tip is released. The slider is locked by an arrangement in which a movable locking tube is disposed around the... | 07/10/1984 |
| 4452544 | Mechanical pencil with automatic lead feed A mechanical pencil with automatic lead feed has a clamping mechanism for clamping a lead in such a manner that it holds the lead steadily against rearward movement but easily permits the lead to move forwardly. A lead tube is fixed at its rear end to the... | 06/05/1984 |
| 4411543 | Self-feeding mechanical pencil A mechanical pencil is of the type in which a writing lead can be advanced by the extent to which the lead has been worn without changing the writing posture of the pencil. The pencil has a lead holder slidably mounted lengthwise within a casing, a lead g... | 10/25/1983 |
| 4311402 | Container for lipstick and like products In a lipstick container of basically orthodox type, comprising a body and sleeve with co-operating axial and helical slots to impart axial movement to a lipstick-bearing cup on relative rotation, there is a breakable web across one of the slots, preferabl... | 01/19/1982 |
