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Class Information
Number: 401/67
Name: Coating implements with material supply > Solid material for rubbing contact or support therefor > Including means to advance material > Step-by-step > Alternately grasping chucks
Description: Implement wherein the cyclic element and the means for causing movement of the piece comprise two devices that are (1) each reciprocable relative to the guide# and to each other along a common axis, (2) each capable of gripping and releasing either a piece of material or a force transmitting means for said piece, and (3) sequentially operative so that one device grips the piece or the force transmitting means and advances the piece while the other is in a release condition, and then the other device grips the piece or the force transmitting means while the one device releases the piece or the force transmitting means and retracts without moving the piece.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7080950 |
Pencil with buffering effect for preventing a pencil lead from breaking |
Jul. 25, 2006 |
| 6854909 |
Lead propelling device |
Feb. 15, 2005 |
| 6783292 |
Double-chuck mechanical pencil |
Aug. 31, 2004 |
| 6705789 |
Mechanical pencil |
Mar. 16, 2004 |
| 6547466 |
Mechanical pencil |
Apr. 15, 2003 |
| 6517271 |
Double-chuck mechanical pencil |
Feb. 11, 2003 |
| 6517272 |
Double-chuck mechanical pencil |
Feb. 11, 2003 |
| 6379067 |
Double-chuck mechanical pencil |
Apr. 30, 2002 |
| 6334728 |
Double-chuck mechanical pencil |
Jan. 1, 2002 |
| 6247863 |
Press type mechanical pencil |
Jun. 19, 2001 |
| 6203227 |
Double chuck type mechanical pencil |
Mar. 20, 2001 |
| 6203226 |
Side-knock type mechanical pencil |
Mar. 20, 2001 |
| 6089775 |
Retractable-lead mechanical pencil |
Jul. 18, 2000 |
| 6082916 |
Mechanical pencil |
Jul. 4, 2000 |
| 6039485 |
Double-chuck mechanical pencil |
Mar. 21, 2000 |
| 6039484 |
Writing instrument |
Mar. 21, 2000 |
| 5988913 |
Double-chuck mechanical pencil |
Nov. 23, 1999 |
| 5947620 |
Double-chuck mechanical pencil |
Sep. 7, 1999 |
| 5846009 |
Writing tool |
Dec. 8, 1998 |
| 5340224 |
Push-type writing instrument |
Aug. 23, 1994 |
| 5052838 |
Mechanical pencil |
Oct. 1, 1991 |
| 5022772 |
Rotary knock type mechanical pencil |
Jun. 11, 1991 |
| 5004362 |
Mechanical pencil |
Apr. 2, 1991 |
| 4987911 |
Cosmetic pencil |
Jan. 29, 1991 |
| 4979839 |
Mechanical pencil having an automatic lead extending mechanism |
Dec. 25, 1990 |
| 4957384 |
Mechanical pencil |
Sep. 18, 1990 |
| 4895467 |
Rotary knock type mechanical pencil |
Jan. 23, 1990 |
| 4872776 |
Lead chuck of mechanical pencil |
Oct. 10, 1989 |
| 4840508 |
Mechanical pencil capable of automatically propelling successive lengths of lead |
Jun. 20, 1989 |
| 4838721 |
Automatic lead advance for mechanical pencils |
Jun. 13, 1989 |
| 4729684 |
Mechanical pencil |
Mar. 8, 1988 |
| 4720203 |
Push-button type mechanical pencil |
Jan. 19, 1988 |
| 4714365 |
Mechanical pencil |
Dec. 22, 1987 |
| 4705419 |
Mechanical pencil with automatic lead advance |
Nov. 10, 1987 |
| 4663846 |
Cutter having a retractable and removable blade |
May. 12, 1987 |
| 4659327 |
Multiple dosage syringe |
Apr. 21, 1987 |
| 4650359 |
Mechanical pencil with automatic lead advance |
Mar. 17, 1987 |
| 4627756 |
Lead propelling mechanism for a mechanical pencil |
Dec. 9, 1986 |
| 4595306 |
Pencil with sharpener |
Jun. 17, 1986 |
| 4573817 |
Mechanical pencil |
Mar. 4, 1986 |
| 4571105 |
Lead engaging chuck mechanism for mechanical pencil |
Feb. 18, 1986 |
| 4544295 |
Mechanical pencil with self-contained insert |
Oct. 1, 1985 |
| 4538934 |
Automatic lead advancing mechanism for a mechanical pencil |
Sep. 3, 1985 |
| 4521126 |
Mechanical pencil |
Jun. 4, 1985 |
| 4500220 |
Mechanical pencil with removable lead feed cover |
Feb. 19, 1985 |
| 4490061 |
Writing instrument for automatic advancement and feed of leads |
Dec. 25, 1984 |
| 4478529 |
Writing implement with automatic lead projection |
Oct. 23, 1984 |
| 4459057 |
Mechanical pencil with automatic lead advance |
Jul. 10, 1984 |
| 4452544 |
Mechanical pencil with automatic lead feed |
Jun. 5, 1984 |
| 4386865 |
Automatic sharp pencil |
Jun. 7, 1983 |
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