发明名称 |
Expandable Writing Instrument |
摘要 |
An expandable writing instrument has a writing end body section and a rear body section mounted to the writing end body section for relative axial and non-rotational movement between an extended position with the rear body section spaced away from the writing end body section, and a retracted position with the rear body section closer to the writing end body section. A spring in the writing end body section biases the cartridge upwardly. A helix cylinder is mounted for rotation and axial movement in the rear body section with a peg of the rear body section sliding in a track of the helix cylinder. The track is a closed loop with left and right hand helixes so that axial movement of the rear body section causes rotation of the helix cylinder continuously in one rotational direction. A shuttle receives a cartridge body and is mounted for axial movement in the helix cylinder. A shuttle cam on the shuttle is mounted for axial non-rotational movement to the writing end body section. Shuttle cam surfaces slidably engage cam surfaces of the helix cylinder and the cam surfaces include a high point that engages a flat portion of another cam surface for moving the shuttle with rotation of the helix cylinder, to project a writing tip of a cartridge out of the bottom opening in the extended position.
|
申请公布号 |
US2011268491(A1) |
申请公布日期 |
2011.11.03 |
申请号 |
US20100771509 |
申请日期 |
2010.04.30 |
申请人 |
GREGORY REBECCA;REEKIE GEORGE;ROBERTS MICHAEL;SANTOS DONALD;TORNGREN FRANK |
发明人 |
GREGORY REBECCA;REEKIE GEORGE;ROBERTS MICHAEL;SANTOS DONALD;TORNGREN FRANK |
分类号 |
B43K24/02 |
主分类号 |
B43K24/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|