Mechanical pencil with lead-feeding device operable by forward shake of pencil

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4205924
SERIAL NO

05961506

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A lead-feeding mechanism comprising a lead reservoir, a connector, and a chuck in a mechanical pencil is held by a front spring in a normal rear position, at which the chuck is clamping a lead piece, but when a forward shake is imparted to the pencil, a weight collides forwardly with the lead-feeding mechanism and pushes the same forward, counter to the force of the spring, whereupon the chuck feeds the lead piece through a specific distance then releases the same, the lead-feeding mechanism being subsequently returned by the spring to the normal position, where the chuck again clamps the lead piece at a new position thereof.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • PILOT PRECISION KABUSHIKI KAISHA

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sumita, Yo Machida, JP 2 18

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation