Title:
ROTARY ADVANCEMENT-TYPE WRITING IMPLEMENT
Document Type and Number:
WIPO Patent Application WO/2007/010656
Kind Code:
A1
Abstract:
A rotary advancement-type writing implement in which a tip fitting and lead can
be continuously and smoothly advanced and retracted by a simpler structure.
The writing implement has a rear outer tube (2), an inner sheath (4) non-rotatably
received in the rear outer tube (2), and a front outer tube (10) through which a
tip fitting (12) and lead (13) can be advanced and retracted. On the inner sheath
(4) are formed a projection (45) for rotation range limitation, a cam (42) for
refill sliding, and a cam (43) for tip-fitting sliding. A refill sliding body
(6) and a tip-fitting sliding body (7) are received in the sheath (4). The tip fitting
sliding body (7) is connected to the refill sliding body (6), and a connection
body (9) is connected to the inner sheath (4). When the rear outer tube (2) is rotated
in one direction relative to the connection body (9), the tip fitting and the lead
reach a position projected from an opening of the front outer tube (10). When the
rear outer tube (2) is further rotated, the tip of the lead reaches a position projected
from an opening in a front end surface of the tip fitting.
Inventors:
SAITO KOUKI (JP)
Application Number:
PCT/JP2006/308428
Publication Date:
January 25, 2007
Filing Date:
April 21, 2006
Export Citation:
Assignee:
PILOT CORP (JP)
SAITO KOUKI (JP)
SAITO KOUKI (JP)
International Classes:
B43K24/06
Foreign References:
| JPH0732133Y2 | 1995-07-26 | |||
| JPS4524978Y1 | 1970-09-30 | |||
| JPS6387072U | 1988-06-07 |
Attorney, Agent or Firm:
NIWA, Hiroyuki et al. (Shimbashi 1-chome Minato-k, Tokyo 04, JP)
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