Mechanical pencil having side push button actuated lead advance

Details Mechanical pencil having side push button actuated lead advance Mechanical pencil having side push button actuated lead advance

1988-10-21

1990-09-11

Apley, Richard J.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 85, 401 92, B43K 2116

Patent

active

049557394

ABSTRACT:
A mechanical pencil is disclosed in which lead can be advanced in one of two ways; either automatically upon release of writing pressure on the pencil, or selectively manually by pressing inwardly against a side push button. The pencil includes an outer cylinder with a side pushing hole formed therein, and a side push button movably disposed in the side pushing hole. The side push button contacts a lever which is totally mounted within the outer cylinder and which contacts a lead advanced mechanism. Upon pressing in of the side push button, the lever is pivoted about its axis and caused to press downwardly against the lead advance mechanism to thereby cause advancement of a lead. Advancement of lead is also performed upon release of writing pressure of the pencil by way of a slider mechanism which is biased outwardly by way of a resilient member and which is forced outwardly by the resilient member upon release of writing pressure. This causes the slider to pull a lead forwardly to provide advancement thereof.

REFERENCES:
patent: 3836264 (1974-09-01), Saito et al.
patent: 3854824 (1974-12-01), Kamo
patent: 3883253 (1975-05-01), Naruse et al.
patent: 4149813 (1979-04-01), Katz et al.
patent: 4504163 (1985-03-01), Hashimoto et al.
patent: 4521126 (1985-06-01), Sakaoka et al.

Affiliated with

Also associated with

Rating

Mechanical pencil having side push button actuated lead advance does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanical pencil having side push button actuated lead advance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanical pencil having side push button actuated lead advance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1180754