Knock type mechanical pencil connection

Details Knock type mechanical pencil connection Knock type mechanical pencil connection

1987-10-26

1989-02-21

Bratlie, Steven A.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 65, 401251, 411517, 411521, B43K 1500, B43K 2100

Patent

active

048060380

ABSTRACT:
The lead reservoir and feed mechanism of a knock type mechanical pencil is secured to the tubular barrel in which it is housed by a resilient locking sleeve positioned in a groove near the front of the feed mechanism and a spring compressed between a rearwardly facing internal abutment on the feed mechanism. The spring urges the lead reservoir and feed mechanism rearwardly into the barrel to a position where an external flange on the locking sleeve abuts the front end of the barrel.

REFERENCES:
patent: 278201 (1883-05-01), Tegardine
patent: 1735224 (1929-11-01), Wahl
patent: 2119645 (1938-06-01), Pearson
patent: 2213033 (1940-08-01), Ashmore
patent: 2883967 (1959-04-01), Tessier
patent: 3492077 (1970-01-01), Tessier

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