Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to advance material
Patent
1977-03-07
1979-02-27
Coven, Edward M.
Coating implements with material supply
Solid material for rubbing contact or support therefor
Including means to advance material
401 77, B43K 2406
Patent
active
041416635
ABSTRACT:
An improved, jam-resistant, relatively low cost pencil mechanism is provided which includes an annular resilient member disposed about the nose bushing of the mechanism for securely locking the bushing and lead guide connected thereto in place within the pencil barrel, while at the same time allowing the pencil tip and lead guide to be threadably interconnected without creating open thread discontinuities along the length of the lead path. The resilient member serves to take up any dimensional irregularities in the pencil mechanism components and allow full threaded interlocking of the pencil tip and lead guide so that no exposed threads are present along the lead path, which can cause jamming of the mechanism if the pencil lead becomes broken within the guide. In preferred forms, the resilient member is of annular, tapered configuration permitting telescopic positioning thereof within the pencil barrel without disruption or axial roll-up of the member.
REFERENCES:
patent: 2023865 (1935-12-01), Weaver et al.
patent: 2523568 (1950-09-01), Halverson
patent: 2573325 (1951-10-01), Fowlie
patent: 3492077 (1970-01-01), Tessier
patent: 3630628 (1971-12-01), Roman
patent: 3804536 (1974-04-01), Torii et al.
patent: 3917418 (1975-11-01), Lanoie
Coven Edward M.
Hallmark Cards Incorporated
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