Coating implements with material supply – Projectable and retractable tool – Including retraction spring and projected-position retainer
Patent
1994-11-09
1998-03-10
Hafer, Roberta A.
Coating implements with material supply
Projectable and retractable tool
Including retraction spring and projected-position retainer
401107, 401109, 401117, B43K 516, B43K 712
Patent
active
057253234
ABSTRACT:
A writing implement of the type that incorporates a writing element which has the characteristic of deteriorating in the presence of air is disclosed. It comprises a housing and a writing element contained in the housing. A bias member for urging the writing element into a retracted position and a sealing closure member which is configured to be closed by the housing in the retracted position are provided. A stud is associated with the writing element. A mating stud is associated with the housing and adapted to frictionally engage the stud. The coefficient of friction between the stud and the mating stud is insufficient to overcome the urging of the bias member and prevent movement between the studs, whereby the writing element is driven to the retracted position.
REFERENCES:
patent: 3181507 (1965-05-01), Dannebaum
patent: 3230934 (1966-01-01), Eriksson
patent: 4711592 (1987-12-01), Gregory
patent: 4759650 (1988-07-01), Granoff
patent: 4859103 (1989-08-01), Wittek
patent: 5022773 (1991-06-01), Waldinger et al.
Hafer Roberta A.
Intergraph Office Innovation N.V.
Muir D. Neal
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