Patent ID: 6488429
Filing Date: 2002-12-03
Classification: B43K

Abstract:
A marker system for delivering marker liquid to a surface to be marked, said system comprising:a housing adapted to be hand-held and defining an enclosed volume containing the marker liquid, said housing having a distal end; a porous marker nib secured in said housing and having a tip projecting from said distal end of said housing; and transfer means disposed within said housing for providing resistance to flow of liquid therethrough, said resistance being sufficient to block said flow in the absence of a predetermined pressure drop distally across said transfer means, but delivering capillary flow of the contained marker liquid from said enclosed volume to said nib in response to pressurization of said enclosed volume equal to at least said predetermined pressure above ambient pressure; wherein said housing is at least partially resiliently squeezably compressible by a human hand in which the housing is held to permit selective pressurization of said enclosed volume.