Patent ID: 6247863
Filing Date: 2001-06-19
Classification: B43K

Abstract:
A press type mechanical pencil comprising an upper barrel having a top portion with an opening portion provided with a limiting means receiving and positioning a press rod of a thrust device, the upper barrel having a bottom portion provided with a connecting portion engaging with a connecting portion at a top portion of a lower barrel, the lower barrel having a bottom portion with an inner wall provided with a stop, a tapered portion at a rear end thereof having an end hole, a clamp/release device being provided in the lower barrel and including a stepped rod having a rod slot in a top portion thereof receiving a spring and an insert post sequentially, and a bottom portion with an annular slot receiving a clamp/release ring, an annular rim at an end portion thereof serving as a limit for downward displacement, a clamping rod atop a clamping pawl passing through the clamp/release ring, at least two pawl portions at a bottom portion of the clamping pawl, due to the relative movement of the insert post, the spring and the clamp/release ring, causing a refill therein to be displaced and extend out of the end hole for writing purposes, whereinthe insert post of the clamp/release device has a top portion connected to an abutting rod which is centrally provided with a refill hole for passage of the refill, a refill tube being disposed between the abutting rod and the thrust device, a storage tube having a tube chamber receiving a plurality of refills, and an open end connected to a tube plug, the tube plug being adapted to guide the refills and for connection with the abutting rod, a neck hole therein providing passage for only one refill through the refill hole into the clamp/release device.