US 7,467,904 B1Granted

Tree-ring chronology pens, pencils, key chains, and other commonly used articles

OwnerDavid Joseph Wagerinventor

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Abstract

A pen comprising wood originating from cutting a tree transversely so it displays a tree's cross section. As a result of the transverse cutting, the product displays a tree's annual growth rings along one axis of the object. Tree-ring analysis is carried out in order to accurately date and subsequently mark the date on one or more of the annual growth rings on the pen. In addition to its operation as a writing instrument, the pen is operated as memorabilia that serves as a “natural” annual chart for important dates of an individual, company, organization, or other entity; a physical object to communicate the natural history of a tree's existence and/or the natural history of its surrounding environment; an educational tool to assist in teaching concepts of dendrochronology and related disciplines (dendroclimatology, dendroarchaeology, dendroecology).

Claims2

Dependent claims

A writing instrument, comprising:

(a) a writing element that leaves a marking line if moved across paper or other similar surfaces, and
(b) a wood elongated holder surrounding and encasing said writing element, and with said wood made from cutting a tree transversely so the direction of the grain of said wood runs substantially perpendicular to a longitudinal axis of said elongated holder to thereby reveal said tree's annual rings which extend circumferentially around said elongated holder, and
(c) a marking of the year of said tree's wood formation on one or more of the annual rings as means for displaying the tree-ring chronology through the writing instrument, and
(d) whereby said writing instrument becomes memorabilia that serves as a natural annual chart for important dates of an individual, company, organization, or other entity, and whereby said writing instrument can communicate the natural history of said tree's existence and the natural history of its surrounding environment.

1 more element

Dependencies are inferred from the claim text.