The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 1985
Filed:
Nov. 21, 1983
Gerold Anderka, Ellerbek, DE;
Rolf Tenhagen, Henstedt-Ulzburg, DE;
Rotring-Werke Riepe KG, Hamburg, DE;
Abstract
A writing instrument of the type having a cylindrical body (1), with a forward end that carries a writing tubule (4) and an inner bore which communicates with the writing tip. A separate sheath body (15) is adapted to be covered by a sheath element (9). The sheath body is pushed onto the rearward end of the cylindrical body (1) and defines a compensating chamber (12, 14) on each of its outer and inner faces. The compensating chambers are connected proximate their rearward ends by a connecting bore (13). The inner compensating chamber (14) communicates with the inner bore through a transverse bore (7) provided in the forward area of the cylindrical body (1). A writing fluid tank (11) is mounted by being pushed onto the rearward end of the cylindrical body (1).