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:
Feb. 22, 2000
Filed:
Sep. 15, 1994
Karunasena A Alahapperuma, Maplewood, MN (US);
Anthony B Ferguson, Lake Elmo, MN (US);
David P Smith, Hudson, WI (US);
David L Tussey, New Richmond, WI (US);
Saurin J Shah, Woodbury, MN (US);
Dean E Sitz, Wahpeton, ND (US);
Randy S Bay, Wahpeton, ND (US);
Daniel C Egan, Oakdale, MN (US);
Wolfgang G Schoeppel, Neuss, DE;
Imation Corp., Oakdale, MN (US);
Abstract
The present invention provides a novel one-piece capstan for a tape cartridge which provides good static dissipative properties and wear resistance. The capstan material of the present invention has a charge decay time of no more than 5 seconds as measured according to Mil B-81705C standard. The capstan material also has a flexural modulus of at least 200,000 psi (1379 MPa). The capstan comprises a hard, dimensionally stable polymer and a static dissipating polymer. The capstan also has an improved structure and geometry which enables the part to be easily molded, reduces drive force requirements with a reduction of material from the prior art design, but with no significant loss of performance properties.