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.

Date of Patent:
Aug. 02, 2005

Filed:

Aug. 12, 2003
Applicants:

Paul C Coffin, Fort Collins, CO (US);

Richard Lynn Gardner, Jr., Greeley, CO (US);

Inventors:

Paul C Coffin, Fort Collins, CO (US);

Richard Lynn Gardner, Jr., Greeley, CO (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B021/08 ;
U.S. Cl.
CPC ...
Abstract

Apparatus for controlling the position of a plunge mechanism which is mounted to a cartridge engaging assembly is disclosed herein. The apparatus may be embodied in a cartridge engaging assembly having a plunge mechanism that is moveable between a retracted position and an extended position. The plunge mechanism is provided with a reference mark that moves with the plunge mechanism. A detector is mounted to the cartridge engaging assembly, wherein the detector senses an image of the reference mark and produces an output signal related thereto. A control system is operatively associated with the detector and is responsive to the output signal produced thereby. The control system is also operatively associated with the plunge mechanism so that it regulates the position of the plunge mechanism based on the output signal.


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