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:
Apr. 28, 1992
Filed:
Apr. 26, 1989
Walter Schmitt, Traunreut, DE;
Franz Ritz, Ubersee, DE;
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Abstract
An apparatus is provided for inductive transfer of the scanning signal from a sensing head to a machine body. The apparatus includes cooperating inductive coupling elements between a receiving lug of the sensing head and the spindle of the machine. Cooperating coupling elements for inductive coupling are also provided between the spindle and the machine body. The coupling element of the receiving lug includes a coil with a ferromagnetic core. The spindle includes a second cooperating coil lying opposite to the receiving-lug coil which also includes a ferromagnetic core. The scanning signal is conducted from the detector to the coil in the receiving lug and is transferred inductively to the spindle. The scanning signal then passes over a transfer coil to a receiving coil. The transfer coil and receiving coil are configured such that the signal is transferred independently of rotation of the spindle relative to the machine body.