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US 5,630,283 AGranted
Linear or angular encoder
AssigneeDr. Johannes Heidenhain GmbH
InventorGunther Nelle
Life of this patent
Estimating the term…
Abstract
An encoder including a measuring standard, a scanner for scanning the grating of the measuring standard, a measuring standard carrier having a groove for receiving the measuring standard, a relatively thin glue layer provided between one of the opposite surfaces of the groove and the measuring standard, and at least one spring element provided between another of the opposite surfaces of the groove and the measuring standard.
Claims7
An encoder, comprising:
- a measuring standard having a grating;
- a scanner for scanning the grating;
- a measuring standard carrier having a groove for receiving said measuring standard, said groove having two opposite surfaces between which said measuring standard is received;
- a relatively thin glue layer provided between one of the two opposite surfaces of said groove and said measuring standard;
- and
- at least one spring element provided between another of the two opposite surfaces of said groove and said measuring standard for retaining said measuring standard in said groove with a possibility of thermal elongation of said measuring standard in a measuring direction substantially independent of said carrier,
- wherein said at least one spring element comprises a continuous section of a spring steel sheet.
4 more elements
Dependencies are inferred from the claim text.