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PCE
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DIFF Subgroup
G11B 3/20

by elastic means, e.g. spring (G11B3/28 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: by elastic means, e.g. spring

CPC: by elastic means, e.g. spring (G11B3/28 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor > Arrangements of heads > Arranging, supporting, or driving of heads or of transducers relatively to record carriers > Supporting in balanced, counterbalanced, or loaded operative position, e.g. loading in direction of traverse > by elastic means, e.g. spring

CPC:

Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor (G11B11/00, take precedence) > Arrangements of heads > Arranging, supporting, or driving of heads or of transducers relatively to record carriers > Supporting in balanced, counterbalanced or loaded operative position , e.g. loading in direction of traverse > by elastic means, e.g. spring (G11B3/28 takes precedence)

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • G11B 3/22 adjustable IPC+CPC Available in IPC and CPC
  • G11B 3/24 acting to decrease pressure on record IPC+CPC Available in IPC and CPC
  • G11B 3/26 acting to increase pressure on record IPC+CPC Available in IPC and CPC