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US 6,484,726 B1Granted
Articulating earplug
Assignee3M Innovative Properties Company
InventorsDean M. Remer, Paul A. Martinson
Life of this patent
Estimating the term…
Abstract
A foam earplug that includes a first segment a second segment and a predetermined articulation zone disposed between the first segment and the second segment. The earplug exhibits an equilibrium bend force of no greater than about 10 g.
Claims31
A foam earplug comprising:
- a first segment;
- a second segment;
- and
- a predetermined articulation zone disposed between the first segment and the second segment such that the earplug exhibits an equilibrium bend force of no greater than about 10 g.
1 more element
A foam earplug that comprises:
- a first segment;
- a second segment;
- and
- a predetermined articulation zone disposed between the first segment and the second segment and adjacent the first segment and the second segment,
- the cross sectional area of the earplug taken at the articulation zone being no greater than about 80% of the cross sectional area of the earplug taken at the apex of the first segment and no greater than about 80% of the cross sectional area of the earplug taken at the apex of the second segment.
2 more elements
Dependencies are inferred from the claim text.