Pressure ring for ear cover
First Claim
1. A pressure ring for an ear cover, earmuff, or the like, wberein the ear cover includes a sealing ring to be applied against a wearer'"'"'s head around the ear, the pressure ring being disposed behind and outside the sealing ring;
- the pressure ring having a base surface on a side thereof outward of the sealing ring;
the pressure ring including an arched contact surface for disposal behind the sealing ring, the contact surface being shaped for effecting substantially tight contact against the wearer'"'"'s head around the ear, the pressure ring having an outer edge toward an outer periphery thereof and an inner edge defining an inner periphery of the ring, the contact surface of the pressure ring having different height levels above the base surface of the pressure ring between the inner edge and the outer edge of the pressure ring.
1 Assignment
0 Petitions
Accused Products
Abstract
A pressure ring for an earmuff, an earphone, or the like, wherein the earmuff, or the like, includes a sealing ring which is applied against the head of the wearer around the ears and the pressure ring is behind and applies pressure to the sealing ring at the top, contact surface of the pressure ring. The contact surface is taller above the base surface of the pressure ring at the peripheral outer edge of the pressure ring than at the peripheral inner edge of the pressure ring so that the sealing ring is concave and the surface of the ear cover over the ear is concave. At least the peripheral outer edge of the contact surface varies in height between the taller upper and lower ends of the pressure ring, on the one hand, and the central region of the pressure ring, on the other hand. At least one groove channel wraps at least partially around the pressure ring and extends into the pressure ring from the contact surface. Barriers in the channel block the channel from extending completely around the pressure ring. Openings communicate between adjacent concentric grooves of the channel. The barriers and openings are placed to define short-length sound traps in the channel.
121 Citations
20 Claims
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1. A pressure ring for an ear cover, earmuff, or the like, wberein the ear cover includes a sealing ring to be applied against a wearer'"'"'s head around the ear, the pressure ring being disposed behind and outside the sealing ring;
the pressure ring having a base surface on a side thereof outward of the sealing ring;
the pressure ring including an arched contact surface for disposal behind the sealing ring, the contact surface being shaped for effecting substantially tight contact against the wearer'"'"'s head around the ear, the pressure ring having an outer edge toward an outer periphery thereof and an inner edge defining an inner periphery of the ring, the contact surface of the pressure ring having different height levels above the base surface of the pressure ring between the inner edge and the outer edge of the pressure ring.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A pressure ring for an ear cover, earmuff, or the like, wherein the ear cover includes a sealing ring to be applied against a wearer'"'"'s head around the ear, the pressure ring being disposed behind and outside the sealing ring;
the pressure ring having a base surface on a side thereof outward of the sealing ring;
the pressure ring including an arched contact surface for disposal behind the sealing ring, the contact surface being shaped for effecting substantially tight contact against the wearer'"'"'s head around the ear, the pressure ring having an outer edge toward an outer periphery thereof and an inner edge defining an inner periphery of the ring, between the outer edge and the inner edge of the pressure ring, at least one channel extends from inside of the pressure ring facing the sealing ring toward an outside of the pressure ring at the base surface and extends along at least a substantial portion of the circumferential length of the pressure ring.- View Dependent Claims (20)
Specification