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US 4,316,271 AGranted
Purging and expansion mechanism
AssigneeHoneywell Inc.
InventorDonald A. Evert
Life of this patent
Estimating the term…
Abstract
A housing for an electroacoustic transducer includes a filling or access port for introducing an inert liquid into the chamber defined by the housing. The access port includes a bubble trap and a vent for extracting gaseous bubbles from the fluid fill. The structure of the access port also comprises a substantially zero spring pressure expansion cavity for the fluid.
Claims6
A housing structure for an electroacoustic transducer comprising:
- a main housing body portion defining a chamber in which the transducer is mounted;
- said body portion having a wall member;
- an access port in said wall member through which fluid fill may be admitted to said chamber and through which gases in said chamber may be purged;
- said access port including means defining a bubble trap cavity and a plunger means having a selectively opened bleed hole.
1 more element
Dependencies are inferred from the claim text.