Patent ID: 9706290
Date: 2017-07-11
CPC Classifications: H04R

Claim:
1. An acoustic pass valve for use in a speaker, the valve comprising: a motor having a coil assembly and a magnetic system; an armature extending through or being located adjacent to the coil assembly and the magnetic system; a membrane having a main portion in which a hole is formed, and a moveable valve flap that, in a closed position, abuts a top face of the main portion and completely covers the hole; a drive pin having a first end and a second end, the first end of the drive pin being coupled to the armature and the second end being coupled to the valve flap of the membrane, the valve flap to be actuated by the drive pin into i) an open position in which the hole is uncovered by the flap, in response to a first motion of the armature, and ii) the closed position, in response to a second motion of the armature; a valve housing containing the motor, the armature, the drive pin, and the membrane; a first spout coupled to or formed on the housing, wherein the first spout is open to a first space inside the housing that is open to a top face of the membrane; and a second spout coupled to or formed on the housing, wherein the second spout is open to a second space inside the housing that is open to a bottom face of the membrane.