Transversely driven piston transducer
First Claim
Patent Images
1. A transducer having a longitudinal axis, comprising:
- a) at least one rigid, non-flexural piston mass member having a front radiating surface and a rear surface;
b) electromechanically active driver means exhibiting expansion and contraction in a plane perpendicular to said longitudinal axis;
c) said driver means and said position mass member being spaced from one another along said longitudinal axis;
d) connecting means including i) at least two lever arms having first and second ends, and ii) a coupling section, said connecting means coupling said driver means with said piston mass member and operable to translate movement of said driver means in said plane into a corresponding axial movement of said piston mass member;
e) said coupling section being disposed between said driver means and said first ends of said lever arms;
f) first hinge means for each said lever arm, having a pivot axis and connecting a first end of a respective lever arm to said coupling section;
g) second hinge means for each said lever arm, having a pivot axis and connecting a second end of a respective lever arm to said piston mass member;
h) said lever arms having a rigidity, and said hinge means being constructed and arranged such that during operation, said lever arms move with a uniform angular velocity about said pivot axis of either of said hinge means, and said radiating surface of said piston mass member moves with a uniform velocity distribution.
3 Assignments
0 Petitions
Accused Products
Abstract
A piston transducer having a central longitudinal axis and at least one piston member and an active transducer section displaced from one another along the longitudinal axis. Movement of the active transducer section is generally in a plane perpendicular to the longitudinal axis and a series of lever arms couple the movement of the active transducer section into a corresponding axial movement of the piston member and which axial movement is with a uniform velocity across the radiating surface thereof. For two-sided radiation, another piston member and series of levers may be connected to the active transducer section.
-
Citations
26 Claims
-
1. A transducer having a longitudinal axis, comprising:
-
a) at least one rigid, non-flexural piston mass member having a front radiating surface and a rear surface; b) electromechanically active driver means exhibiting expansion and contraction in a plane perpendicular to said longitudinal axis; c) said driver means and said position mass member being spaced from one another along said longitudinal axis; d) connecting means including i) at least two lever arms having first and second ends, and ii) a coupling section, said connecting means coupling said driver means with said piston mass member and operable to translate movement of said driver means in said plane into a corresponding axial movement of said piston mass member; e) said coupling section being disposed between said driver means and said first ends of said lever arms; f) first hinge means for each said lever arm, having a pivot axis and connecting a first end of a respective lever arm to said coupling section; g) second hinge means for each said lever arm, having a pivot axis and connecting a second end of a respective lever arm to said piston mass member; h) said lever arms having a rigidity, and said hinge means being constructed and arranged such that during operation, said lever arms move with a uniform angular velocity about said pivot axis of either of said hinge means, and said radiating surface of said piston mass member moves with a uniform velocity distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
14. A transducer having a longitudinal axis, comprising:
-
a) a rigid non-flexural piston mass member having a front radiating surface and a rear surface; b) electromechanically active driver means exhibiting expansion and contraction in a plane perpendicular to said longitudinal axis, said plane bisecting said driver means; c) said driver means and said piston mass member being spaced from one another along said longitudinal axis; d) connecting means coupling said driver means with said piston mass member and operable to translate movement of said driver means in said plane into a corresponding axial movement of said piston mass member; e) said connecting means being constructed and arranged such that during said axial movement of said piston mass member, said radiating surface moves with a uniform velocity distribution; f) an inertial mass member connected to said connecting means; g) said piston mass member and inertial mass member being on opposite sides of said plane. - View Dependent Claims (15, 16, 17, 18)
-
Specification