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US 10,760,539 B2Granted
Tunable injection molded resonator
AssigneeRL Hudson & Company
InventorBenny R. Foreman
Life of this patent
Estimating the term…
Abstract
A method including providing a mold cavity to produce an outer contour of an acoustic resonator and providing a mold core to produce an inner contour of the resonator. The inner contour corresponds to a plenum, and a connecting channel in fluid communication with the plenum. An insert fitting adjacent to the mold core defines a length of the connecting channel during injection molding of the resonator.
Claims8
A method comprising:
- providing a mold cavity to produce an outer contour of an acoustic resonator;
- providing a mold core to produce an inner contour of the resonator, the inner contour corresponding to a plenum, and a connecting channel in fluid communication with the plenum;
- providing an insert adjacent to the mold core and interposing the mold core and the mold cavity that, during injection molding of the resonator, defines a length of the connecting channel;
- injection molding the acoustic resonator using the mold cavity, mold core, and insert such that the acoustic resonator is partially defined by a space between the mold core and mold cavity and partially defined by a second space between the mold cavity and the insert and
- placing a quantity of potting compound into the plenum to alter its volume.
2 more elements
A method comprising;
- providing a mold cavity, a mold core, and a mold insert that together define a part impression corresponding an integrated acoustic resonator, the integrated acoustic resonator having:
- a portion of an air intake;
- a plenum;
- and
- a connecting channel in fluid communication with portion of the connecting channel and the plenum;
- and
- injection molding the integrated acoustic resonator with the mold insert adjacent to the mold core and interposing the mold cavity and the mold core to define a length and location of the connecting channel;
- wherein a resonant frequency of the integrated acoustic resonator is selected by adjusting a length of the mold insert corresponding to the length of the connecting channel;
- and
- during injection molding, the resonator is partially formed in a space between the mold cavity and mold core and partially formed in a space between the mold insert and the mold cavity.
7 more elements
A method comprising:
- injection molding a plenum of an integrated resonator between a mold cavity and a mold core;
- injection molding a portion of an air intake path between the mold cavity and the mold core as a component of the integrated resonator;
- injection molding a connecting channel between the mold cavity and a mold insert adjacent to the mold core, as a component of the integrated resonator, the connecting channel providing fluid communication between the plenum and the air intake portion;
- and
- placing a quantity of filler into the plenum such that the volume of the plenum is reduced by the filler.
2 more elements
Dependencies are inferred from the claim text.