Loudspeaker diaphragm and method of manufacture thereof
AssigneeGoodman's Loudspeakers Limited
InventorsNicholas Pocock, Simon Yorick Pettman
Life of this patent
Estimating the term…
Abstract
A method of manufacturing a loudspeaker diaphragm comprising moulding it from a flowable polyolefin or other plastics material such that part of the material flows during moulding a distance equal to at least 300 times the thickness of that part of material after moulding, the moulded material having a Youngs Modulus of at least 2000 MPa.
Claims12
A method of manufacturing a loudspeaker diaphragm comprising moulding it from a flowable plastics material such that part of the material flows within the mould during moulding a distance equal to at least 300 times the thickness of that part of material after moulding, the moulded material having a Youngs Modulus of at least 1500 MPa.
A loudspeaker diaphragm moulded from flowable plastics material having a Youngs Modulus of at least 1500 MPa, a part of the cone having a flow length/thickness ratio (as herein defined) of at least 300.
Dependencies are inferred from the claim text.