Combined instrument and transducer motor cavities for acoustic instrument

• US 3,257,516 A
• Filed: 06/25/1962
• Issued: 06/21/1966
• Est. Priority Date: 06/25/1962
• Status: Expired due to Term

• Current Assignee: Shaler Knowles Hugh
• Original Assignee: Shaler Knowles Hugh
• Inventors: SHALER KNOWLES HUGH
• Application Number:
  US04/204,942
• Time in Patent Office: 1,457 Days
• US Class Current: 381/345
• CPC Class Codes: H04R 2460/11 Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion
• CPC Class Codes: H04R 25/456 mechanically
• CPC Class Codes: H04R 25/48 using constructional means for obtaining a desired frequency response H04R25/652 takes precedence
• CPC Class Codes: H04R 25/60 Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles ear wax retarders, e.g. mounting thereof H04R25/654
• CPC Class Codes: H04R 25/604 of acoustic or vibrational transducers

Claims

1. IN COMBINATION WITH A HOUSING HAVING A SUBSTANTIALLY SEALED CAVITY HAVING A SOUND PORT THROUGH THE HOUSING, AN ELECTROACOUSTIC TRANSDUCER ASSEMBLY MOVABLY DISPOSED IN SAID CAVITY SO AS TO FORM AN INTERSPACE THEREAROUND, SAID TRANSDUCER ASSEMBLY COMPRISING A DIAPHRAGM, A WALL SUBSTANTIALLY SEALED TO THE PERIPHERY OF THE DIAPHRAGM TO FORM A FRONT CAVITY ON ONE SIDE THEREOF, A MOTOR MOUNTED ON THE OTHER SIDE OF THE DIAPHRAGM AND DRIVINGLY CONNECTED THERETO, THE SPACE OCCUPIED BY THE MOTOR BEING IN COMMUNICATION WITH THE SEALED CAVITY OF THE HOUSING, A SOUND PORT INTO THE FRONT CAVITY OF THE TRANSDUCER ASSEMBLY, A DUCT CONNECTING THE SOUND PORTS OF THE HOUSING AND THE FRONT CAVITY TO EACH OTHER;

AND FLEXIBLE MEANS DISPOSED IN THE INTERSPACE FOR MAINTAINING THE CAVITY OF THE HOUSING AT A SUBSTANTIALLY CONSTANT VOLUME DURING MOVEMENTS OF THE TRANSDUCER ASSEMBLY RELATIVE TO THE WALLS OF THE CAVITY.

36. AN ISOLATOR COMPRISING A SLEEVE, A SHOCK MOUNT DISPOSED AROUND THE SLEEVE, AN INTERNAL DUCT EXTENDING ALONG THE INSIDE OF THE SHOCK MOUNT, AND AN OPENING INTO THE DUCT THROUGH THE WALL OF THE SLEEVE NEAR ONE END OF THE SHOCK MOUNT AND AN EXTERNAL OPENING INTO THE DUCT NEAR THE OTHER END OF THE SHOCK MOUNT.