Microphone and speaker structure for miniature receiver and transmitter

• US 3,306,990 A
• Filed: 01/13/1964
• Issued: 02/28/1967
• Est. Priority Date: 01/13/1964
• Status: Expired due to Term

• Current Assignee: Robert H. Walker
• Original Assignee: Robert H. Walker
• Inventors: Walker, Robert H.
• Application Number:
  US04/337,348
• Time in Patent Office: 1,142 Days
• US Class Current: 381/365
• CPC Class Codes: H04B 1/3833 Hand-held transceivers
• CPC Class Codes: H04R 1/023 Screens for loudspeakers

Claims

1. APPARATUS FOR TRANSLATING SOUND INTO ELECTRICAL SIGNALS AND FOR TRANSLATING ELECTRICAL SIGNALS INTO SOUND INCLUDING IN COMBINATION, HOUSING MEANS HAVING AN APERTURED WALL, A SPEAKER INCLUDING A CONE AND A MAGNET MOUNTED WITHIN SAID HOUSING MEANS WITH SAID CONE POSITIONED ADJACENT SAID WALL, A MICROPHONE HAVING A MAGNETIC STRUCTURE MOUNTED ON SAID WALL BETWEEN SAID SPEAKER CONE AND SAID WALL, RESILIENT MATERIAL MEANS SPACING ONE SURFACE OF SAID MICROPHONE FROM SAID WALL AND SUBSTANTIALLY SURROUNDING THE REMAINING SURFACES OF SAID MICROPHONE, AND A COVER PLATE OF MAGNETIC MATERIAL SUPPORTING SAID MICROPHONE AND FASTENED TO SAID WALL, SAID COVER PLATE COOPERATING WITH SAID RESILIENT MATERIAL MEANS AND SAID MICROPHONE TO MECHANICALLY SUPPORT SAID MICROPHONE, TO ACOUSTICALLY INSULATE SAID MICROPHONE FROM