Echo annexation device

• US 4,112,396 A
• Filed: 02/02/1976
• Issued: 09/05/1978
• Est. Priority Date: 02/17/1975
• Status: Expired due to Term

• Current Assignee: Chuzo Honda
• Original Assignee: Chuzo Honda
• Inventors: Honda, Chuzo
• Primary Examiner(s): Smith, Alfred E.
• Assistant Examiner(s): Nussbaum, Marvin
• Application Number:
  US05/654,715
• Time in Patent Office: 946 Days
• Field of Search: 333/30 R, 333/30 M, 333/71, 333/29, 84/1.1, 84/1.04, 84/1.06, 84/1.14, 84/1.15, 84/1.2, 84/1.25, 84/DIG. 26, 179/1 J, 310/26, 310/36
• US Class Current: 333/145
• CPC Class Codes: G10K 15/10 using time-delay networks comprising electromechanical or electro-acoustic devices
• CPC Class Codes: H03H 9/30 Time-delay networks
• CPC Class Codes: Y10S 84/26 Reverberation

Abstract

The present invention is related to devices for annexing an echo resembling natural reverberation in the course of sound recording, in which a line or lines of coil spring with a portion or portions protruded axially at a right angle are spanned between the drive-transducer and the pickup-transducer.

Claims

1. An echo annexation device for use in an apparatus having a drive-transducer and a pickup-transducer, said device comprising:

a continuous helically coiled spring helically wound about a central axis and connected between said drive-transducer and said pickup-transducer, said coiled spring being comprised of a plurality of equal diameter helical first coil segments coaxially aligned with each other and said central axis through said spring; and

at least one second coil segment between two of said first coil segments, said second coil segment being a helical loop with a diameter greater than the diameter of said first coil segments and wound in the same direction as said first coil segments about said central axis, said helical loop having a tip portion, and said tip portion being bent downwardly at an angle toward said central axis.

2. An echo annexation device for use in an apparatus having a drive-transducer and a pickup-transducer, said device comprising:

a continuous helically coiled spring helically wound about a central axis and connected between said drive-transducer and said pickup-transducer, said coiled spring being comprised of a plurality of equal diameter helical first coil segments coaxially aligned with each other and said central axis through said spring; and

at least one second coil segment between two of said first coil segments, said second coil segment being a helical loop with a diameter greater than the diameter of said first coil segments and would in the same direction as said first coil segments about said central axis, said helical loop having a tip portion, and said tip portion having a loop therein.

3. An echo annexation device for use in an apparatus having a drive-transducer and a pickup-transducer, said device comprising:

a continuous helically coiled spring helically would about a central axis and connected between said drive-transducer and said pickup-transducer, said coiled spring being comprised of a plurality of equal diameter helical first coil segments coaxially aligned with each other and said central axis through said spring; and

at least one second coil segment between two of said first coil segments, said second coil segment being a helical loop with a diameter greater than the diameter of said first coil segments and wound in the same direction as said first coil segments about said central axis, said helical loop having a tip portion, and said tip portion having a loop therein, the central axis of said tip loop being at a right angle to said central axis of said coiled spring.

4. An echo annexation device for use in an apparatus having a drive-transducer and a pickup-transducer, said device comprising:

a continuous helically coiled spring helically wound about a central axis and connected between said drive-transducer and said pickup-transducer, said coiled spring being comprised of a plurality of equal diameter helical first coil segments coaxially aligned with each other and said central axis through said spring; and

at least one second coil segment between two of said first coil segments, said second coil segment being a helical loop with a diameter greater than the diameter of said first coil segments and wound in the same direction as said first coil segments about said central axis, said helical loop having a plurality of helical loops wound about a second central axis, said second central axis being parallel to said central axis through said first coil segment.

5. An echo annexation device for use in an apparatus having a drive-transducer and a pickup-transducer, said device comprising:

a continuous helically coiled spring helically wound about a central axis and connected between said drive-transducer and said pickup-transducer, said coiled spring being comprised of a plurality of equal diameter helical first coil segments coaxially aligned with each other and said central axis through said spring; and

at least one second coil segment between two of said first coil segments, said second coil segment extending between said first coil segments in a line approximately parallel to said central axis of said coiled spring.

6. A device as claimed in claim 5, wherein said second coil segment has a U-shaped bent portion therein.

7. A device as claimed in claim 5, wherein said second coil segment has a V-shaped bent portion therein.

8. An echo annexation device for use in an apparatus having a drive-transducer and a pickup-transducer, said device comprising:

a continuous helically coiled spring helically wound about a central axis and connected between said drive-transducer and said pickup-transducer, said coiled spring being comprised of a plurality of equal diameter helical first coil segments coaxially aligned with each other and said central axis through said spring; and

a plurality of second coil segments between pairs of said first coil segments along the length of said coiled spring.

9. A device as claimed in claim 8, wherein each of said second coil segments is a helical loop, wound in the same direction as said first coil segments about said central axis, each helical loop having a diameter greater than the diameter of each first coil segment.

10. A device as claimed in claim 8, wherein each of said second coil segments extends between said pairs of first coil segments in a line approximately parallel to said central axis of said coiled spring.