FR2377680A1 - Stationary microphonograph record disc - has sound grooves in plastics sheet with V-shaped location on one surface for registration pin - Google Patents

Stationary microphonograph record disc - has sound grooves in plastics sheet with V-shaped location on one surface for registration pin

Info

Publication number
FR2377680A1
FR2377680A1 FR7701220A FR7701220A FR2377680A1 FR 2377680 A1 FR2377680 A1 FR 2377680A1 FR 7701220 A FR7701220 A FR 7701220A FR 7701220 A FR7701220 A FR 7701220A FR 2377680 A1 FR2377680 A1 FR 2377680A1
Authority
FR
France
Prior art keywords
sound grooves
sheet
locating means
shaped locating
stationary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7701220A
Other languages
French (fr)
Other versions
FR2377680B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MICROSONICS CORP
Original Assignee
MICROSONICS CORP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MICROSONICS CORP filed Critical MICROSONICS CORP
Priority to FR7701220A priority Critical patent/FR2377680A1/en
Publication of FR2377680A1 publication Critical patent/FR2377680A1/en
Application granted granted Critical
Publication of FR2377680B1 publication Critical patent/FR2377680B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/34—Guiding record carriers during transducing operation, e.g. for track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/001—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor with vibrating mechanical coupling means between pick-up element and sound producing element
    • G11B3/002—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor with vibrating mechanical coupling means between pick-up element and sound producing element element with stationary record carriers

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

Stationary record with sound grooves on a sheet of plastic material, has a generally V-shaped locating means formed on one surface of the sheet of material and is accessible to a registration pin from the same side. The V-shaped locating means comprise a recess lying in a plane generally parallel to the plane of the sheet of material. The V-shaped locating means further comprises ribs extending above the sound grooves carried by the sheet of material being located on the same surface as the V-shaped locating means. The sound grooves are arranged in a generally spiral pattern, the pattern of the sound grooves having proximate their center a point which lies in close proximity to the apex of the V-shaped locating means.
FR7701220A 1977-01-17 1977-01-17 Stationary microphonograph record disc - has sound grooves in plastics sheet with V-shaped location on one surface for registration pin Granted FR2377680A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7701220A FR2377680A1 (en) 1977-01-17 1977-01-17 Stationary microphonograph record disc - has sound grooves in plastics sheet with V-shaped location on one surface for registration pin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7701220A FR2377680A1 (en) 1977-01-17 1977-01-17 Stationary microphonograph record disc - has sound grooves in plastics sheet with V-shaped location on one surface for registration pin

Publications (2)

Publication Number Publication Date
FR2377680A1 true FR2377680A1 (en) 1978-08-11
FR2377680B1 FR2377680B1 (en) 1983-09-02

Family

ID=9185562

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7701220A Granted FR2377680A1 (en) 1977-01-17 1977-01-17 Stationary microphonograph record disc - has sound grooves in plastics sheet with V-shaped location on one surface for registration pin

Country Status (1)

Country Link
FR (1) FR2377680A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883146A (en) * 1973-04-04 1975-05-13 Education Eng Associates Hand-held playback device, system and method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883146A (en) * 1973-04-04 1975-05-13 Education Eng Associates Hand-held playback device, system and method

Also Published As

Publication number Publication date
FR2377680B1 (en) 1983-09-02

Similar Documents

Publication Publication Date Title
USD244790S (en) Field hockey stick
NL7702576A (en) MAGNETIC RECORDING MATERIAL AND PROCESS FOR MANUFACTURE THEREOF.
JPS5313272A (en) Precision planar moving plate
ES489572A0 (en) IMPROVEMENTS IN CONTROLLED GAIN AMPLIFIERS FOR SIGNALS WITH FREQUENCIES OVER 1 MHZ.
GB1240962A (en) Improvements in or relating to rotary die cutting machines
USD245436S (en) Maze game board, or similar article
NL7712122A (en) SHEET MATERIAL WITH FLAT SURFACE.
IT1086763B (en) Stationary microphonograph record disc - has sound grooves in plastics sheet with V-shaped location on one surface for registration pin
FR2377680A1 (en) Stationary microphonograph record disc - has sound grooves in plastics sheet with V-shaped location on one surface for registration pin
IT1083458B (en) PIGMENTED PLASTIC MATERIALS BASED ON ABS POLYMERS AND POLYAMIDS
USD246227S (en) Shipping drum or the like
IT7830235A0 (en) SHEET MATERIAL WITH THE CHARACTERISTICS OF SUEDE LEATHER AND PROCEDURE FOR ITS PRODUCTION.
USD246059S (en) Game target
FR2459013B1 (en) PROCESS FOR PRODUCING PATTERN BINDING LINES ON HAIR FABRICS, AND THE SAME
USD252751S (en) Capstan
BE846134A (en) ELECTROINSULATING MATERIAL BASED ON OLEFIN POLYMERS
USD247902S (en) Ice shaving machine
USD244448S (en) Arrow point
FR2351705A1 (en) SHREDDER, ESPECIALLY FOR PLASTICS
USD260522S (en) Multi-J antenna
USD266481S (en) Slider holder
BE842396A (en) PROCESS FOR THE MANUFACTURING OF MOLDED PARTS BASED ON OLEFIN POLYMERS
USD255115S (en) Turntable
USD249478S (en) Drawing guide for music
USD257703S (en) Slide key holder

Legal Events

Date Code Title Description
ST Notification of lapse