FR843874A - Improvements to the automatic tuning mechanisms of radio receivers - Google Patents

Improvements to the automatic tuning mechanisms of radio receivers

Info

Publication number: FR843874A
Authority: FR; France
Prior art keywords: radio receivers; automatic tuning; tuning mechanisms; mechanisms; automatic
Prior art date: 1937-09-24
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.): Expired

Application number

Other languages

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.)

RCA Corp

Original Assignee

RCA Corp

Radio Corporation of America

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.)

1937-09-24

Filing date

1938-09-24

Publication date

1939-07-12

1938-09-24 Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp

1939-07-12 Application granted granted Critical

1939-07-12 Publication of FR843874A publication Critical patent/FR843874A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/04—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
- H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings

FR843874D 1937-09-24 1938-09-24 Improvements to the automatic tuning mechanisms of radio receivers Expired FR843874A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US165469A US2244678A (en)	1937-09-24	1937-09-24	Automatic tuning mechanism

Publications (1)

Publication Number	Publication Date
FR843874A true FR843874A (en)	1939-07-12

Family

ID=22599021

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR843874D Expired FR843874A (en)	1937-09-24	1938-09-24	Improvements to the automatic tuning mechanisms of radio receivers

Country Status (2)

Country	Link
US (1)	US2244678A (en)
FR (1)	FR843874A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3212343A (en) *	1964-06-25	1965-10-19	Motorola Inc	Tuning apparatus

1937
- 1937-09-24 US US165469A patent/US2244678A/en not_active Expired - Lifetime
1938
- 1938-09-24 FR FR843874D patent/FR843874A/en not_active Expired

Also Published As

Publication number	Publication date
US2244678A (en)	1941-06-10

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