GB502251A - Improvements in or relating to radio frequency tuning devices - Google Patents
Improvements in or relating to radio frequency tuning devicesInfo
- Publication number
- GB502251A GB502251A GB22787/37A GB2278737A GB502251A GB 502251 A GB502251 A GB 502251A GB 22787/37 A GB22787/37 A GB 22787/37A GB 2278737 A GB2278737 A GB 2278737A GB 502251 A GB502251 A GB 502251A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- radio frequency
- frequency tuning
- tuning devices
- cancelled
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
502,251. Variable resistances. MALLORY & CO., Inc., P. R. Aug. 9, 1937, No. 22787. Convention date, Aug. 8, 1936. [Classes 37 and 38 (i)] [Also in Groups XL, XVII, XXII, and XXXV] The Specification as open to inspection under Sect. 91 comprises the subject-matter described in Specification 504,014. , It also describes, in connection with a tuning inductance which gives a very open scale, an arrangement wherein the scale is spiral as at 317, Fig. 30 (Cancelled). A window 311 is moved to the right-hand part of the rotary dial 298 by a frame 308, 303, Fig. 21 (Cancelled), which engages, by means of a shoe 304, a spiral guide 300 at the back of the dial. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US94928A US2163646A (en) | 1936-08-08 | 1936-08-08 | Tuning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB502251A true GB502251A (en) | 1939-03-09 |
Family
ID=22247977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22787/37A Expired GB502251A (en) | 1936-08-08 | 1937-08-09 | Improvements in or relating to radio frequency tuning devices |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2163646A (en) |
| GB (1) | GB502251A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE970231C (en) * | 1939-10-16 | 1958-08-28 | Philips Nv | Broadcast radio with spread spectrum in one or more shortwave bands |
| DE970584C (en) * | 1940-09-01 | 1958-10-09 | Georg Von Schaub | Tuning arrangement with band spreading for several shortwave bands |
| DE974133C (en) * | 1943-06-08 | 1960-09-22 | Georg Von Dipl-Ing Schaub | Inductive tuning arrangement with core displacement |
| US2464557A (en) * | 1944-12-30 | 1949-03-15 | Philco Corp | Band switching arrangement for high-frequency circuits |
| US2554230A (en) * | 1945-11-20 | 1951-05-22 | Gen Electric | Combined converter and oscillator circuit |
| US2475638A (en) * | 1946-09-28 | 1949-07-12 | Gen Electric | Tuning circuit for high-frequency receivers |
| US2926240A (en) * | 1954-09-07 | 1960-02-23 | Cgs Lab Inc | Radio control apparatus |
-
1936
- 1936-08-08 US US94928A patent/US2163646A/en not_active Expired - Lifetime
-
1937
- 1937-08-09 GB GB22787/37A patent/GB502251A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2163646A (en) | 1939-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB502251A (en) | Improvements in or relating to radio frequency tuning devices | |
| US2078031A (en) | Dial mechanism | |
| GB444780A (en) | Improvements in or relating to adjusting and indicating means for electric variable condensers | |
| GB372565A (en) | Improvements in or relating to wireless tuning coils | |
| GB445646A (en) | Convertible table | |
| GB414937A (en) | Improvements in and relating to shutter devices for wireless tuning dials | |
| GB444329A (en) | Improvements in and relating to indicating devices more particularly for use with radio receiving apparatus | |
| GB471796A (en) | Improvements relating to radio receivers | |
| GB525405A (en) | Tuning device for radio receivers | |
| GB471507A (en) | Variable inductance tuning device | |
| GB243718A (en) | Adjusting scale for receiving sets | |
| FR847592A (en) | Radio receiver with automatic fine tuning and push-button tuning control | |
| GB457217A (en) | Improvements in or relating to remote control for radio receivers | |
| GB509414A (en) | Improvements in or relating to tuning indicators for wireless receivers | |
| GB371967A (en) | Improvements relating to apparatus for screening thermionic valves and the like | |
| GB533315A (en) | Improvements in or relating to wireless receiving sets | |
| AU274037A (en) | Radio tuning dial | |
| CA355922A (en) | Radio tuning control | |
| CA340926A (en) | Radio tuning indicator | |
| CA348351A (en) | Radio tuning mechanism | |
| GB352427A (en) | An improved tuning device for wireless apparatus | |
| GB470597A (en) | Tuning indicator for radio receivers and the like | |
| GB253537A (en) | Vaginal speculum | |
| GB527967A (en) | Television apparatus | |
| CA341353A (en) | Radio testing oscillator |