GB678511A - Improvements in and relating to electric resistances - Google Patents
Improvements in and relating to electric resistancesInfo
- Publication number
- GB678511A GB678511A GB6676/49A GB667649A GB678511A GB 678511 A GB678511 A GB 678511A GB 6676/49 A GB6676/49 A GB 6676/49A GB 667649 A GB667649 A GB 667649A GB 678511 A GB678511 A GB 678511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- housing
- recess
- sleeve
- contact
- stud
- 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
- 239000012212 insulator Substances 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 2
- 229910000906 Bronze Inorganic materials 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 239000010974 bronze Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000012777 electrically insulating material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
- Details Of Resistors (AREA)
Abstract
678,511. Cooling resistances; variablecontact resistances. BRITISH ELECTRIC RESISTANCE CO., Ltd., and NEWNHAM, L. A. June 12, 1950 [March 11, 1949], No. 6676/49. Class 37. A resistance element is mounted in a metalwalled housing which is adapted to be sealed and a very thin packing of electrically insulating material is arranged between the element and the wall of the housing and in close contact therewith so that heat generated in the element passes freely to the wall of the housing, by which it is dissipated. The housing 12 has a cylindrical wall 13 which is inclined outwards at 14 and terminates in an annular collar 15. The bottom 16 is formed with an annular recess 17 having a central aperture. Within the housing 12 is a moulding 18 of insulating plastic or ceramic material which has a recess 21 in its outer surface extending round the major part of the periphery. A spindle 22 rotatable within a sleeve 23 has an insulating member 24 moulded on to its upper end. The sleeve 23 is formed with an annular projection 26 fitting into the recess 17 and is threaded at each end to take locking-nuts 27, 28. A spring washer 29 is fitted between the member 24 and the end of the sleeve 23. In contact with the internal surface of the cylindrical wall 13 are mica strips 33, between which and the moulding 18 is wedged an arcuate strip 34 of resistance material, its lower portion being housed in the recess 21. The member 24 has secured to it by screws 32 a sliding contact 30 and a spring contact 31 made from a single piece of resilient phosphor bronze. A cap 41 is fitted over the housing 12 and spun down against the inclined portion 14, a rubber gasket 40 forming a hermetic seal. The cap carries three terminals, each of which comprises a screwed metal stud 44 passing through a rubber insulator 45, a conical insulator 46, and a ceramic disc 47. Each stud is held in position by a nut 48 under which is a terminal tag 49. The spring contact 31 engages the centre stud 44, the other studs being connected to the ends of the resistor by leads 36. The outer surface of the housing may have a matt surface, corrugations, or fins for dissipating heat.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6676/49A GB678511A (en) | 1949-03-11 | 1949-03-11 | Improvements in and relating to electric resistances |
| US182679A US2596503A (en) | 1949-03-11 | 1950-09-01 | Electric resistance apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6676/49A GB678511A (en) | 1949-03-11 | 1949-03-11 | Improvements in and relating to electric resistances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB678511A true GB678511A (en) | 1952-09-03 |
Family
ID=9818771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6676/49A Expired GB678511A (en) | 1949-03-11 | 1949-03-11 | Improvements in and relating to electric resistances |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2596503A (en) |
| GB (1) | GB678511A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2998587A (en) * | 1953-04-30 | 1961-08-29 | Bourns Inc | Linear motion variable resistor |
| US3271721A (en) * | 1956-05-10 | 1966-09-06 | Beckman Instruments Inc | Rectilinear potentiometer |
| US2938186A (en) * | 1956-10-30 | 1960-05-24 | Yucaipa Instr Ltd Inc | Trimming potentiometer |
| US2917721A (en) * | 1958-01-16 | 1959-12-15 | Chicago Telephone Supply Corp | Hermetically sealed variable resistor |
| US2926322A (en) * | 1958-03-28 | 1960-02-23 | Guggenheim S Frederic | Self-locking adjustable potentiometer |
| US2976507A (en) * | 1958-07-28 | 1961-03-21 | Cts Corp | Adjustable resistor |
| US3115614A (en) * | 1960-03-18 | 1963-12-24 | Beckman Instruments Inc | Miniature potentiometer with stop mechanism |
| NL252700A (en) * | 1960-03-18 | |||
| US3082393A (en) * | 1960-05-27 | 1963-03-19 | Packard Bell Electronics Corp | Television tuner |
| US3169237A (en) * | 1963-01-04 | 1965-02-09 | Mclvin A Thom | Electrical resistor device |
| US3735061A (en) * | 1971-12-16 | 1973-05-22 | Carter Precision Electric Co | Electrical switch assembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2059813A (en) * | 1933-05-15 | 1936-11-03 | Chicago Telephone Supply Co | Rheostat mounting |
| US2213078A (en) * | 1937-05-27 | 1940-08-27 | Globe Union Inc | Variable resistance and method of making same |
| US2266188A (en) * | 1939-10-07 | 1941-12-16 | Int Resistance Co | Rheostat construction |
| US2333477A (en) * | 1941-06-21 | 1943-11-02 | Us Rubber Co | Electrical variable resistor |
-
1949
- 1949-03-11 GB GB6676/49A patent/GB678511A/en not_active Expired
-
1950
- 1950-09-01 US US182679A patent/US2596503A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2596503A (en) | 1952-05-13 |
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