GB1290991A - - Google Patents
Info
- Publication number
- GB1290991A GB1290991A GB1290991DA GB1290991A GB 1290991 A GB1290991 A GB 1290991A GB 1290991D A GB1290991D A GB 1290991DA GB 1290991 A GB1290991 A GB 1290991A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- globule
- mercury
- switch
- april
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H29/00—Switches having at least one liquid contact
- H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
- H01H29/22—Switches having at least one liquid contact operated by tilting contact-liquid container wherein contact is made and broken between liquid and solid
Abstract
1290991 Thermal switches; fluid Contacts HONEYWELL Inc 19 April 1971 [23 April 1970] 22474/71 Heading H1N An electric switch comprising a globule 18, Fig. 3, of mercury movable in an envelope 12 by tilting, contains a projecting member 16 engageable with and depressing the surface of the globule 18 whereby surface tension produces a restoring force R acting in the direction to prevent the mercury from engaging a fixed contact 14 when the envelope 12 is slightly tilted (as shown), the contact 14 being engaged only when the envelope 12 is further tilted. The arrangement is such that both the switching on and switching off positions are reached without the envelope 12 reaching and passing over the horizontal position whereby only a small change in the position of the centre of gravity of the globule 18 and only a small differential for the switch is obtained. In a particular example the envelope is mounted on a bimetal spiral coil (20), Figs. 6, 7 (not shown) for use as a thermal switch. The arrangement is such that the mercury globule does not move across the central support for the coil (20) so that the thermal switch with a low differential is obtained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3124370A | 1970-04-23 | 1970-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1290991A true GB1290991A (en) | 1972-09-27 |
Family
ID=21858370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1290991D Expired GB1290991A (en) | 1970-04-23 | 1971-04-19 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3755643A (en) |
| JP (2) | JPS464223A (en) |
| CA (1) | CA925551A (en) |
| GB (1) | GB1290991A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3993882A (en) * | 1975-10-07 | 1976-11-23 | The Gordos Corporation | Micro-miniature mercury tilt-type inertia switch |
| US4201900A (en) * | 1979-02-26 | 1980-05-06 | Gordos Corporation | Snap action tilt actuated mercury switch |
| JPS5938085U (en) * | 1982-09-02 | 1984-03-10 | セーラー万年筆株式会社 | double-headed marking pen |
| US4606702A (en) * | 1985-01-10 | 1986-08-19 | Huber Reversible Fan, Inc. | Reversible fan with cylindrical resilient rubber spring |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2232626A (en) * | 1937-10-07 | 1941-02-18 | Minneapolis Honeyweil Regulato | Electric switch |
| US2830160A (en) * | 1953-07-17 | 1958-04-08 | Engel & Gibbs Ltd | Control switches |
| US3198919A (en) * | 1962-08-01 | 1965-08-03 | Bendix Corp | Mercury switch |
-
1946
- 1946-07-14 JP JP1884746A patent/JPS464223A/ja active Pending
-
1970
- 1970-04-23 US US00031243A patent/US3755643A/en not_active Expired - Lifetime
- 1970-12-08 CA CA100140A patent/CA925551A/en not_active Expired
-
1971
- 1971-03-31 JP JP1884771A patent/JPS5334317B1/ja active Pending
- 1971-04-19 GB GB1290991D patent/GB1290991A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS464223A (en) | 1971-11-11 |
| US3755643A (en) | 1973-08-28 |
| JPS5334317B1 (en) | 1978-09-20 |
| CA925551A (en) | 1973-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |