CA1042509A - Means for calibrating pressure switches at extra-low pressure settings - Google Patents
Means for calibrating pressure switches at extra-low pressure settingsInfo
- Publication number
- CA1042509A CA1042509A CA210,980A CA210980A CA1042509A CA 1042509 A CA1042509 A CA 1042509A CA 210980 A CA210980 A CA 210980A CA 1042509 A CA1042509 A CA 1042509A
- Authority
- CA
- Canada
- Prior art keywords
- lever
- switch
- plunger
- low
- pressure
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
- H01H35/2614—Means for adjustment of "ON" or "OFF" operating pressure by varying the bias on the pressure sensitive element
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00408787A US3846600A (en) | 1973-10-23 | 1973-10-23 | Means for calibrating pressure switches at extra-low pressure settings |
| US73729376A | 1976-11-01 | 1976-11-01 | |
| AU24549/77A AU504926B2 (en) | 1973-10-23 | 1977-04-22 | Calibrating-pressure switches at extra low pressure settings |
| US05/916,992 USRE30207E (en) | 1973-10-23 | 1978-06-19 | Means for calibrating pressure switches at extra-low pressure settings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1042509A true CA1042509A (en) | 1978-11-14 |
Family
ID=27422781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA210,980A Expired CA1042509A (en) | 1973-10-23 | 1974-10-08 | Means for calibrating pressure switches at extra-low pressure settings |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US3846600A (enrdf_load_stackoverflow) |
| JP (1) | JPS5067975A (enrdf_load_stackoverflow) |
| AU (1) | AU504926B2 (enrdf_load_stackoverflow) |
| CA (1) | CA1042509A (enrdf_load_stackoverflow) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4024364A (en) * | 1975-11-28 | 1977-05-17 | Eaton Corporation | Pressure switch mechanism and cam stop arrangement therefor |
| US4109121A (en) * | 1976-07-22 | 1978-08-22 | Robertshaw Controls Company | Electrical switch construction and method of making the same |
| JPS55500374A (enrdf_load_stackoverflow) * | 1978-05-30 | 1980-06-26 | ||
| US4262178A (en) * | 1978-05-30 | 1981-04-14 | Eaton Corporation | Calibration mechanism for a pressure switch |
| JPS635153Y2 (enrdf_load_stackoverflow) * | 1980-11-08 | 1988-02-12 | ||
| US4755639A (en) * | 1987-10-28 | 1988-07-05 | Eaton Corporation | Pressure switch with calibration tab |
| US4947674A (en) * | 1988-09-07 | 1990-08-14 | Commonwealth Edison | Limit switch calibration system |
| US7441439B2 (en) * | 2005-02-07 | 2008-10-28 | Richard Dean Mc Farland | Portable pressure switch calibration and diagnostic tool |
| US9640344B2 (en) | 2014-02-07 | 2017-05-02 | Good Day Tools Llc | Portable pressure switch calibration and diagnostic tool |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2375387A (en) * | 1941-10-31 | 1945-05-08 | Cutler Hammer Inc | Circuit controlling device |
| US2919321A (en) * | 1957-09-30 | 1959-12-29 | Tait Mfg Co The | Pressure differential responsive snapacting control for pumps and the like |
| US3046368A (en) * | 1960-03-31 | 1962-07-24 | Penn Controls | Compressor unloader |
| US3600536A (en) * | 1969-12-22 | 1971-08-17 | Controls Co Of America | Calibrating pressure switches at extra low-pressure setting |
| IT964065B (it) * | 1971-08-24 | 1974-01-21 | Actuated Controls Ltd | Perfezionamenti agli interruttori sensibili alla pression |
| US3845265A (en) * | 1973-07-02 | 1974-10-29 | Controls Co Of America | Low profile pressure switch with plunger adjusting means |
-
1973
- 1973-10-23 US US00408787A patent/US3846600A/en not_active Expired - Lifetime
-
1974
- 1974-10-08 CA CA210,980A patent/CA1042509A/en not_active Expired
- 1974-10-23 JP JP49122325A patent/JPS5067975A/ja active Pending
-
1977
- 1977-04-22 AU AU24549/77A patent/AU504926B2/en not_active Expired
-
1978
- 1978-06-19 US US05/916,992 patent/USRE30207E/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5067975A (enrdf_load_stackoverflow) | 1975-06-06 |
| US3846600A (en) | 1974-11-05 |
| AU2454977A (en) | 1977-12-08 |
| USRE30207E (en) | 1980-02-05 |
| AU504926B2 (en) | 1979-11-01 |
| AU7454174A (en) | 1976-04-29 |
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