FR650907A - Improvements in thermostatic switches - Google Patents

Improvements in thermostatic switches

Info

Publication number
FR650907A
FR650907A FR650907DA FR650907A FR 650907 A FR650907 A FR 650907A FR 650907D A FR650907D A FR 650907DA FR 650907 A FR650907 A FR 650907A
Authority
FR
France
Prior art keywords
thermostatic switches
thermostatic
switches
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
Application number
Other languages
French (fr)
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.)
BIRKA REGULATOR AB
Original Assignee
BIRKA REGULATOR AB
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.)
Filing date
Publication date
Application filed by BIRKA REGULATOR AB filed Critical BIRKA REGULATOR AB
Application granted granted Critical
Publication of FR650907A publication Critical patent/FR650907A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/64—Contacts
    • H01H37/68—Contacts sealed in evacuated or gas-filled tube
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
FR650907D 1927-03-19 1928-03-16 Improvements in thermostatic switches Expired FR650907A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE287453X 1927-03-19

Publications (1)

Publication Number Publication Date
FR650907A true FR650907A (en) 1929-02-12

Family

ID=20307149

Family Applications (1)

Application Number Title Priority Date Filing Date
FR650907D Expired FR650907A (en) 1927-03-19 1928-03-16 Improvements in thermostatic switches

Country Status (4)

Country Link
DE (1) DE504836C (en)
FR (1) FR650907A (en)
GB (1) GB287453A (en)
NL (1) NL25924C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB354822I5 (en) * 1956-07-19
DE2727994C2 (en) * 1977-06-22 1986-02-13 Lothar Dr. Dipl.Kaufm. Dipl.-Handelsl. 5030 Hürth Wurzer Shut-off valve
DE4238767A1 (en) * 1992-11-12 1994-05-19 Siemens Ag Vacuum relay with rounded ends of cylindrical contact pins - has two pins at end of common contact bolt arranged symmetrically w.r.t. axis orthogonal to direction of movement

Also Published As

Publication number Publication date
GB287453A (en) 1929-02-14
NL25924C (en)
DE504836C (en) 1930-08-08

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