NL226166A - - Google Patents

Info

Publication number: NL226166A
Authority: NL; Netherlands

Application number

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.)

1957-04-03

Publication of NL226166A publication Critical patent/NL226166A/xx

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Mining & Mineral Resources (AREA)
Structural Engineering (AREA)
Life Sciences & Earth Sciences (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Geology (AREA)
Safety Valves (AREA)

NL226166D 1957-04-03 NL226166A (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DESCH21864A DE1038505B (de)	1957-04-03	1957-04-03	UEberdruckventil, insbesondere fuer mehrteilige Stuetzelemente des Grubenausbaus

Publications (1)

Publication Number	Publication Date
NL226166A true NL226166A (xx)

Family

ID=7429169

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL226166D NL226166A (xx)	1957-04-03

Country Status (4)

Country	Link
BE (1)	BE565731A (xx)
DE (1)	DE1038505B (xx)
GB (1)	GB876990A (xx)
NL (1)	NL226166A (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3476142A (en) *	1966-09-16	1969-11-04	Eaton Yale & Towne	Multiple check valve
GB0623741D0 (en)	2006-11-28	2007-01-10	Bifold Fluidpower Ltd	Fluid flow control apparatus
CN111239058B (zh) *	2020-02-24	2022-10-21	深圳九星印刷包装集团有限公司	指示装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE928945C (de) *	1951-06-09	1955-06-16	Eisenwerk Wanheim G M B H	Verstellbarer hydraulischer Grubenstempel

0
- NL NL226166D patent/NL226166A/xx unknown
- BE BE565731D patent/BE565731A/xx unknown
1957
- 1957-04-03 DE DESCH21864A patent/DE1038505B/de active Pending
1958
- 1958-03-26 GB GB963358A patent/GB876990A/en not_active Expired

Also Published As

Publication number	Publication date
GB876990A (en)	1961-09-06
DE1038505B (de)	1958-09-11
BE565731A (xx)

Publication	Publication Date	Title
DE1245363C2 (xx)	1968-02-08
DE1071995B (xx)
DK122399B (xx)	1972-02-28
DE1071397B (xx)
BE571045A (xx)
BE565731A (xx)
BE571005A (xx)
BE571508A (xx)
BE698519A (xx)	1967-11-03
BE572003A (xx)
BE569444A (xx)
BE568885A (xx)
BE568778A (xx)
BE568641A (xx)
BE570316A (xx)
BE567608A (xx)
BE566601A (xx)
BE565969A (xx)
BE556147A (xx)
BE556167A (xx)	1960-02-26
BE557963A (xx)	1957-11-30
BE560349A (xx)
BE560469A (xx)
BE561600A (xx)
BE561672A (xx)