GB1486978A – Mineral-mining machine
– Google Patents
GB1486978A – Mineral-mining machine
– Google Patents
Mineral-mining machine
Info
Publication number
GB1486978A
GB1486978A
GB8436/75A
GB843675A
GB1486978A
GB 1486978 A
GB1486978 A
GB 1486978A
GB 8436/75 A
GB8436/75 A
GB 8436/75A
GB 843675 A
GB843675 A
GB 843675A
GB 1486978 A
GB1486978 A
GB 1486978A
Authority
GB
United Kingdom
Prior art keywords
machine
pump
pressure fluid
brake
pressure
Prior art date
1975-02-28
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
GB8436/75A
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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.)
1975-02-28
Filing date
1975-02-28
Publication date
1977-09-28
1975-02-28
Application filed by Coal Industry Patents Ltd
filed
Critical
Coal Industry Patents Ltd
1975-02-28
Priority to GB8436/75A
priority
Critical
patent/GB1486978A/en
1976-02-07
Priority to DE19762604906
priority
patent/DE2604906A1/en
1976-02-13
Priority to US05/657,876
priority
patent/US4045083A/en
1976-02-23
Priority to BE164561A
priority
patent/BE838851A/en
1976-02-24
Priority to FR7605065A
priority
patent/FR2302410A1/en
1977-09-28
Publication of GB1486978A
publication
Critical
patent/GB1486978A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
E—FIXED CONSTRUCTIONS
E21—EARTH DRILLING; MINING
E21C—MINING OR QUARRYING
E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 – E21C33/00, E21C37/00 or E21C39/00
E21C35/04—Safety devices
E—FIXED CONSTRUCTIONS
E21—EARTH DRILLING; MINING
E21C—MINING OR QUARRYING
E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
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
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D2121/00—Type of actuator operation force
F16D2121/02—Fluid pressure
F16D2121/12—Fluid pressure for releasing a normally applied brake, the type of actuator being irrelevant or not provided for in groups F16D2121/04 – F16D2121/10
Abstract
1486978 Mineral-mining machines COAL INDUSTRY (PATENTS) Ltd 3 Feb 1976 [28 Feb 1975] 8436/75 Heading E1F In a hydraulic circuit of a mineral-mining machine having a driven hydraulic pump 2 for feeding pressure fluid to a hydraulic drive motor 6 arrangeable to drive the machine’s haulage mechanism 8-there is provided means 11 sensitive to the pressure of the pressure fluid feed to the motor to control actuation of a brake 12 on the machine so that in use of the machine, when the sensed pressure is below a preselected value the brake is applied. Preferably said means includes a hydraulic control valve 20 sensitive to the pressure fluid feed to the motor and arranged to block the feed of pressure fluid, when the sensed pressure is below the preselected value, to the brake 12, which is biassed, e.g. by spring 16, towards the applied position and is caused to be released by pressure fluid supplied from a second pump 7 to means, e.g. piston cylinder units 13 acting like the spring 16 on the pad 15 of the brake. The pump 2 may comprise a parallel arrangement of a fixed delivery pump 2 and a variable delivery pump 4. The pump 4 is normally used during cutting operations when the machine is traversed along the face at low speeds and both pumps are used when the machine is flitted along the face at relatively high speeds.
GB8436/75A
1975-02-28
1975-02-28
Mineral-mining machine
Expired
GB1486978A
(en)
Priority Applications (5)
Application Number
Priority Date
Filing Date
Title
GB8436/75A
GB1486978A
(en)
1975-02-28
1975-02-28
Mineral-mining machine
DE19762604906
DE2604906A1
(en)
1975-02-28
1976-02-07
EXTRACTION MACHINE FOR UNDERGROUND MINING
US05/657,876
US4045083A
(en)
1975-02-28
1976-02-13
Longwall mining machine with haulage motor sensed pressure controlled rail brake
BE164561A
BE838851A
(en)
1975-02-28
1976-02-23
ORE MILLING MACHINE
FR7605065A
FR2302410A1
(en)
1975-02-28
1976-02-24
ORE MILLING MACHINE
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB8436/75A
GB1486978A
(en)
1975-02-28
1975-02-28
Mineral-mining machine
Publications (1)
Publication Number
Publication Date
GB1486978A
true
GB1486978A
(en)
1977-09-28
Family
ID=9852461
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB8436/75A
Expired
GB1486978A
(en)
1975-02-28
1975-02-28
Mineral-mining machine
Country Status (5)
Country
Link
US
(1)
US4045083A
(en)
BE
(1)
BE838851A
(en)
DE
(1)
DE2604906A1
(en)
FR
(1)
FR2302410A1
(en)
GB
(1)
GB1486978A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2489409A1
(en)
*
1980-08-15
1982-03-05
Coal Industry Patents Ltd
BRAKING EQUIPMENT FOR UNDERGROUND MINING MACHINERY
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2622218C2
(en)
*
1976-05-19
1983-01-27
Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum
Method and device for securing mining machines used in inclined or steep seams
US4196798A
(en)
*
1977-07-01
1980-04-08
Coal Industry (Patents) Limited
Brake equipment for mining machines
ZA806314B
(en)
*
1979-10-19
1981-10-28
Minsup Mining Supplies
Mining machine
Family Cites Families (11)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2104780A
(en)
*
1933-09-22
1938-01-11
Harry F Vickers
Hydraulic hoisting unit and control system therefor
US2327325A
(en)
*
1941-08-26
1943-08-17
Frederick F Zavatkay
Automatic safety rail clamp
US3253683A
(en)
*
1963-11-07
1966-05-31
Applied Power Ind Inc
Safety circuit
GB1105683A
(en)
*
1965-11-02
1968-03-13
Anderson Mavor Ltd
Improvements in fluid pressure drive systems for mineral mining machines
FR1487372A
(en)
*
1966-05-13
1967-07-07
Poclain Sa
Dual control device of a distributor
DE1539379A1
(en)
*
1967-02-03
1970-08-13
Bosch Gmbh Robert
Motor vehicle headlights with a halogen twin-filament light bulb
DE2008052A1
(en)
*
1970-02-21
1971-09-02
US3647027A
(en)
*
1970-03-23
1972-03-07
Dover Corp
Safety system for hydraulic elevators
GB1335386A
(en)
*
1970-06-26
1973-10-24
Caterpillar Tractor Co
Systems for operating and controlling hydraulically driven winches hoists and the like
US3768608A
(en)
*
1971-01-20
1973-10-30
Bendix Corp
Hydraulic spring brake control system
FR2129871B1
(en)
*
1971-03-17
1975-02-21
Poclain Sa
1975
1975-02-28
GB
GB8436/75A
patent/GB1486978A/en
not_active
Expired
1976
1976-02-07
DE
DE19762604906
patent/DE2604906A1/en
not_active
Withdrawn
1976-02-13
US
US05/657,876
patent/US4045083A/en
not_active
Expired – Lifetime
1976-02-23
BE
BE164561A
patent/BE838851A/en
unknown
1976-02-24
FR
FR7605065A
patent/FR2302410A1/en
active
Granted
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2489409A1
(en)
*
1980-08-15
1982-03-05
Coal Industry Patents Ltd
BRAKING EQUIPMENT FOR UNDERGROUND MINING MACHINERY
US4406354A
(en)
*
1980-08-15
1983-09-27
Coal Industry (Patents) Ltd.
Brake equipment for underground mining machines
Also Published As
Publication number
Publication date
DE2604906A1
(en)
1976-09-09
FR2302410A1
(en)
1976-09-24
US4045083A
(en)
1977-08-30
BE838851A
(en)
1976-08-23
FR2302410B1
(en)
1980-04-04
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Legal Events
Date
Code
Title
Description
1978-02-08
PS
Patent sealed [section 19, patents act 1949]
1983-01-06
746
Register noted ‘licences of right’ (sect. 46/1977)
1984-10-17
PCNP
Patent ceased through non-payment of renewal fee
