GB1098288A - Fluid actuated vibrator devices - Google Patents

Fluid actuated vibrator devices

Info

Publication number
GB1098288A
GB1098288A GB49304/65A GB4930465A GB1098288A GB 1098288 A GB1098288 A GB 1098288A GB 49304/65 A GB49304/65 A GB 49304/65A GB 4930465 A GB4930465 A GB 4930465A GB 1098288 A GB1098288 A GB 1098288A
Authority
GB
United Kingdom
Prior art keywords
piston
movement
port
pistons
fluid
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
GB49304/65A
Inventor
David Ewart Bick
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.)
Dowty Technical Developments Ltd
Original Assignee
Dowty Technical Developments 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.)
Filing date
Publication date
Application filed by Dowty Technical Developments Ltd filed Critical Dowty Technical Developments Ltd
Priority to GB49304/65A priority Critical patent/GB1098288A/en
Priority to US593456A priority patent/US3425498A/en
Publication of GB1098288A publication Critical patent/GB1098288A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/08—Means for driving the impulse member comprising a built-in air compressor, i.e. the tool being driven by air pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/275—Tools having at least two similar components
    • B25D2250/285—Tools having three or more similar components, e.g. three motors
    • B25D2250/291—Tools having three or more parallel bits, e.g. needle guns

Abstract

1,098,288. Percussive tools. DOWTY TECHNICAL DEVELOPMENTS Ltd. Nov. 18, 1966 [Nov. 19, 1965], No. 49304/65. Heading B4C. A percussive tool comprises two working pistons 4, 104 reciprocable in cylinders 2, 102 under the control of a main valve 49, a pilot valve 16, 116 associated with each cylinder and arranged to be opened by movement of the piston during its working stroke, to cause the other piston to perform its return stroke and to be closed by movement of the piston during its return stroke which movement, after closure of the pilot valve, causing movement of the main valve from one operative position to the other operative position. The pistons are adapted to strike, via anvils 21, 121, the shanks 33, 133 of tools such as picks 34, 134. In operation with the main valve in the position shown, a pressurized fluid is fed, via an inlet port 41 controlled by manually-actuated valves 42, ports 44, 113 into the cylinder 102 thereby driving the piston 104 downwardly. The pressurized fluid also flows via a port 116, adjustable restrictor 57, passage 55, port 15 into the cylinder 2 thereby returning the piston 4, the fluid on the opposite of the latter piston being exhausted via port 16, an adjustable restrictor 56, passage 54, ports 46, 45; the speed of the return depends upon the setting of the restrictors. When the piston 4 closes the port 16 (constituting the pilot valve) fluid is trapped in a cylinder space 12 thereby increasing the pressure so that the valve 49 is moved to its other position. The movement of the two pistons is then reversed. At the end of each working stroke fluid is trapped in chambers 4, 114 after the pistons have closed the ports 15, 115 thereby acting as a damper.
GB49304/65A 1965-11-19 1965-11-19 Fluid actuated vibrator devices Expired GB1098288A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB49304/65A GB1098288A (en) 1965-11-19 1965-11-19 Fluid actuated vibrator devices
US593456A US3425498A (en) 1965-11-19 1966-11-10 Fluid actuated vibrator devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49304/65A GB1098288A (en) 1965-11-19 1965-11-19 Fluid actuated vibrator devices

Publications (1)

Publication Number Publication Date
GB1098288A true GB1098288A (en) 1968-01-10

Family

ID=10451890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49304/65A Expired GB1098288A (en) 1965-11-19 1965-11-19 Fluid actuated vibrator devices

Country Status (2)

Country Link
US (1) US3425498A (en)
GB (1) GB1098288A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996005944A1 (en) * 1994-08-19 1996-02-29 Synthes Ag Chur Percussion element

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3596562A (en) * 1968-01-12 1971-08-03 Nat Res Dev Transducer for converting fluid pressure oscillations into mechanical oscillations
US3559538A (en) * 1968-12-23 1971-02-02 Borg Warner Actuator
US3892988A (en) * 1974-02-27 1975-07-01 William M Gran Hand-held multi-purpose electric meat tenderizer
US4036108A (en) * 1975-09-12 1977-07-19 Dobson Park Industries, Ltd. Pressure fluid operated percussion tools
SE405133B (en) * 1977-05-27 1978-11-20 Andreasson Lars I TOOLS PREFERABLY FOR USE IN COLLABORATION WITH A PATCH HAMMER WHICH IS MOUNTED ON A LARGER WORKING MACHINE, FOR EXTREME A EXCAVATOR
US4207802A (en) * 1978-04-05 1980-06-17 Homuth Kenneth C Hydraulic cylinder with improved dashpot and porting
US4702147A (en) * 1985-08-02 1987-10-27 Johnson Don E Engine with pneumatic valve actuation
US4825960A (en) * 1988-06-30 1989-05-02 Molex Incorporated Synchronized hydraulic hammer arrangement
FI115957B (en) * 2001-11-07 2005-08-31 Sandvik Tamrock Oy Double piston impactor
FI114290B (en) * 2003-02-21 2004-09-30 Sandvik Tamrock Oy Control valve and arrangement on impactor
KR102256436B1 (en) * 2016-06-28 2021-05-25 후루까와 로크 드릴 가부시끼가이샤 2 Piston type hydraulic strike device
RU2751304C1 (en) * 2020-12-14 2021-07-13 Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук (ИГД СО РАН) System of hydropercussion devices
RU2751303C1 (en) * 2020-12-14 2021-07-13 Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук (ИГД СО РАН) System of hydropercussion devices

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE18115C (en) * M. FRIEDRICH in Plagwitz-Leipzig Device for the extraction of peat fibers for cardboard and paper production and simultaneous production of prefabricated peat
US279984A (en) * 1883-06-26 Steam-power stamp
US2643644A (en) * 1947-11-26 1953-06-30 Walter C Way Pressure governed time valve
NL88684C (en) * 1953-07-15
US2996014A (en) * 1959-10-30 1961-08-15 Luther E Lee Pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996005944A1 (en) * 1994-08-19 1996-02-29 Synthes Ag Chur Percussion element

Also Published As

Publication number Publication date
US3425498A (en) 1969-02-04

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