GB1161445A - Impact Tools - Google Patents
Impact ToolsInfo
- Publication number
- GB1161445A GB1161445A GB43987/67A GB4398767A GB1161445A GB 1161445 A GB1161445 A GB 1161445A GB 43987/67 A GB43987/67 A GB 43987/67A GB 4398767 A GB4398767 A GB 4398767A GB 1161445 A GB1161445 A GB 1161445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- passage
- surface area
- liquid
- valve
- bore
- 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
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
- B25D9/12—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
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/14—Control devices for the reciprocating piston
- B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S173/00—Tool driving or impacting
- Y10S173/04—Liquid operated
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
1,161,445. Percussive tools. WORTHING- TON CORP. 27 Sept., 1967 [27 Sept., 1966], No. 43987/67. Heading B4C. A percussive tool comprises an impact piston 36 having operative surface area 52, 53, an inlet passage 47 for supplying pressurized liquid to the surface area 53 continuously and valve means 38 for controlling the flow of liquid to the surface area 52 in order to effect a working stroke, a land 51 on the piston being adapted to close off communication between the pressurized liquid and the surface area 52 while the valve means is still positioned to supply pressurized liquid thereto. The valve means 38 is actuated, in one direction, by means of small diameter pins 62 in direct communication with the inlet passage 47 ; and, in the other direction, by means of larger diameter pins 60 communicating with the inlet passage via ports 70, 71, 72 and a bore 35 controlled by the land 51. In operation, with the apparatus in the position shown a pilot valve 40 is actuated by means of a trigger 44 so as to admit pressurized liquid from an inlet port 30 into the passage 47 and then via a passage 76, bore 37 and passage 75, to act on the surface area 52 so as to cause the piston to effect a working stroke. Towards the end of the stroke, liquid which has been acting on the pins 60 to maintain the valve 38 in the position shown, is exhausted so as to allow the valve to be moved to its other position by liquid acting on the pins 62. The valve 38 then permits the liquid acting on the surface area 52 to be exhausted via bore 35, passage 75, bore 38 and exhaust passage 79 (Fig. 4); the impact piston is then returned by liquid acting on the surface area 53. During operation of the tool only build-up of pressure in the passage 75 is relieved by means of a bumper 52 which is loaded by a spring 93 and by pressurized liquid via a passage 94. A pneumatic-piston type accumulator 48 is also connected to the inlet passage 47.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US582299A US3399602A (en) | 1966-09-27 | 1966-09-27 | Impact tools |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1161445A true GB1161445A (en) | 1969-08-13 |
Family
ID=24328597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43987/67A Expired GB1161445A (en) | 1966-09-27 | 1967-09-27 | Impact Tools |
Country Status (3)
Country | Link |
---|---|
US (1) | US3399602A (en) |
JP (1) | JPS505121B1 (en) |
GB (1) | GB1161445A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3664435A (en) * | 1970-11-09 | 1972-05-23 | Worthington Corp Worthington C | Hydraulic hammer with automatic stopping action |
US3766830A (en) * | 1971-03-24 | 1973-10-23 | Montabert Roger | Percussion apparatus |
US3887019A (en) * | 1971-05-11 | 1975-06-03 | Af Hydraulics | Hydraulic percussive implement |
US3857448A (en) * | 1971-11-15 | 1974-12-31 | Proline Ind Pty Ltd | Hydraulically operated tamper |
US3971448A (en) * | 1973-09-04 | 1976-07-27 | The Stanley Works | Breaker construction and valve therefor |
US3916764A (en) * | 1974-02-11 | 1975-11-04 | Ackley Manufacturing Co | Concrete breaker construction and valve mechanism |
US4444274A (en) * | 1980-08-29 | 1984-04-24 | Maruzen Kogyo Company Limited | Liquid pressure striking device |
US4466493A (en) * | 1981-12-17 | 1984-08-21 | Hed Corporation | Reciprocating linear fluid motor |
US4449470A (en) * | 1982-02-18 | 1984-05-22 | Teleflex Incorporated | Hydraulic control package for a marine steering system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA651732A (en) * | 1962-11-06 | Ingenieurburo Dipl.Ing. Friedrich Hein? Flottmann | Control system for a hydraulically operated percussion device | |
US908921A (en) * | 1906-11-13 | 1909-01-05 | Geo D Whitcomb Company | Motor-actuated hand-tool. |
US1430764A (en) * | 1920-08-13 | 1922-10-03 | Ingersoll Rand Co | Rock drill |
US2248546A (en) * | 1939-11-18 | 1941-07-08 | Ingersoll Rand Co | Rock drill |
US3207043A (en) * | 1964-04-09 | 1965-09-21 | Sperry Rand Corp | Hydraulic hammer |
-
1966
- 1966-09-27 US US582299A patent/US3399602A/en not_active Expired - Lifetime
-
1967
- 1967-09-13 JP JP42058439A patent/JPS505121B1/ja active Pending
- 1967-09-27 GB GB43987/67A patent/GB1161445A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS505121B1 (en) | 1975-02-28 |
US3399602A (en) | 1968-09-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |