GB1434979A - Stall torque air shut-off control for pneumatic tools for example nur runners - Google Patents
Stall torque air shut-off control for pneumatic tools for example nur runnersInfo
- Publication number
- GB1434979A GB1434979A GB4798173A GB4798173A GB1434979A GB 1434979 A GB1434979 A GB 1434979A GB 4798173 A GB4798173 A GB 4798173A GB 4798173 A GB4798173 A GB 4798173A GB 1434979 A GB1434979 A GB 1434979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- valve
- motor
- seat
- ball
- 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
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- 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
- F16K17/20—Excess-flow valves
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0971—Speed responsive valve control
- Y10T137/108—Centrifugal mass type [exclusive of liquid]
- Y10T137/1171—With fluid servo-motor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Safety Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
1434979 Nut runners CHICAGO PNEUMATIC TOOL CO 15 Oct 1973 [30 Oct 1972] 47981/73 Heading B3N [Also in Divisions F2 and G3] A pneumatic nut runner includes a motor 11, an air shut-off valve 22 adapted to move to a closed position upon chamber 34 being pressurized via bleed port 33, and a throttle valve 16, characterized by a centrifugally operable control unit 30 comprising a body 36 mounted to the rotor shaft 12 of the motor for rotation in a vented chamber 35, the body has an internal chamber 39 provided with a ball valve seat 41 connected by port 45 to the vented chamber, a ball valve 42 movable axially relative to the seat and being biased by spring 43 theretoward, and an inlet port 46 to the internal chamber connected with the chamber 34 at the underside of the shut-off valve 22, the ball valve being movable from its seat in response to centrifugal forces developed by the motor. In operation depression of valve 16 allows air to pass to the motor and bleed via port 33 to chamber 34. As the motor picks up speed valve ball 42 is moved off its seat thus venting chamber 34. The ball does not move back on to its seat until the water stops. Build up of pressure in chamber 34 then occurs and valve 22 moves to a closed position. The control unit 30 is balanced.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30194272A | 1972-10-30 | 1972-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1434979A true GB1434979A (en) | 1976-05-12 |
Family
ID=23165566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4798173A Expired GB1434979A (en) | 1972-10-30 | 1973-10-15 | Stall torque air shut-off control for pneumatic tools for example nur runners |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US3791458A (en) |
| JP (1) | JPS5631231B2 (en) |
| AU (1) | AU474481B2 (en) |
| BE (1) | BE803947A (en) |
| BR (1) | BR7306238D0 (en) |
| CA (1) | CA995031A (en) |
| DE (1) | DE2353472C2 (en) |
| FR (1) | FR2333616A1 (en) |
| GB (1) | GB1434979A (en) |
| IN (1) | IN138763B (en) |
| IT (1) | IT989899B (en) |
| NL (1) | NL7310265A (en) |
| SE (1) | SE389826B (en) |
| ZA (1) | ZA737285B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904305A (en) * | 1974-08-19 | 1975-09-09 | Cooper Ind Inc | Speed sensing air tool shutoff |
| US4004859A (en) * | 1975-08-18 | 1977-01-25 | Cooper Industries, Inc. | Air tool with speed responsive shutoff |
| US4082103A (en) * | 1976-09-24 | 1978-04-04 | Chrysler Corporation | Centrifugal force hydraulic governor |
| US4120604A (en) * | 1977-04-29 | 1978-10-17 | Garofalo Nicholas J | Portable pneumatic nut running tool having air shut-off controls |
| US4222702A (en) * | 1978-09-25 | 1980-09-16 | Cooper Industries, Inc. | Deceleration sensitive air tool shutoff |
| CA1125593A (en) * | 1979-02-21 | 1982-06-15 | William Workman, Jr. | Speed responsive motor shutoff mechanism for fluid operated tool |
| US4346765A (en) * | 1979-02-21 | 1982-08-31 | Cooper Industries, Inc. | Speed responsive motor shutoff mechanism for fluid operated tool |
| SE427810B (en) * | 1981-11-23 | 1983-05-09 | Atlas Copco Ab | TWO-ENGINE TOOL FOR TIGHTENING SCREW TAPE |
| DE3533396C2 (en) * | 1985-09-19 | 1994-12-01 | Hilti Ag | Setting tool for screwing in threaded rods |
| US4844176A (en) * | 1987-01-08 | 1989-07-04 | The Rotor Tool Company | Air tool with torque shut-off valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2214119A (en) * | 1938-08-06 | 1940-09-10 | Morgan Smith S Co | Valve control mechanism |
| US2504441A (en) * | 1946-02-16 | 1950-04-18 | Independent Pneumatic Tool Co | Governor for portable tools |
| US3373824A (en) * | 1965-11-24 | 1968-03-19 | Stanley Works | Fluid operated tool |
| US3587752A (en) * | 1969-06-02 | 1971-06-28 | Black & Decker Mfg Co | Fluidic governor for air tools |
| US3656560A (en) * | 1970-09-29 | 1972-04-18 | Ingersoll Rand Co | Automatic shut-off valve for power tool |
| US3680572A (en) * | 1970-10-12 | 1972-08-01 | Westinghouse Electric Corp | Pneumatic overspeed protective system |
-
1972
- 1972-10-30 US US3791458D patent/US3791458A/en not_active Expired - Lifetime
-
1973
- 1973-07-16 IT IT5149673A patent/IT989899B/en active
- 1973-07-24 NL NL7310265A patent/NL7310265A/xx not_active Application Discontinuation
- 1973-07-30 SE SE7310486A patent/SE389826B/en unknown
- 1973-08-14 BR BR623873A patent/BR7306238D0/en unknown
- 1973-08-15 JP JP9162373A patent/JPS5631231B2/ja not_active Expired
- 1973-08-21 FR FR7330311A patent/FR2333616A1/en active Granted
- 1973-08-23 BE BE134871A patent/BE803947A/en not_active IP Right Cessation
- 1973-08-29 AU AU59784/73A patent/AU474481B2/en not_active Expired
- 1973-08-31 CA CA180,153A patent/CA995031A/en not_active Expired
- 1973-09-11 IN IN2076/CAL/73A patent/IN138763B/en unknown
- 1973-09-12 ZA ZA737285*A patent/ZA737285B/en unknown
- 1973-10-15 GB GB4798173A patent/GB1434979A/en not_active Expired
- 1973-10-25 DE DE2353472A patent/DE2353472C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7310265A (en) | 1974-05-02 |
| BE803947A (en) | 1974-02-25 |
| AU5978473A (en) | 1975-03-06 |
| FR2333616A1 (en) | 1977-07-01 |
| ZA737285B (en) | 1974-08-28 |
| DE2353472C2 (en) | 1984-02-23 |
| IT989899B (en) | 1975-06-10 |
| FR2333616B1 (en) | 1978-04-21 |
| JPS4977298A (en) | 1974-07-25 |
| JPS5631231B2 (en) | 1981-07-20 |
| SE389826B (en) | 1976-11-22 |
| DE2353472A1 (en) | 1974-05-09 |
| US3791458A (en) | 1974-02-12 |
| AU474481B2 (en) | 1976-07-22 |
| CA995031A (en) | 1976-08-17 |
| BR7306238D0 (en) | 1974-06-27 |
| IN138763B (en) | 1976-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |