GB638229A - Improvements in or relating to an internal combustion percussion tool - Google Patents
Improvements in or relating to an internal combustion percussion toolInfo
- Publication number
- GB638229A GB638229A GB31417/47A GB3141747A GB638229A GB 638229 A GB638229 A GB 638229A GB 31417/47 A GB31417/47 A GB 31417/47A GB 3141747 A GB3141747 A GB 3141747A GB 638229 A GB638229 A GB 638229A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tool
- relating
- internal combustion
- percussion tool
- crankshaft
- 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
- B25D9/10—Means for driving the impulse member comprising a built-in internal-combustion engine
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Valve Device For Special Equipments (AREA)
- Braking Arrangements (AREA)
Abstract
638,229. Two-stroke engines. WEYANDT, C. S. Nov. 27, 1947, No. 31417. Convention date, Dec. 19, 1946. [Classes 7 (ii) and 7 (vi)] In a percussion tool in which a free piston 12 strikes the tool on ignition of a charge previously compressed in a chamber 30 by an auxiliary piston 11 connected to a crankshaft 13, a manually-operated brake acts on the crankshaft to synchronise the movement of the two pistons. A brake band 38 is contracted on a pulley 36 by finger engagement with a member 52 which extends into the tool handle 19 which carries the carburetter throttle lever 20. Specification 632,560 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US638229XA | 1946-12-19 | 1946-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB638229A true GB638229A (en) | 1950-06-07 |
Family
ID=22051738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31417/47A Expired GB638229A (en) | 1946-12-19 | 1947-11-27 | Improvements in or relating to an internal combustion percussion tool |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB638229A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911403A (en) * | 2021-09-30 | 2022-01-11 | 北京空间机电研究所 | Unlocking device adopting gas to control unlocking time sequence |
-
1947
- 1947-11-27 GB GB31417/47A patent/GB638229A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911403A (en) * | 2021-09-30 | 2022-01-11 | 北京空间机电研究所 | Unlocking device adopting gas to control unlocking time sequence |
| CN113911403B (en) * | 2021-09-30 | 2023-02-28 | 北京空间机电研究所 | Unlocking device adopting gas to control unlocking time sequence |
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