FR2377871A1 - Pneumatic drill compressed air distributor - has plastics housing of two distinct pieces containing reciprocating metal pastille - Google Patents
Pneumatic drill compressed air distributor - has plastics housing of two distinct pieces containing reciprocating metal pastilleInfo
- Publication number
- FR2377871A1 FR2377871A1 FR7734529A FR7734529A FR2377871A1 FR 2377871 A1 FR2377871 A1 FR 2377871A1 FR 7734529 A FR7734529 A FR 7734529A FR 7734529 A FR7734529 A FR 7734529A FR 2377871 A1 FR2377871 A1 FR 2377871A1
- Authority
- FR
- France
- Prior art keywords
- pastille
- compressed air
- seats
- pneumatic drill
- air distributor
- 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.)
- Granted
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
- B25D9/14—Control devices for the reciprocating piston
- B25D9/16—Valve arrangements therefor
- B25D9/24—Valve arrangements therefor involving a rocking-plate type valve
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Toys (AREA)
Abstract
The compressed air distributor for a pneumatic drill has a two-piece plastics body (16, 17) holding an oscillating metal pastille (15). The distributor controls the movements of an alternatively displacing machine, and the two pieces form two opposed seats delineating the limits of pastile motion. The plastics material is rigid and has both shock-resistant and shock-absorbent properties. The unit is economic to fabricate and uses a relatively lightweight pastille (15). The pieces may have seats which absorb the kinetic energy of the pastille. The pastille (15) does not rebound but remains flat against the seat concerned, improving performance and reducing the compressed air consumption. Each of the seats may be fabricated in a mechanical mould, and in a single moulding operation. The mould may give thrust chambers (18-22) with intercommunicating holes (26, 27) and a chamber (7) for compressed air admission.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH81377A CH605043A5 (en) | 1977-01-24 | 1977-01-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2377871A1 true FR2377871A1 (en) | 1978-08-18 |
FR2377871B1 FR2377871B1 (en) | 1982-12-03 |
Family
ID=4195780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7734529A Granted FR2377871A1 (en) | 1977-01-24 | 1977-11-10 | Pneumatic drill compressed air distributor - has plastics housing of two distinct pieces containing reciprocating metal pastille |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH605043A5 (en) |
FR (1) | FR2377871A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4446773A (en) * | 1980-11-07 | 1984-05-08 | Maco-Meuden | Compressed air distributor for a reciprocating concrete breaking type machine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR730222A (en) * | 1931-01-21 | 1932-08-09 | Distribution mechanism for pneumatic hammers | |
FR856805A (en) * | 1938-12-13 | 1940-08-10 | Improvements to the pellet dispensers of pneumatic hammers | |
US3935789A (en) * | 1974-07-19 | 1976-02-03 | The Black And Decker Manufacturing Company | Reversing valve |
-
1977
- 1977-01-24 CH CH81377A patent/CH605043A5/xx not_active IP Right Cessation
- 1977-11-10 FR FR7734529A patent/FR2377871A1/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR730222A (en) * | 1931-01-21 | 1932-08-09 | Distribution mechanism for pneumatic hammers | |
FR856805A (en) * | 1938-12-13 | 1940-08-10 | Improvements to the pellet dispensers of pneumatic hammers | |
US3935789A (en) * | 1974-07-19 | 1976-02-03 | The Black And Decker Manufacturing Company | Reversing valve |
Also Published As
Publication number | Publication date |
---|---|
FR2377871B1 (en) | 1982-12-03 |
CH605043A5 (en) | 1978-09-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |