EP0391856A3 - Pneumatic hammer - Google Patents
Pneumatic hammer Download PDFInfo
- Publication number
- EP0391856A3 EP0391856A3 EP19900810267 EP90810267A EP0391856A3 EP 0391856 A3 EP0391856 A3 EP 0391856A3 EP 19900810267 EP19900810267 EP 19900810267 EP 90810267 A EP90810267 A EP 90810267A EP 0391856 A3 EP0391856 A3 EP 0391856A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- hammer
- handle
- handles
- link
- housing
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/04—Handles; Handle mountings
- B25D17/043—Handles resiliently mounted relative to the hammer housing
-
- 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
- B25D2250/371—Use of springs
- B25D2250/381—Leaf springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Percussion Or Vibration Massage (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
Der Hammer hat zwei quer vom Gehäuse (1) abstehende Handgriffe (11,12). Diese sind an den freien Enden einer Z-förmig gebogenen Blattfeder (10) angebracht. Die Biegungen (13,14) der Feder (10) umschlingen gehäusefeste Walzen (15,16) mit Spiel. Ein Drücker (22) ist am einen Handgriff (11) schwenkbar gelagert. Er hat eine Kulisse (27), deren Krümmungszentrum bei betätigtem Drücker (22) annähernd mit dem Schwenkzentrum (26) des zugehörigen Handgriffs (11) zusammenfällt. Die Kulisse (27) betätigt über Uebertragungsglieder (31,32) einen Ventilstift (5) des Hammers. Durch diese Ausbildung können nicht nur die Grundfrequenzen, sondern auch höherfrequente Schwingungen des Hammers wirksam von den Handgriffen (11,12) abgeschirmt werden. Auch beim Ziehen des Hammers ist diese Ausbildung mindestens teilweise wirksam. The hammer has two handles (11, 12) projecting transversely from the housing (1). These are attached to the free ends of a Z-shaped leaf spring (10). The bends (13, 14) of the spring (10) loop around the rollers (15, 16) fixed to the housing with play. A pusher (22) is pivotally mounted on a handle (11). It has a link (27) whose center of curvature coincides approximately with the pivot center (26) of the associated handle (11) when the handle (22) is actuated. The link (27) actuates a valve pin (5) of the hammer via transmission elements (31, 32). With this design, not only the basic frequencies but also higher-frequency vibrations of the hammer can be effectively shielded from the handles (11, 12). This training is also at least partially effective when pulling the hammer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH132089 | 1989-04-07 | ||
CH1320/89 | 1989-04-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0391856A2 EP0391856A2 (en) | 1990-10-10 |
EP0391856A3 true EP0391856A3 (en) | 1992-07-08 |
Family
ID=4207683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900810267 Withdrawn EP0391856A3 (en) | 1989-04-07 | 1990-04-03 | Pneumatic hammer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0391856A3 (en) |
AU (1) | AU5307190A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4134581A1 (en) * | 1991-10-16 | 1993-04-22 | Mannesmann Ag | FLUID OPERATED DRUM TOOL |
US5273120A (en) * | 1993-05-26 | 1993-12-28 | Ingersoll-Rand Company | Power tool with a vibration absorbing handle |
FR2808719B1 (en) * | 2000-05-15 | 2002-09-20 | Sullair Europ | GRIPPING SYSTEM OF A PERCUSSION APPARATUS IN PARTICULAR |
EP1166972A3 (en) * | 2000-06-27 | 2004-01-21 | Framatome Connectors International | Power tool trigger linkage |
DE102011082093A1 (en) * | 2011-09-02 | 2013-03-07 | Robert Bosch Gmbh | Handle device for a hand tool |
EP3766639A1 (en) * | 2019-07-18 | 2021-01-20 | Hilti Aktiengesellschaft | Handheld machine tool |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB242218A (en) * | 1924-10-29 | 1926-03-11 | Ingersoll Rand Co | Improvement in pneumatic hammer tool |
US3372759A (en) * | 1964-10-28 | 1968-03-12 | Hermann Wacker And Peter Wacke | Means for suppressing blows, shocks or vibrations in the operation of an apparatus such as a power driven hammer or tamper |
FR2540774A1 (en) * | 1983-02-14 | 1984-08-17 | Maco Meudon Sa | Control device for articulated handles on a work site tool |
GB2138348A (en) * | 1983-04-22 | 1984-10-24 | Roland Andersson | Vibration damping handgrip |
EP0343656A2 (en) * | 1988-05-27 | 1989-11-29 | Kyowa Metal Works Co., Ltd. | Vibration free handle |
-
1990
- 1990-04-03 EP EP19900810267 patent/EP0391856A3/en not_active Withdrawn
- 1990-04-06 AU AU53071/90A patent/AU5307190A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB242218A (en) * | 1924-10-29 | 1926-03-11 | Ingersoll Rand Co | Improvement in pneumatic hammer tool |
US3372759A (en) * | 1964-10-28 | 1968-03-12 | Hermann Wacker And Peter Wacke | Means for suppressing blows, shocks or vibrations in the operation of an apparatus such as a power driven hammer or tamper |
FR2540774A1 (en) * | 1983-02-14 | 1984-08-17 | Maco Meudon Sa | Control device for articulated handles on a work site tool |
GB2138348A (en) * | 1983-04-22 | 1984-10-24 | Roland Andersson | Vibration damping handgrip |
EP0343656A2 (en) * | 1988-05-27 | 1989-11-29 | Kyowa Metal Works Co., Ltd. | Vibration free handle |
Also Published As
Publication number | Publication date |
---|---|
AU5307190A (en) | 1990-10-11 |
EP0391856A2 (en) | 1990-10-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE FR GB IT LI SE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: STEINER, HEINZ |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT CH DE FR GB IT LI SE |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19930109 |