EP0069261B1 - Hammer with a central portion carrying the handle inserted therein - Google Patents

Hammer with a central portion carrying the handle inserted therein Download PDF

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Publication number
EP0069261B1
EP0069261B1 EP82105357A EP82105357A EP0069261B1 EP 0069261 B1 EP0069261 B1 EP 0069261B1 EP 82105357 A EP82105357 A EP 82105357A EP 82105357 A EP82105357 A EP 82105357A EP 0069261 B1 EP0069261 B1 EP 0069261B1
Authority
EP
European Patent Office
Prior art keywords
hammer
socket
plugs
opening
headpieces
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
Application number
EP82105357A
Other languages
German (de)
French (fr)
Other versions
EP0069261A1 (en
Inventor
Karl Lieser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Priority to AT82105357T priority Critical patent/ATE12605T1/en
Publication of EP0069261A1 publication Critical patent/EP0069261A1/en
Application granted granted Critical
Publication of EP0069261B1 publication Critical patent/EP0069261B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/10—Socket, tang, or like fixings with elastic, taper, or other self-grip socket or tang
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D1/00—Hand hammers; Hammer heads of special shape or materials
    • B25D1/02—Inserts or attachments forming the striking part of hammer heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/12—Locking and securing devices
    • B25G3/28—Locking and securing devices comprising wedges, keys, or like expanding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/54—Plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/54—Plastics
    • B25D2222/57—Elastomers, e.g. rubber

Definitions

  • the invention relates to a hammer with the middle part carried by the hammer handle via a plug-in sleeve and head pieces arranged on the opposite side and made of softer material, for example made of plastic or rubber, with mandrels of the middle part equipped with undercuts on the circumferential side positively entering recesses in the head pieces.
  • Such a hammer is from the production of the Wera-Werk company and from its brochure documents, e.g. the documents Weralit 1/77 known as a so-called kickback-free hammer.
  • the middle part consists of a sleeve which is closed at the end by inserted plates which support the mandrels. There is granular material inside the sleeve. A radially aligned insert sleeve is attached to the sleeve, which receives the hammer handle.
  • Such a design is expensive to manufacture because of the many parts forming the middle part.
  • a hammer is also known, the middle part of which is made of malleable cast iron, from which the mandrels extend in one piece.
  • This embodiment requires after-treatment by overturning after the middle part has been cast.
  • no undercuts can be provided on the thorns when casting, so that the head pieces are not sufficiently tight and therefore represent a hazard when working with the hammer.
  • the object of the invention is based on the object of designing a hammer of the required type in a manner which is simple to manufacture in such a way that, in addition to cost-effective production, the safety value of the hammer is increased.
  • a generic hammer of increased utility value is specified.
  • the appropriate choice of material brings casting and safety advantages.
  • the mandrels equipped with undercuts on the circumference can now start from the central part in the same material, so that the head pieces placed on the mandrels are then held securely.
  • the hammer handle is securely fixed.
  • the particularly end of the end of the hammer handle that is particularly at risk is protected in the plug-in sleeve that starts out in one piece from the central part.
  • the total length of the hammer handle is therefore made up of the length of the insert sleeve and the diameter of the middle section.
  • the plug-in sleeve forms a double cone through the inner cavity and the middle part through the widening opening, which leads to an extremely firm fit of the hammer handle.
  • the widening opening serves to receive the wedge hammered into the front end of the hammer handle, so that the middle part can no longer be displaced in both directions relative to the hammer handle.
  • Zinc die casting of medium hardness which provides the required strength, is particularly suitable for producing this middle part. Another advantage is the more cost-effective production, since approx. 30% costs can be saved compared to known hammers.
  • the mandrels have grooves running in the longitudinal direction.
  • the head pieces are not only fixed in the axial direction of the mandrels, but are also secured against twisting on the mandrels.
  • These channels running in the longitudinal direction can also be produced during the spraying process.
  • an advantageous feature is when a cylindrical intermediate section extends between the tapering course of the inner cavity and the widening course of the opening.
  • the hammer has a hammer handle 1, a middle part 2 and the two head pieces 3 and 4 attached to the middle part.
  • the middle part is made of die-cast zinc of medium hardness and is cylindrical in shape.
  • Each mandrel is equipped with four channels 7 running in the same angular distribution in the longitudinal direction.
  • each mandrel 6, adjacent to the front end forms an annular groove-like undercut 8.
  • the front end of each mandrel 6 is then provided with a bevel 9. These serve to facilitate the attachment of the head pieces 3 and 4, which in turn are equipped with central blind holes 11 and 12, respectively.
  • the mounting of the plastic heads 3, 4 on the mandrels 6 is preferably carried out after heating them, so that each head piece 3, 4 is then securely fixed in the axial direction and, in addition, the longitudinal grooves 7 of the mandrels 6 cannot be rotated.
  • a radially aligned plug-in sleeve 13 starts out, the length of which corresponds almost to the diameter of the central part 2.
  • the inner cavity 14 of the insert sleeve 13 tapers approximately up to the transverse central plane of the central part.
  • This tapering course is adjoined by a cylindrical intermediate section 15, which in turn continues into an opening 16 which extends to the lateral surface F of the central part 2 and widens in this direction.
  • Both the inner cavity 14, the intermediate section 15 and the opening 16 are oval in cross section.
  • the intermediate section 15 extends symmetrically to the central axis passing through the mandrels 6 and the central part 2.
  • the hammer handle 1 is at its end 17 facing the middle part 2 before insertion into the middle frustoconical part. After inserting the frustoconical end 17 into the cavity 14, the intermediate section 15 and the opening 16, a wedge 18 shown in dash-dotted lines in FIG adapts to the opening. As a result, the end 17 of the hammer handle 1 is also formed into a double cone, which ensures an extremely secure fit of the middle part 2 on the hammer handle 1.
  • transition point 19 between the middle part 2 and the insert sleeve 13 is rounded, so that a risk of breakage is avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Finger-Pressure Massage (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

1. A hammer having a middle part (2) carried by the hammer handle (1) via an inserting-socket (13), and arranged on opposite sides of its headpieces (3, 4) of softer material, for example, of plastics or rubber, where plugs (6) on the middle part (2) equipped with circumferential undercuts (8) enter with a tight fit into recesses (11, 12) in the headpieces (3, 4), characterized in that the middle part (2), the plugs (6) and the inserting-socket (13) are injection-moulded as one piece of material in a zinc diecasting, the hollow (14) inside the inserting-socket (13) runs on a taper in about as far as the transverse central plane through the middle part (2) and continues directly into an opening (16) which reaches as far as the surface (F) of the middle part (2) and widens in this direction.

Description

Die Erfindung betrifft einen Hammer mit vom Hammerstiel über eine Einsteckbüchse getragenem Mittelteil und an diesem gegenüberliegend angeordneten Kopfstücken aus weicherem Material, beispielsweise aus Kunststoff oder Gummi, wobei mit umfangseitigen Hinterschneidungen ausgestattete Dorne des Mittelteils formschlüssig in Vertiefungen der Kopfstücke eintreten.The invention relates to a hammer with the middle part carried by the hammer handle via a plug-in sleeve and head pieces arranged on the opposite side and made of softer material, for example made of plastic or rubber, with mandrels of the middle part equipped with undercuts on the circumferential side positively entering recesses in the head pieces.

Ein derartiger Hammer ist aus der Produktion der Firma Wera-Werk sowie aus deren Prospektunterlagen, wie z.B. den Unterlagen Weralit 1/77 als sogenannter rückschlagfreier Hammer bekannt. Das Mittelteil besteht aus einer Hülse, die endseitig durch eingesetzte, die Dorne tragende Platten verschlossen ist. Innerhalb der Hülse befindet sich körniges Material. An die Hülse ist eine radial ausgerichtete Einsteckbüchse angesetzt, die den Hammerstiel aufnimmt. Eine solche Bauform ist wegen der vielen das Mittelteil bildenden Teile aufwendig in der Herstellung.Such a hammer is from the production of the Wera-Werk company and from its brochure documents, e.g. the documents Weralit 1/77 known as a so-called kickback-free hammer. The middle part consists of a sleeve which is closed at the end by inserted plates which support the mandrels. There is granular material inside the sleeve. A radially aligned insert sleeve is attached to the sleeve, which receives the hammer handle. Such a design is expensive to manufacture because of the many parts forming the middle part.

Des weiteren ist ein Hammer bekannt, dessen Mittelteil aus Temperguss besteht, von welchem einstückig die Dorne ausgehen. Diese Ausführungsform erfordert nach dem Giessen des Mittelteils eine Nachbehandlung durch Überdrehen. Ausserdem lassen sich beim Giessen an den Dornen keine Hinterschneidungen vorsehen, so dass die Kopfstücke nicht ausreichend festsitzen und daher ein Gefahrenmoment bei der Arbeit mit dem Hammer darstellen.A hammer is also known, the middle part of which is made of malleable cast iron, from which the mandrels extend in one piece. This embodiment requires after-treatment by overturning after the middle part has been cast. In addition, no undercuts can be provided on the thorns when casting, so that the head pieces are not sufficiently tight and therefore represent a hazard when working with the hammer.

Dem Gegenstand der Erfindung liegt die Aufgabe zugrunde, einen Hammer der vorausgesetzten Art in herstellungstechnisch einfacher Weise so auszugestalten, dass neben einer kostengünstigen Herstellung der Sicherheitswert des Hammers erhöht ist.The object of the invention is based on the object of designing a hammer of the required type in a manner which is simple to manufacture in such a way that, in addition to cost-effective production, the safety value of the hammer is increased.

Gelöst wird diese Aufgabe durch das Kennzeichen des Anspruchs 1.This problem is solved by the characterizing part of claim 1.

Zufolge derartiger Ausgestaltung ist ein gattungsgemässer Hammer von erhöhtem Gebrauchswert angegeben. Die entsprechende Materialwahl bringt giess- und sicherungstechnische Vorteile. Die mit umfangseitigen Hinterschneidungen ausgestatteten Dorne können nun materialeinheitlich von dem Mittelteil ausgehen, so dass dann die auf die Dorne aufgesetzten Kopfstücke sicher gehalten sind. Weiterhin erfährt der Hammerstiel eine sichere Festlegung. Das besonders gefährdete vordere Ende des Hammerstiels liegt dabei geschützt in der einstückig von dem Mittelteil ausgehenden Einsteckbüchse. Die Gesamttraglänge für den Hammerstiel setzt sich daher aus der Länge der Einsteckbüchse und dem Durchmesser des Mittelteils zusammen. Sodann formt die Einsteckbüchse durch die Innenhöhlung und das Mittelteil durch die sich erbreiternde Öffnung einen Doppelkonus der zu einem äusserstfesten Stitz des Hammerstiels führt. Die sich erbreiternde Öffnung dient dabei zur Aufnahme des in das Stirnende des Hammerstiels eingeschlagenen Keiles, so dass das Mittelteil in beiden Richtungen zum Hammerstiel nicht mehr verlagerbar ist. Zur Herstellung dieses Mittelteils eignet sich insbesondere Zinkdruckguss mittlerer Härte, welche die erforderliche Festigkeit erbringt. Ein weiterer Vorteil besteht in der kostengünstigeren Herstellung, da sich gegenüber bekannten Hämmern ca. 30% Kosten einsparen lassen.As a result of such a design, a generic hammer of increased utility value is specified. The appropriate choice of material brings casting and safety advantages. The mandrels equipped with undercuts on the circumference can now start from the central part in the same material, so that the head pieces placed on the mandrels are then held securely. Furthermore, the hammer handle is securely fixed. The particularly end of the end of the hammer handle that is particularly at risk is protected in the plug-in sleeve that starts out in one piece from the central part. The total length of the hammer handle is therefore made up of the length of the insert sleeve and the diameter of the middle section. Then the plug-in sleeve forms a double cone through the inner cavity and the middle part through the widening opening, which leads to an extremely firm fit of the hammer handle. The widening opening serves to receive the wedge hammered into the front end of the hammer handle, so that the middle part can no longer be displaced in both directions relative to the hammer handle. Zinc die casting of medium hardness, which provides the required strength, is particularly suitable for producing this middle part. Another advantage is the more cost-effective production, since approx. 30% costs can be saved compared to known hammers.

Es erweist sich ferner von Vorteil, wenn die Dorne zusätzlich zu ihren umfangseitigen Hinterschneidungen in Längsrichtung verlaufende Rinnen besitzen. Dadurch erfahren die Kopfstücke nicht nur eine Festlegung in Achsrichtung der Dorne, sondern sind auch gegen Verdrehen auf den Dornen gesichert. Diese in Längsrichtung verlaufenden Rinnen lassen sich ebenfalls beim Spritzvorgang mit erzeugen.It also proves advantageous if, in addition to their circumferential undercuts, the mandrels have grooves running in the longitudinal direction. As a result, the head pieces are not only fixed in the axial direction of the mandrels, but are also secured against twisting on the mandrels. These channels running in the longitudinal direction can also be produced during the spraying process.

Schliesslich besteht ein vorteilhaftes Merkmal noch darin, wenn sich zwischen verjüngendem Verlauf der Innenhöhlung und erbreiterndem Verlauf der Öffnung ein zylindrischer Zwischenabschnitt erstreckt.Finally, an advantageous feature is when a cylindrical intermediate section extends between the tapering course of the inner cavity and the widening course of the opening.

Diese Massnahme führt zu abstützungstechnischen Vorteilen.This measure leads to advantages in terms of support technology.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Fig. 1 bis 5 erläutert. Es zeigt:

  • Fig. 1 eine Ansicht des Hammers,
  • Fig. 2 eine Ansicht auf das Mittelteil, von der sich erbreiternden Öffnung des Mittelteils her gesehen,
  • Fig. 3 einen Längsschnitt durch den Hammer,
  • Fig. 4 eine Stirnansicht des Mittelteils und
  • Fig. 5 einen anderen Längsschnitt durch das Mittelteil.
An embodiment of the invention is explained below with reference to FIGS. 1 to 5. It shows:
  • 1 is a view of the hammer,
  • 2 is a view of the central part, seen from the widening opening of the central part,
  • 3 shows a longitudinal section through the hammer,
  • Fig. 4 is an end view of the middle part and
  • Fig. 5 shows another longitudinal section through the central part.

Der Hammer weist einen Hammerstiel 1, ein Mittelteil 2 sowie die beiden an das Mittelteil angesetzten Kopfstücke 3 und 4 auf. Das Mittelteil besteht aus Zinkdruckguss mittlerer Härte und ist zylindrisch geformt. Materialeinheitlich gehen von den Stirnflächen 5 des Mittelteils die gegenüber dem Mittelteil querschnittsabgesetzten Dorne 6 aus. Jeder Dorn ist mit vier in gleicher Winkelverteilung in Längsrichtung verlaufenden Rinnen 7 ausgestattet. Ferner bildet jeder Dorn 6, dem Stirnende benachbart, eine ringnutartige Hinterschneidung 8 aus. Sodann ist das Stirnende jedes Dornes 6 mit einer Auflageschräge 9 versehen. Diese dienen zum erleichterten Aufstecken der Kopfstücke 3 und 4, die ihrerseits mit zentralen Sacklöchern 11 bzw. 12 ausgestattet sind. Das Aufziehen der aus Kunststoff bestehenden Köpfe 3, 4 auf die Dorne 6 erfolgt vorzugsweise nach Erwärmen derselben, so dass anschliessend jedes Kopfstück 3, 4 in Achsrichtung sicher festgelegt ist und zusätzlich zufolge der in Längsrichtung verlaufenden Rinnen 7 der Dorne 6 nicht verdreht werden kann.The hammer has a hammer handle 1, a middle part 2 and the two head pieces 3 and 4 attached to the middle part. The middle part is made of die-cast zinc of medium hardness and is cylindrical in shape. The mandrels 6, which are offset in cross-section from the central part, emanate from the end faces 5 of the central part in the same material. Each mandrel is equipped with four channels 7 running in the same angular distribution in the longitudinal direction. Furthermore, each mandrel 6, adjacent to the front end, forms an annular groove-like undercut 8. The front end of each mandrel 6 is then provided with a bevel 9. These serve to facilitate the attachment of the head pieces 3 and 4, which in turn are equipped with central blind holes 11 and 12, respectively. The mounting of the plastic heads 3, 4 on the mandrels 6 is preferably carried out after heating them, so that each head piece 3, 4 is then securely fixed in the axial direction and, in addition, the longitudinal grooves 7 of the mandrels 6 cannot be rotated.

Vom Mittelteil 2 geht materialeinheitlich eine radial ausgerichtete Einsteckbüchse 13 aus, deren Länge nahezu dem Durchmesser des Mittelteils 2 entspricht. Die Innenhöhlung 14 der Einsteckbüchse 13 verläuft etwa bis zur Quermittelebene des Mittelteils verjüngend.From the central part 2, a radially aligned plug-in sleeve 13 starts out, the length of which corresponds almost to the diameter of the central part 2. The inner cavity 14 of the insert sleeve 13 tapers approximately up to the transverse central plane of the central part.

An diesen verjüngenden Verlauf schliesst sich ein zylindrischer Zwischenabschnitt 15 an, der sich seinerseits in eine bis zur Mantelfläche F des Mittelteils 2 reichende und sich in dieser Richtung erbreiternde Öffnung 16 fortsetzt. Sowohl die Innenhöhlung 14, der Zwischenabschnitt 15 als auch die Öffnung 16 sind im Querschnitt oval gestaltet. Der Zwischenabschnitt 15 erstreckt sich dabei symmetrisch zu der durch die Dorne 6 und Mittelteil 2 gehenden Mittelachse.This tapering course is adjoined by a cylindrical intermediate section 15, which in turn continues into an opening 16 which extends to the lateral surface F of the central part 2 and widens in this direction. Both the inner cavity 14, the intermediate section 15 and the opening 16 are oval in cross section. The intermediate section 15 extends symmetrically to the central axis passing through the mandrels 6 and the central part 2.

Der Hammerstiel 1 ist an seinem dem Mittelteil 2 zugekehrten Ende 17 vor dem Einsetzen in das Mittelteil kegelstumpfförmig gestaltet. Nach dem Einsetzen des kegelstumpfförmigen Endes 17 in die Höhlung 14, den Zwischenabschnitt 15 und die Öffnung 16 wird von der Öffnung 16 her ein in Fig. 3 strichpunktiert dargestellter Keil 18 eingetrieben, der das kegelstumpfförmige Ende 17 endseitig aufweitet, so dass sich dieses dem Verlauf der Öffnung anpasst. Hierdurch wird das Ende 17 des Hammerstiels 1 ebenfalls zu einem Doppelkonus geformt, der einen äusserst sicheren Sitz des Mittelteils 2 auf dem Hammerstiel 1 gewährleistet.The hammer handle 1 is at its end 17 facing the middle part 2 before insertion into the middle frustoconical part. After inserting the frustoconical end 17 into the cavity 14, the intermediate section 15 and the opening 16, a wedge 18 shown in dash-dotted lines in FIG adapts to the opening. As a result, the end 17 of the hammer handle 1 is also formed into a double cone, which ensures an extremely secure fit of the middle part 2 on the hammer handle 1.

Die Übergangsstelle 19 zwischen Mittelteil 2 und Einsteckbüchse 13 ist gerundet ausgestaltet, so dass eine Bruchgefahr vermieden ist.The transition point 19 between the middle part 2 and the insert sleeve 13 is rounded, so that a risk of breakage is avoided.

Claims (3)

1. A hammer having a middle part (2) carried by the hammer handle (1) via an inserting-socket (13), and arranged on opposite sides of it headpieces (3, 4) of softer material, for example, of plastics or rubber, where plugs (6) on the middle part (2) equipped with circumferential undercuts (8) enter with a tight fit into recesses (11,12) in the headpieces (3, 4), characterized in that the middle part (2), the plugs (6) and the inserting-socket (13) are injection-moulded as one piece of material in a zinc diecasting, the hollow (14) inside the inserting-socket (13) runs on a taper in about as far as the transverse central plane through the middle part (2) and continues directly into an opening (16) which reaches as far as the surface (F) of the middle part (2) and widens in this direction.
2. A hammer as in claim 1, characterized in that the plugs (6) in addition to their circumferential undercuts (8) have grooves (7) running in the longitudinal direction.
3. A hammer as in claim 1, characterized in that between the inwards tapering trend of the inner hollow (14) and the widening trend of the opening (16) extends a cylindrical intermediate section (15).
EP82105357A 1981-07-04 1982-06-18 Hammer with a central portion carrying the handle inserted therein Expired EP0069261B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105357T ATE12605T1 (en) 1981-07-04 1982-06-18 HAMMER WITH CENTRE SUPPORTED BY THE HAMMER HANDLE BY A RECEPTACLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3126420 1981-07-04
DE3126420A DE3126420A1 (en) 1981-07-04 1981-07-04 HAMMER WITH A MEDIUM PART CARRIED BY THE HAMMERSTICK ON A SOCKET

Publications (2)

Publication Number Publication Date
EP0069261A1 EP0069261A1 (en) 1983-01-12
EP0069261B1 true EP0069261B1 (en) 1985-04-10

Family

ID=6136112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105357A Expired EP0069261B1 (en) 1981-07-04 1982-06-18 Hammer with a central portion carrying the handle inserted therein

Country Status (3)

Country Link
EP (1) EP0069261B1 (en)
AT (1) ATE12605T1 (en)
DE (2) DE3126420A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2754204B1 (en) * 1996-10-04 1998-12-18 Bost Garnache Ind METHOD FOR MANUFACTURING A TOOL BRANCH, AND RANGE OF PLIERS THEREFOR
GB9623021D0 (en) * 1996-11-06 1997-01-08 Cromwell Group Holdings Limite Hammer
US6023997A (en) * 1997-11-21 2000-02-15 Willis; Dane M. Straight line impact hammer
AT411887B (en) * 2002-05-29 2004-07-26 Manfred Mayr TOOL
JP6375871B2 (en) * 2014-10-28 2018-08-22 工機ホールディングス株式会社 Inner cup for centrifuge and centrifuge

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB501310A (en) * 1938-02-16 1939-02-24 Walter Runciman Stephens Improvements relating to hand hammers
US2525429A (en) * 1947-01-30 1950-10-10 Herbert F Seip Tire removing hammer
FR1457609A (en) * 1965-09-21 1966-01-24 Striking tool such as hammer or sledgehammer
GB1199739A (en) * 1967-10-19 1970-07-22 Thor Hammer Company Ltd Improvements in Hammers
GB1311863A (en) * 1969-09-20 1973-03-28 Thro Hammer Co Ltd Hammers
DE2505629A1 (en) * 1975-02-11 1976-08-19 Sieling Paul Fa Fixing of hammer head to plastic shaft - uses nut and bolt to expand plastic shaft inside hammer head
US4165771A (en) * 1978-04-24 1979-08-28 True Temper Corporation Impact tool having a pre-formed fiberglass handle
DE2840476A1 (en) * 1978-09-16 1980-03-20 Gerhard Samulski Shaft fixing for hammer head - has keyhole slot in head wedge part and transverse hole

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Prospekt - Weralit 1/77 *

Also Published As

Publication number Publication date
DE3126420A1 (en) 1983-01-13
DE3262969D1 (en) 1985-05-15
EP0069261A1 (en) 1983-01-12
ATE12605T1 (en) 1985-04-15

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