GB1537893A - Percussion tools - Google Patents

Percussion tools

Info

Publication number
GB1537893A
GB1537893A GB10064/76A GB1006476A GB1537893A GB 1537893 A GB1537893 A GB 1537893A GB 10064/76 A GB10064/76 A GB 10064/76A GB 1006476 A GB1006476 A GB 1006476A GB 1537893 A GB1537893 A GB 1537893A
Authority
GB
United Kingdom
Prior art keywords
tool
collar
bearing
axial
frictional adhesion
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
GB10064/76A
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.)
DUSS MASCHF
Original Assignee
DUSS MASCHF
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 DUSS MASCHF filed Critical DUSS MASCHF
Publication of GB1537893A publication Critical patent/GB1537893A/en
Expired legal-status Critical Current

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
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0057—Details related to cleaning or cooling the tool or workpiece
    • B25D2217/0065—Use of dust covers
    • B25D2217/0069—Protecting chucks against entering of chip dust

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Repair (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

Axial blows are rhythmically imparted indirectly or directly to the tool (18) by means of a striker (12) oscillating in a reciprocating manner in a cylinder (11). A collar (22) protecting the tool bearing (15) from dust and the like and made of an elastic material interacts in a sealing manner with the tool bearing on the one hand and with the tool (18) on the other hand. In this arrangement, the recess-free circumferential surface of the tool shank is embraced with frictional adhesion by a clamped contact surface, axially displaceable on this circumferential surface, of the sleeve-shaped collar, and the contact surface of the collar (22) interacting with the tool bearing is dimensioned in such a way that there is only slight frictional adhesion or no frictional adhesion. The axial movement transmitted to the collar (22) by the axial percussion movement of the tool (18) is limited by stops (15', 24) of the tool bearing, between which a flange of the collar is captured. A permanent rhythmic deformation of the collar is thereby avoided. <IMAGE>
GB10064/76A 1975-03-13 1976-03-12 Percussion tools Expired GB1537893A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752511045 DE2511045A1 (en) 1975-03-13 1975-03-13 HAND-OPERATED HAMMER WITH A COLLAR TO PROTECT THE TOOL STORAGE FROM DUST

Publications (1)

Publication Number Publication Date
GB1537893A true GB1537893A (en) 1979-01-10

Family

ID=5941317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10064/76A Expired GB1537893A (en) 1975-03-13 1976-03-12 Percussion tools

Country Status (5)

Country Link
CH (1) CH612872A5 (en)
DE (1) DE2511045A1 (en)
FR (1) FR2303646A1 (en)
GB (1) GB1537893A (en)
NL (1) NL7602457A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844109A1 (en) * 1978-10-10 1980-04-24 Bosch Gmbh Robert HAND MACHINE, IN PARTICULAR DRILLING AND / OR HAMMER
US4247122A (en) * 1979-01-31 1981-01-27 Black & Decker Inc. Dust sealing mechanism
DE4403449C2 (en) * 1994-02-04 1997-11-20 Freudenberg Carl Fa Sealing arrangement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1493768A (en) * 1920-08-28 1924-05-13 Rice Portable Rock Drill Corp Dustguard for percussion machines
US1524251A (en) * 1922-10-02 1925-01-27 Ingersoll Rand Co Retainer for percussive tools
GB292606A (en) * 1927-06-23 1929-03-07 Pierre Camille Desmul Improvements in pneumatic tools
FR1160284A (en) * 1956-08-23 1958-07-10 Gelenkwellenbau Gmbh Sealing device for articulated shaft journals with length compensation
CH480577A (en) * 1968-03-28 1969-10-31 Escher Wyss Ag Throttle valve for pipelines, in particular for water power plants

Also Published As

Publication number Publication date
NL7602457A (en) 1976-09-15
CH612872A5 (en) 1979-08-31
FR2303646B1 (en) 1980-08-08
FR2303646A1 (en) 1976-10-08
DE2511045A1 (en) 1976-09-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee