Power tool separation device

Patent metadata

Field	Value
Publication number	US-10052785-B2
Application number	US-201214001585-A
Country	US
Kind code	B2
Filing date	Mar 2, 2012
Priority date	Mar 3, 2011
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

The disclosure relates to a power tool separation device, in particular a hand-held power tool separation device, comprising at least one cutting unit which comprises at least two interconnected cutter support elements. At least two cutter support elements are interconnected by means of at least one connecting element of the cutting unit, and the connecting element is essentially flush with at least one outer surface of the at least two cutter support elements.

First claim

The invention claimed is:

1. A power tool separation device comprising:
at least one cutting assembly having at least two cutter support elements adjacent ones of the at least two cutter support elements directly connected to each other, each cutter support element including a cutting element integral therewith, the cutting elements of the at least two cutter support elements defining a cutting plane, and
at least one guide unit configured to receive the cutting assembly,
wherein adjacent cutter support elements of the at least two cutter support elements are directly connected by at least one connecting element, said connecting element formed as a pin in one piece with and projecting from one of the adjacent cutter support elements transverse to the cutting plane and received within an opening defined in the other of the adjacent cutter support elements, the pin terminating at least substantially flush with at least one outer face of the other of the adjacent cutter support elements,
wherein the entire connecting element is a porous structure, and
wherein the connecting element is in contact with and guided by said guide unit.

2. The power tool separation device as claimed in claim 1 , wherein at least one of the at least two cutter support elements has at least one transverse securing element configured to at least largely prevent a transverse movement of the at least two cutter support elements relative to one another in a coupled state of the at least two cutter support elements.

3. The power tool separation device as claimed in claim 2 , wherein the at least one transverse securing element is formed integrally on the at least one of the at least two cutter support elements by a stamping method.

4. The power tool separation device as claimed in claim 1 , wherein at least one of the at least two cutter support elements has at least one segment guide element configured to delimit a movement of the at least one of the at least two cutter support elements, in a state arranged in a guide unit, considered in a direction remote from the guide unit, at least along a direction running at least substantially parallel to a cutting plane of the cutting assembly.

5. The power tool separation device as claimed in claim 1 , wherein the at least one guide unit includes at least one torque transmission element mounted at least in part in the at least one guide unit.

6. The power tool separation device as claimed in claim 5 , wherein:
at least one of the at least two cutter support elements, on a side of the cutter support element facing towards the torque transmission element, has at least one recess, and
in at least one operating state, the torque transmission element engages the at least one recess to drive the cutting assembly.

7. The power tool separation device as claimed in claim 5 , wherein at least one of the at least two cutter support elements is formed at least substantially in a circular-arc-shaped manner on a side of the cutter support element facing towards the torque transmission element.

8. A portable power tool comprising:
a coupling device; and
a power tool separation device having at least one cutting assembly having at least two interconnected cutter support elements, each cutter support element including a cutting element integral therewith, the cutting elements of the at least two cutter support elements defining a cutting plane, and at least one guide unit configured to receive the cutting assembly,
wherein adjacent cutter support elements of the at least two cutter support elements are directly connected by at least one connecting element, said connecting element formed as a pin in one piece with and projecting from one of the adjacent cutter support elements transverse to the cutting plane and received within an opening defined in the other of the adjacent cutter support elements, the pin terminating at least substantially flush with at least one outer face of the other of the adjacent cutter support elements,
wherein the connecting element is in contact with and guided by said guide unit,
wherein the entire connecting element is a porous structure, and
wherein the coupling device is coupled to the at least one guide unit by at least one of a form-locked coupling and a forced-locked coupling.

9. A power tool system comprising:
a portable power tool having a coupling device; and
a power tool separation device having at least one cutting assembly having at least two interconnected cutter support elements, each cutter support element including a cutting element integral therewith, the cutting elements of the at least two cutter support elements defining a cutting plane, and at least one guide unit configured to receive the cutting assembly,
wherein adjacent cutter support elements of the at least two cutter support elements are directly connected by at least one connecting element, said connecting element formed as a pin in one piece with and projecting from one of the adjacent cutter support elements transverse to the cutting plane and received within an opening defined in the other of the adjacent cutter support elements, the pin terminating at least substantially flush with at least one outer face of the other of the adjacent cutter support elements,
wherein the connecting element is in contact with and guided by said guide unit,
wherein the entire connecting element is a porous structure, and
wherein the coupling device is coupled to the at least one guide unit by at least one of a form-locked coupling and a forced-locked coupling.

Assignees

• Fuchs Rudolf
• Grulich Petr
• Engelfried Uwe
• Bosch Gmbh Robert

Inventors

• Fuchs Rudolf
• Grulich Petr
• Engelfried Uwe

Classifications

• B27B17/02 Primary

  Chain saws equipped with guide bar (B27B17/06 takes precedence) · CPC title

• B27B33/148 Primary

  with means permitting replacement of cutter elements · CPC title

• B27B33/14

  Saw chains {(saw chains for slotting or mortising devices B27F5/08)} · CPC title

• B27B33/147

  with incorporated lubricating means · CPC title

• Y10T83/913

  With means permitting removal of cutter element · CPC title