IP Library Granted Patent US 11,192,271
Granted Patent B2
US 11,192,271 · App. 16/635,407 · Granted Dec 7, 2021

Chainsaw system

Inventors: Jack Roden (Stowmarket, GB); Attila Nagy (Miskolc-Szirma, HU); Richard Wilkins (Ipswich, GB); Richard Poole (Bury St. Edmunds, GB); Csaba Szmutko (Miskolc, HU); John Lister (Bury St. Edmunds, GB)
Assignee: Robert Bosch GmbH
B27B17/02B27B17/14
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Quick Facts
Patent No.
US 11,192,271
App. No.
16/635,407
Granted
Dec 7, 2021
Kind
B2
Abstract

A chainsaw system includes a chainsaw and a saw blade module, which has a cutting chain and at least one guide unit for forming a guide for at least one part of the cutting chain. The chainsaw system further includes at least one coupling unit for coupling the saw blade module to the chainsaw and at least one release unit that has at least one fastening element and is provided in order to provide tool-free decoupling of the at least one saw blade module which is coupled by means of the coupling unit.

Claims (30)

1. A chainsaw system, comprising:

a chainsaw;

a saw blade module comprising a cutting strand and at least one guide unit configured to guide at least a part of the cutting strand;

a coupling unit configured to releasably couple the saw blade module to the chainsaw; and

a release unit mounted on the chainsaw and including an actuating element mounted on the chainsaw and rotatable about an axis extending transversely through the chainsaw and configured to decouple, without use of tools, the saw blade module from the chainsaw.

2. The chainsaw system as claimed in claim 1 , further comprising:

at least one blocking unit mounted on the chainsaw and configured at least to prevent the saw blade module, coupled by the coupling unit to the chainsaw, from being decoupled by the release unit while the chainsaw is in operation.

3. The chainsaw system as claimed in claim 1 , wherein the chainsaw has at least one recoil safeguard element configured to prevent, at least to a large extent, a manual actuation of the actuating element of the release unit while the chainsaw is in operation.

4. The chainsaw system as claimed in claim 1 , wherein the coupling unit has at least one locking unit and at least one locking element configured to latch within the at least one locking unit.

5. The chainsaw system as claimed in claim 4 , wherein the at least one locking element has at least one locking head, and the locking unit has at least one locking element is configured to engage behind the at least one locking head, at least in a locking state.

6. The chainsaw system as claimed in claim 4 , wherein the at least one locking unit has at least one magnet element configured, in at least one operating state, to exert a holding force upon the at least one locking element.

7. The chainsaw system as claimed in claim 1 , wherein the coupling unit has at least one positioning bolt configured to at least one of align and orient the saw blade module relative to the chainsaw.

8. The chainsaw system as claimed in claim 1 , wherein the chainsaw has at least one receiving recess configured to at least partially receive the saw blade module in a mounted state.

9. A chainsaw system, comprising:

a chainsaw having at least one release unit and at least one blocking unit;

a saw blade module comprising a cutting strand and at least one guide unit configured to guide at least a part of the cutting strand; and

at least one coupling unit configured to couple the saw blade module to the chainsaw,

wherein the at least one release unit includes at least one actuating element, the at least one release unit configured to decouple, without use of tools, the saw blade module from the coupling unit,

wherein the at least one blocking unit is configured at least to prevent the saw blade module, coupled to the chainsaw by the at least one coupling unit, from being decoupled by the at least one release unit while the chainsaw is in operation, and

wherein the at least one blocking unit has at least one decoupling blocking element configured to block an actuation of the at least one actuating element while the chainsaw is in operation.

10. The chainsaw system as claimed in claim 9 , wherein:

the at least one blocking unit has at least one transmission element configured to operatively couple an operating switch of the chainsaw to the at least one decoupling blocking element, and

the at least one transmission element is configured to transmit a movement of the operating switch to the at least one decoupling blocking element.

11. A chainsaw system, comprising:

a chainsaw having at least one release unit and at least one blocking unit;

a saw blade module comprising a cutting strand and at least one guide unit configured to guide at least a part of the cutting strand; and

at least one coupling unit configured to couple the saw blade module to the chainsaw,

wherein the at least one release unit includes at least one actuating element, the at least one release unit configured to decouple, without use of tools, the saw blade module from the coupling unit, and

wherein the at least one blocking unit is configured at least to prevent the chainsaw from being put into operation while the at least one release unit is in a decoupling mode.

12. The chainsaw system as claimed in claim 11 , wherein the at least one blocking unit has at least one operation blocking element configured to block an actuation of an operating switch of the chainsaw while the at least one release unit is in the decoupling mode.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 22, 2021
From: RODEN, JACK; NAGY, ATTILA; WILKINS, RICHARD; POOLE, RICHARD; SZMUTKO, CSABA; LISTER, JOHN
To: ROBERT BOSCH GMBH
Reel/Frame 056023/0282 →
Priority Claims (1)
DE 10 2017 216 870.6 · Sep 25, 2017 · national
Continuity (1)
Related Publication 20210094202A1 · Apr 1, 2021
Cited By (2)
US 12,193,684 US 12,649,255