FR2556643A1 - Safety electronic contact detector - Google Patents

Safety electronic contact detector Download PDF

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Publication number
FR2556643A1
FR2556643A1 FR8320368A FR8320368A FR2556643A1 FR 2556643 A1 FR2556643 A1 FR 2556643A1 FR 8320368 A FR8320368 A FR 8320368A FR 8320368 A FR8320368 A FR 8320368A FR 2556643 A1 FR2556643 A1 FR 2556643A1
Authority
FR
France
Prior art keywords
contact
electronic
chain
characterized
according
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Withdrawn
Application number
FR8320368A
Other languages
French (fr)
Original Assignee
Stempniakowski Tonny
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 Stempniakowski Tonny filed Critical Stempniakowski Tonny
Priority to FR8320368A priority Critical patent/FR2556643A1/en
Priority claimed from FR8404812A external-priority patent/FR2570017A2/en
Publication of FR2556643A1 publication Critical patent/FR2556643A1/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16PSAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00Chain saws; Equipment therefor
    • B27B17/08Drives or gearings; Devices for swivelling or tilting the chain saw
    • B27B17/083Devices for arresting movement of the saw chain

Abstract

The invention relates to a safety electronic detector ensuring immediate triggering of the chain brake of a chain saw as soon as it comes into accidental contact with the user. It is characterised in that it comprises an electromagnet 10 for retracting a pin 14 allowing triggering of the chain brake driven by an electronic circuit 16 detecting the infinitesimal passage of current between the insulated tubular metal handle 1 of the chain saw unit 3 and the chain 8 via the body of the user, the whole being supplied with power by the magnetic flywheel of the chain saw, the current being rectified and stabilised by the electronic system 15. Application to the safety of forestry and scrub clearance equipment. <IMAGE>

Description

L'invention se rapporte à un détecteur électronique de contact assurant le déclenchement immédiat du frein de channe d'une tronçonneuse dès son contact accidentel avec l'utilisateur. The invention relates to an electronic sensor contact ensuring the immediate release of the brake Channe a chainsaw from his accidental contact with the user.

Les machines sont actuellement pourvues d'un système de blocage de channe manuel ou automatique suite à un choc violent sur la manette de frein. The machines are currently provided with a manual channe lock system or automatic following a violent shock to the brake lever.

el is, dans le cas où l'utilisateur entre en contact avec la channe suite à un faux mouvement ou à une chute, celle-ci pénètre aisément dans ses chairs avant même qu'il ait eu le temps ou la possibilité de réagir. el is, if the user comes into contact with the Channe following a false movement or a fall, it easily penetrates her flesh before he even had time or opportunity to respond.

Les conséquences d'un tel accident sont bien souvent graves à cause de la facilité de pénétration, provoquant de très profondes entailles ou sections de membres. The consequences of such an accident are often severe because of the ease of penetration, causing very deep cuts or members sections.

le résultat de l'invention est l'annulation des conséquences graves citées plus haut ; the result of the invention is the cancellation of the serious consequences mentioned above; en effet un détecteur électronique permet immédiatement le déclenchement du blocage de chatne dès le contact de celle-ci avec le corps de l'utilisateur, sans que celui-ci ait eu à intervenir d'une quelconque façon. Indeed, an electronic detector immediately allows tripping chatne of blocking upon contact thereof with the body of the user without the latter has had to intervene in any way.

L'invention sera bien comprise à l'aide de la description faite en regard du dessin ci-annexé qui représente sehématique ment : The invention will be better understood using the description given in light of the accompanying drawing which shows sehématique ment:
- ligure 1 : vue d'ensemble de la tronçonneuse, - Ligurian 1: Overview of the saw,
figure 2 : vue du déclencheur automatique du frein de channe, Figure 2: view of the automatic release of the channe brake,
- figure 3 : vue du déclencheur commandé par l'électroaimant, - Figure 3: view of the shutter controlled by the electromagnet,
- figure 4 : exemple d'un schéma électronique du détecteur. - Figure 4: example of an electronic diagram of the detector.

En se rapportant aux dessins on voit que la poignée tubulaire 1 peut etre isolée du bloc tronçonneuse 3 par des pattes plastiques et rondelles isolantes 2. Referring to the drawings it is seen that the tubular handle 1 can be isolated from the saw unit 3 by plastic legs and two insulating washers.

étant métallique, la poignée peut etre reliée par le fil électrique 18 du détecteur électronique 16. being made of metal, the handle can be connected by the electric wire 18 of the electronic sensor 16.

La chaîne 8, le guide de chaîne 7, sont bien évidemment relies à la masse 19 donc au potentiel négatif "0". The channel 8, channel 7 of the guide are of course subsequently assembled to ground 19 so the negative potential "0".

Le courant du volant magnétique de la tronçonneuse arrive en 17, il est redressé et stabilisé par l'ensemble 15. The current of the flywheel of the saw arrives at 17, it is rectified and stabilized by the assembly 15.

La poignée tubulaire 1 est légèrement au potentiel posai tif par la résistance 20, donc la sortie de la porte NAND 21 est au potentiel "0", le transistor 22 est donc bloqué. The tubular handle 1 is slightly put down tif potential by the resistor 20, so the output of NAND gate 21 is at the potential "0", the transistor 22 is therefore off.

Si l'utilisateur, tenant naturellement la poignée 1, entre en contact accidentellement avec la chaîne 8 son corps sera au potentiel "o" de la masse 19 de la machine, donc l'entrée de la porte NAND 21 le sera également. If the user naturally holding the handle 1 accidentally come into contact with the chain 8, his body will be the potential "o" of the mass 19 of the machine, so the input of the NAND gate 21 will be too.

Sa sortie basculera au potentiel positif, rendant conducteur le transistor 22 qui, laissant passer le courant, excitera l'électro-aimant 10 par le fil 12. Its output will switch to the positive potential, rendering the transistor 22 which, passing the current, excite the electromagnet 10 by the wire 12.

L'axe 14 de celui-ci se rétractera, permettant la détente brusque du ressort 23. The axis 14 thereof will retract, allowing the sudden expansion of the spring 23.

La chaîne s'arrente donc net. The chain therefore Arrente net.

Si un relais 9 est prévu, une rupture de contact 13 s'effectuera, coupant l'alimentation de la bobine d'allumage et arrotant le moteur, dans le cas où le contact avec la chaîne est suffisamment prolongé. If a relay 9 is provided a break contact 13 will be carried out, cutting power to the ignition coil and arrotant the engine, in the case where contact with the string is sufficiently prolonged.

le réarmement de la machine donc la libération de la chatne 8 se fera tout simplement par action sur la poignée 5, l'axe 14 de l'électro-aimant 10 reprenant sa position initiale grâce au petit ressort 11. the resetting of the machine, therefore the release of the chatne 8 will be done simply by operating the handle 5, the axis 14 of the solenoid 10 returning to its initial position by the small spring 11.

En fait l'axe 14 de l'électro-aimant 10 remplace la butée d'arrêt d'origine 6 (figure 2). In fact the pin 14 of the electromagnet 10 replaces the original stopper 6 (Figure 2).

Selon un choix différent des composants électroniques, I'alimentation du détecteur de contact peut être un courant non traité, donc alternatif, venant du volant magnétique. According to a different choice of electronic components, I'alimentation the contact detector may be an untreated stream, so alternative, from the flywheel.

Claims (7)

REVENDICATIONS
1. Détecteur électronique 16 de contact assurant l'ar- rêt immédiat de la chaîne 8 de la tronçonneuse dès son contact avec l'utilisateur, caractérisé en ce qu'il comprend un électro-aimant 10 à rétraction d'axe 14 permettant le déclenchement du frein de la chaîne 8, piloté par un circuit électronique 16 décelant l'infime passage de courant entre la poignée métallique 1 isolée du bloc tronçonneuse 3 et la chaîne 8 par l'intermédiaire du corps de l'utilisateurs l'en- semble étant alimenté par le volant magnétique de la tronçonneuse, le courant étant redressé et stabilisé par le système élestronique 15. 1. Electronic sensor 16 contact ensuring immediate ar- RET of the chain 8 of the saw from its contact with the user, characterized in that it comprises an electromagnet 10 to retract shaft 14 for triggering the brake of the chain 8, controlled by an electronic circuit 16 décelant the minute current flow between the wire handle of the chain saw 1 isolated block 3 and the chain 8 through the body of the users en- seems being powered by the magnetic wheel of the saw, the stream being rectified and stabilized by the élestronique 15 system.
2. Détecteur électronique de contact, selon la revendication 1, caractérisé en ce que c'est l'infime passage de courant circulant de la partie dangereuse de l'appareil, par exemple la chaîne 8, par le corps de l'utilisateur et rejoi- gnant la partie en contact permanent avec l'utilisateur, comme par exemple la poignée tubulaire 1 et/ou la poignée arrière 4, qui sert de point de repère au système électronique pour le déclenchement de la sécurité comme le blocage de chaîne. 2. Electronic contact detector according to claim 1, characterized in that it is the very small current flow circulating from the dangerous part of the apparatus, for example the chain 8 with the body of the user and rejoi - Gnant the part in permanent contact with the user, such as the tubular handle 1 and / or the rear handle 4, which serves as the electronic system landmark for triggering safety as the chain block.
3. Détecteur électronique de contact, selon les revendications 1 et 2, caractérisé en ce que le système électro- nique 16, en cas de détection de contact, alimente un électro-aimant 10 à axe retractable 14 ou fonctionnant en mode inverse, selon l'adaptation mécanique. 3. Electronic contact detector according to claims 1 and 2, characterized in that the electronic system 16, in case of contact detection, feeds a solenoid 10 with Pull axis 14 or operating in reverse mode, depending on mechanical adaptation.
4. Détecteur électronique de contact, selon les reven dictions 1 à 3, caractérisé en ce que c'est le courant produit par le volant magnétique de la tronçonneuse qui alimente le système électronique 16 du détecteur ainsi que l'électro- aimant 10. 4. contacting electronic sensor, according to reven diction 1 to 3, characterized in that it is the current produced by the flywheel of the saw which supplies the electronic system of the detector 16 and the electromagnet 10.
5. Détecteur électronique de contact, selon l'ensemble des revendi- cations 1 à 4, caractérisé en ce que lors du déclenchement électronique du blocage de chaîne 8 une rupture de contact 13 peut être adjointe, pilotée par un relais 9, coupant l'ali- tentation de la bobine de la tronçonneuse, arrêtant le moteur. 5. Electronic sensor contact, according to all cations revendi- 1 to 4, characterized in that during the electronic triggering of the blocking chain 8 a break contact 13 can be Assistant, controlled by a relay 9, cutting the Ali temptation of the coil of the chainsaw, stopping the engine.
l'ensemble all
6. Détecteur électronique de contact, selon / desrevendications 1 à 5, caractérisé en ce que le réarmement de la machine se fait comme auparavant par action sur la poignée 5, l'axe 14 de l'électro-aimant 10 poussé par un petit ressort 11 reprenant sa position initiale. 6. Electronic sensor contact, according to / desrevendications 1 to 5, characterized in that the resetting of the machine is done as before by operating the handle 5, the axis 14 of the electromagnet 10 driven by a small spring 11 returning to its original position.
l'ensemble all
7. Détecteur électronique de contact, selon /des revendications 1 à 6, caractérisé en ce que selon un choix différent des composants électroniques l'alimentation du détecteur de contact peut etre un courant non traité, donc alternatif, venant du volant magnétique. 7. Electronic sensor contact, according to / claims 1 to 6, characterized in that according to a different selection of electronic components contact the power detector can be an untreated stream, so alternative, from the flywheel.
FR8320368A 1983-12-20 1983-12-20 Safety electronic contact detector Withdrawn FR2556643A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8320368A FR2556643A1 (en) 1983-12-20 1983-12-20 Safety electronic contact detector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8320368A FR2556643A1 (en) 1983-12-20 1983-12-20 Safety electronic contact detector
FR8404812A FR2570017A2 (en) 1983-12-20 1984-03-28 Electronic safety contact detector

Publications (1)

Publication Number Publication Date
FR2556643A1 true FR2556643A1 (en) 1985-06-21

Family

ID=9295343

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8320368A Withdrawn FR2556643A1 (en) 1983-12-20 1983-12-20 Safety electronic contact detector

Country Status (1)

Country Link
FR (1) FR2556643A1 (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882844A (en) * 1988-12-05 1989-11-28 Michael Stokan Chain saw safety brake apparatus
EP0544483A1 (en) * 1991-11-28 1993-06-02 Black &amp; Decker Inc. Electric tool with gripping sensors
WO1996022175A2 (en) * 1995-01-20 1996-07-25 Iradj Hessabi Safety device for electrically driven hand tools, in particular circular and compass saws
WO1996037350A1 (en) * 1995-05-24 1996-11-28 The New Zealand Logging Industry Research Association Incorporated Improvements in safety equipment for motor driven saws
EP1234285A2 (en) * 1999-10-01 2002-08-28 SD3, Llc Safety systems for power equipment
US6813983B2 (en) 2000-09-29 2004-11-09 Sd3, Llc Power saw with improved safety system
US6826988B2 (en) 2000-09-29 2004-12-07 Sd3, Llc Miter saw with improved safety system
WO2005099981A1 (en) * 2004-04-14 2005-10-27 Werner Harrer Chain saw
US7640835B2 (en) 2000-08-14 2010-01-05 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US7707920B2 (en) 2003-12-31 2010-05-04 Sd3, Llc Table saws with safety systems
US7712403B2 (en) 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US7789002B2 (en) 2000-09-29 2010-09-07 Sd3, Llc Table saw with improved safety system
US7788999B2 (en) 1999-10-01 2010-09-07 Sd3, Llc Brake mechanism for power equipment
US7827890B2 (en) 2004-01-29 2010-11-09 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
ITMI20101567A1 (en) * 2010-08-24 2012-02-25 Redcap Technology S R L to actuation of locking device commanded by the portable cutting tools and relative cutting tool
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US8413559B2 (en) 2000-08-14 2013-04-09 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US10118308B2 (en) 2013-10-17 2018-11-06 Sawstop Holding Llc Systems to mount and index riving knives and spreaders in table saws

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530863A (en) * 1976-05-25 1978-11-01 Yoneda K Band knife cutting apparatus with emergency stopping system
US4302879A (en) * 1978-09-18 1981-12-01 Beaird-Poulan Division Emerson Electric Co. Safety braking apparatus for portable chain saw

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530863A (en) * 1976-05-25 1978-11-01 Yoneda K Band knife cutting apparatus with emergency stopping system
US4302879A (en) * 1978-09-18 1981-12-01 Beaird-Poulan Division Emerson Electric Co. Safety braking apparatus for portable chain saw

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882844A (en) * 1988-12-05 1989-11-28 Michael Stokan Chain saw safety brake apparatus
EP0544483A1 (en) * 1991-11-28 1993-06-02 Black &amp; Decker Inc. Electric tool with gripping sensors
WO1996022175A2 (en) * 1995-01-20 1996-07-25 Iradj Hessabi Safety device for electrically driven hand tools, in particular circular and compass saws
WO1996022175A3 (en) * 1995-01-20 1996-10-24 Iradj Hessabi Safety device for electrically driven hand tools, in particular circular and compass saws
WO1996037350A1 (en) * 1995-05-24 1996-11-28 The New Zealand Logging Industry Research Association Incorporated Improvements in safety equipment for motor driven saws
US8408106B2 (en) 1999-10-01 2013-04-02 Sd3, Llc Method of operating power equipment with detection and reaction systems
EP1234285A2 (en) * 1999-10-01 2002-08-28 SD3, Llc Safety systems for power equipment
US9969014B2 (en) 1999-10-01 2018-05-15 Sawstop Holding Llc Power equipment with detection and reaction systems
US9925683B2 (en) 1999-10-01 2018-03-27 Sawstop Holding Llc Table saws
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
EP1234285A4 (en) * 1999-10-01 2011-02-23 Sd3 Llc Safety systems for power equipment
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US9522476B2 (en) 1999-10-01 2016-12-20 Sd3, Llc Power equipment with detection and reaction systems
US10335972B2 (en) 1999-10-01 2019-07-02 Sawstop Holding Llc Table Saws
US8196499B2 (en) 1999-10-01 2012-06-12 Sd3, Llc Power equipment with detection and reaction systems
US7788999B2 (en) 1999-10-01 2010-09-07 Sd3, Llc Brake mechanism for power equipment
US8291797B2 (en) 1999-10-01 2012-10-23 Sd3, Llc Table saw with improved safety system
US9038515B2 (en) 2000-08-14 2015-05-26 Sd3, Llc Logic control for fast-acting safety system
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US8413559B2 (en) 2000-08-14 2013-04-09 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US8522655B2 (en) 2000-08-14 2013-09-03 Sd3, Llc Logic control for fast-acting safety system
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US7640835B2 (en) 2000-08-14 2010-01-05 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US8191450B2 (en) 2000-08-14 2012-06-05 Sd3, Llc Power equipment with detection and reaction systems
US8006595B2 (en) 2000-08-14 2011-08-30 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
US8151675B2 (en) 2000-08-14 2012-04-10 Sd3, Llc Logic control for fast-acting safety system
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US6826988B2 (en) 2000-09-29 2004-12-07 Sd3, Llc Miter saw with improved safety system
US7789002B2 (en) 2000-09-29 2010-09-07 Sd3, Llc Table saw with improved safety system
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US6813983B2 (en) 2000-09-29 2004-11-09 Sd3, Llc Power saw with improved safety system
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US7712403B2 (en) 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US7866239B2 (en) 2003-12-31 2011-01-11 Sd3, Llc Elevation mechanism for table saws
US7707920B2 (en) 2003-12-31 2010-05-04 Sd3, Llc Table saws with safety systems
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US8498732B2 (en) 2003-12-31 2013-07-30 Sd3, Llc Detection systems for power equipment
US9623498B2 (en) 2003-12-31 2017-04-18 Sd3, Llc Table saws
US8122807B2 (en) 2003-12-31 2012-02-28 Sd3, Llc Table saws with safety systems
US7827893B2 (en) 2003-12-31 2010-11-09 Sd3, Llc Elevation mechanism for table saws
US8489223B2 (en) 2003-12-31 2013-07-16 Sd3, Llc Detection systems for power equipment
US8087438B2 (en) 2003-12-31 2012-01-03 Sd3, Llc Detection systems for power equipment
US8505424B2 (en) 2004-01-29 2013-08-13 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US10052786B2 (en) 2004-01-29 2018-08-21 Sawstop Holding Llc Table saws with safety systems and systems to mount and index attachments
US7827890B2 (en) 2004-01-29 2010-11-09 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
WO2005099981A1 (en) * 2004-04-14 2005-10-27 Werner Harrer Chain saw
WO2012025458A1 (en) * 2010-08-24 2012-03-01 Redcap Technology S.R.L. Braking arrangement with controlled actuation for portable cutting tools and cutting tool therefor
ITMI20101567A1 (en) * 2010-08-24 2012-02-25 Redcap Technology S R L to actuation of locking device commanded by the portable cutting tools and relative cutting tool
US10118308B2 (en) 2013-10-17 2018-11-06 Sawstop Holding Llc Systems to mount and index riving knives and spreaders in table saws

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