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1. WO2022002759 - SAFETY BRAKES FOR CIRCULAR SAW BLADES, CIRCULAR SAWS THAT INCLUDE THE SAFETY BRAKES, AND METHODS OF OPERATING CIRCULAR SAWS

Publication Number WO/2022/002759
Publication Date 06.01.2022
International Application No. PCT/EP2021/067386
International Filing Date 24.06.2021
IPC
B27B 5/38 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
5Sawing machines working with circular saw blades; Components or equipment therefor
29Details; Component parts; Accessories
38Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing
F16D 55/46 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
55Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
24with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
46with self-tightening action
F16D 65/18 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
65Parts or details of brakes
14Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
16arranged in or on the brake
18adapted for drawing members together
Applicants
  • FESTOOL GMBH [DE]/[DE]
Inventors
  • BURKE, Jeremy
  • SCHOCK, Christian
  • SCHMID, Markus
  • KÜBELER, Matthias Dennis
  • THEURER, Felix
Agents
  • HERRMANN, Jochen
Priority Data
63/046,92401.07.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SAFETY BRAKES FOR CIRCULAR SAW BLADES, CIRCULAR SAWS THAT INCLUDE THE SAFETY BRAKES, AND METHODS OF OPERATING CIRCULAR SAWS
(FR) FREINS DE SÉCURITÉ POUR LAMES DE SCIE CIRCULAIRES, SCIES CIRCULAIRES QUI COMPRENNENT LES FREINS DE SÉCURITÉ ET PROCÉDÉS DE FONCTIONNEMENT DE SCIES CIRCULAIRES
Abstract
(EN) Safety brakes (100) for circular saw blades (40), circular saws (10) that include the safety brakes (100), and methods of operating circular saws (10) are disclosed herein. The safety brakes (100) include a sensor assembly (110), a brake assembly (120), and an actuator assembly (160). The sensor assembly (110) is configured to detect an actuation parameter and to generate a trigger signal responsive to detection of the actuation parameter. The brake assembly (120) includes a brake cam (130) and a brake pad (190). The brake cam (130) is configured to selectively transition between a disengaged configuration and an engaged configuration and is configured to operatively engage a planar side surface of the circular saw blade (40). The brake pad (190) includes a pad friction material (192) and is positioned such that the pad friction material (192) faces toward the brake cam (130). The actuator assembly (160) is configured to selectively transition the brake cam (130) from the disengaged configuration to the engaged configuration responsive to receipt of the trigger signal.
(FR) Sont divulgués des freins de sécurité (100) pour des lames de scie circulaires (40), des scies circulaires (10) qui comprennent les freins de sécurité (100) et des procédés de fonctionnement de scies circulaires (10). Les freins de sécurité (100) comprennent un ensemble capteur (110), un ensemble frein (120) et un ensemble actionneur (160). L'ensemble capteur (110) est conçu pour détecter un paramètre d'actionnement et pour générer un signal de déclenchement en réponse à la détection du paramètre d'actionnement. L'ensemble frein (120) comprend une came de frein (130) et une plaquette de frein (190). La came de frein (130) est conçue pour passer de manière sélective entre une configuration séparée et une configuration en prise et est configurée pour venir en prise fonctionnelle avec une surface latérale plane de la lame de scie circulaire (40). La plaquette de frein (190) comprend un matériau de frottement de plaquette (192) et est positionnée de telle sorte que le matériau de frottement de plaquette (192) soit tourné vers la came de frein (130). L'ensemble actionneur (160) est conçu pour faire passer sélectivement la came de frein (130) de la configuration séparée à la configuration en prise en réponse à la réception du signal de déclenchement.
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