Improved battery-powered lawn cutting system

A - Human Necessities – 01 – D

Patent

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Details

A01D 34/74 (2006.01) A01D 34/68 (2006.01) A01D 34/73 (2006.01) A01D 34/78 (2006.01) A01D 34/81 (2006.01) A01D 34/82 (2006.01) A01D 69/02 (2006.01)

Patent

CA 2195995

The improved battery-powered lawnmower includes a safety key (48) that is automatically removed when the removable battery (22) is removed, while at the same time blocking the battery recharger receptacle. The lawnmower also includes a control circuit that shuts off the lawnmower upon the occurrence of one or more of several predetermined conditions, including low battery voltage, the encountering of heavy grass for a period of 3 seconds or more, and high motor current that may occur when the cutting blade is jammed. The cutting blade (264) is designed to move through any debris accumulated between the blade ends and the housing sidewall (284) without sacrificing the lift for needed cutting and mulching. The invention also includes a unique height adjustment assembly for adjusting the height of the chassis, a handle attachment that allows the handle to be positively tightened to the lawnmower chassis, and a telescoping groove (76) for the battery's quick connect/disconnect terminals.

Tondeuse à gazon à batteries améliorée, comportant une clé de sécurité (48) qui s'enlève automatiquement lorsque la batterie amovible (22) est enlevée, tout en bloquant en même temps le logement de recharge de batterie. Ladite tondeuse à gazon comporte également un circuit de commande qui coupe la tondeuse lorsque surviennent une ou plusieurs conditions prédéterminées, dont une faible tension de la batterie, la rencontre d'herbe épaisse pour une période de 3 secondes ou plus, et un courant de surcharge dans le moteur qui peut survenir lorsque la lame de coupe est encombrée. La lame de coupe (264) est conçue pour se déplacer à travers tous les débris accumulés entre les extrémités de lame et les parois latérales (284) du carter sans que soit sacrifié l'effet d'aspiration nécessaire pour la coupe et le broyage. La présente invention concerne en outre un ensemble unique permettant de régler la hauteur du châssis, un dispositif de fixation de poignée qui permet de bloquer fermement la poignée sur le châssis de tondeuse, et une rainure conique (76) pour les bornes de connexion/déconnexion rapide de la batterie.

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