A - Human Necessities – 01 – G
Patent
A - Human Necessities
01
G
A01G 3/06 (2006.01) A01D 34/416 (2006.01) A01D 34/73 (2006.01)
Patent
CA 2220321
The head comprises two covers (3,5) connected together and an intermediate ring (7), these defining a volume for containing at least one cutting cord (F). The intermediate ring (7) comprises spring means (7A, 7B, 7C) that lock said intermediate ring (7) angularly to at least one of said covers in such a way as to prevent relative rotation between the intermediate ring and the cover in the direction in which the ring tends to be rotated by the resistive force (Ft) acting on the portions of cutting cord projecting from the head (1) during the rotation of the latter; at the same time the spring means permit relative rotation in the opposite direction by torsionally releasing the intermediate ring from said cover, by the action of the traction exerted on said projecting ends of the cutting cords (F).
Tête de coupe constituée de deux couvercles (3, 5) reliés et d'un anneau intermédiaire (7), lesquels définissent un volume destiné à abriter au moins un fil (F). L'anneau intermédiaire (7) comporte des ressorts (7A, 7B, 7C), qui le bloquent en angle par rapport à au moins un des couvercles, ce qui l'empêche de tourner par rapport au couvercle dans la direction dans laquelle l'anneau a tendance à tourner sous l'influence de la force résistive (Ft) qui agit sur les parties du fil qui dépassent de la tête (1) lorsqu'elle tourne. Les ressorts permettent en outre la rotation relative dans la direction opposée en relâchant par torsion l'anneau du couvercle en raison de la traction exercée sur les extrémités des fils (F).
Calcinai Maria Rosa
Fetherstonhaugh & Co.
LandOfFree
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