Magnetic safety switch device for food processor
AssigneeRobot-Coupe, S.A.
InventorsMarcel Coggiola, Patrick Ribassin, Manuel Gallardo, Jean Meyer, Alain J. L. Bertin
Life of this patent
Estimating the term…
Abstract
A magnetic safety device, inter alia for a food processor, wherein, when a cover (10) is locked on a bowl (3), which in turn is locked to a base (1), a permanent magnet (12) is brought towards a magnetically controlled working contact (11) connected in series in the supply circuit of a motor (2).
Claims15
A magnetic safety device in combination with a food processor comprising a base, an electric motor enclosed by the base, an electric control circuit for the motor, a working vessel including a bowl and a cover removably locked on the bowl, an means for locking the bowl on the base in a working position, the safety device comprising a magnetically controlled working contact mounted inside the base and connected to the electric control circuit, a duct integral with the bowl and extending along a generatrix of the bowl, said duct containing a rod made of ferromagnetic material extending fixedly therein, such that when the bowl is locked on the base in a working position, a lower end of the rod is adjacent to and facing the working contact, and a permanent magnet secured to the cover, such that when the cover is locked on the bowl, the magnet is adjacent to and facing an upper end of the rod.
A magnetic safety device in combination with a food processor comprising a base, an electric motor enclosed by the base, an electric control circuit for the motor, a working vessel including a bowl and cover removably locked on the bowl, the cover including a chute, means for locking the bowl on the base in a working position, and a pusher for pressing inserted products into the chute, the safety device comprising a duct extending along a generatrix of the bowl, a magnetically controlled working contact connected with the electric control circuit for the motor and mounted to the base so as to be disposed under the duct in working position of the bowl, a permanent magnet secured to the pusher and a magnetic circuit adapted to convey the flux introduced by the permanent magnet, when the pusher is inserted into the chute, to the magnetically controlled working contact.
A magnetic safety device in combination with a food processor comprising a base, an electric motor enclosed by the base, an electric control circuit for the motor, a working vessel including a bowl and a cover removably locked on the bowl, and means for locking the bowl on the base in a working position the safety device comprising a duct extending along a generatrix of the bowl, a magnetically controlled working contact connected with the electric control circuit for the motor and mounted to the base so as to be disposed under the duct in the working position of the bowl, a mobile assembly slidably mounted inside the duct and having top and bottom ends, first and second magnets affixed to said top and bottom ends, respectively, a permanent magnet situated to be brought above the mobile assembly when said cover and bowl are locked, and the permanent and the first magnet having the same polarity so as to produce repulsion when the cover is locked on the bowl.
A magnetic safety device in combination with a food processor comprising a base, an electric motor enclosed by the base, an electric control circuit for the motor, a working vessel including a bowl and a cover removably locked on the bowl, and means for locking the bowl on the base in a working position, the safety device comprising a duct extending along a generatrix of the bowl, a magnetically controlled working contact connected with the control circuit and mounted to said base so as to be under the duct in the working position of the bowl, the cover including a cam and the safety device further comprising a pusher slidably mounted inside the duct, the pusher having a top end engageable with said cam and a bottom end, a permanent magnet secured to the bottom end of the pusher, said permanent magnet modifying the state of the magnetically controlled working contact when the permanent magnet approaches or moves away from the magnetically controlled working contact under the action of said cam coming in and out of contact with the top end of the pusher.
Dependencies are inferred from the claim text.