Title: Apparatus driven by an electric motor and incorporating a safety device

Abstract: An apparatus comprising a vessel adapted to receive a liquid, and which vessel has a drive shaft extending through the bottom of the vessel from an electric motor below the vessel to a rotary cutting or grinding blade or the like within the vessel, with a seal being provided to seal the vessel with respect to the drive shaft, has a safety device in the form of a cut-out switch which is normally held in its closed position by a plate of water-absorbent, cellulose-fibre based material disposed below the seal. Any aqueous liquid leaking from the seal will wet the plate reducing its strength and allowing the plate to bend to allow the cutout switch to move, under resilient bias to an open position, thus cutting off the supply of electrical current to the electric motor.

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Inventors: Tanguy, Pierre (Dardilly, FR)

Application Number: 826549
Filing Date: 1977-08-22
Publication_date: 1979-01-02
Assignee: SEB S.A. (Selongey, FR)
Primary Class(es): 361/23 200/61.07, 241/33, 241/36, 241/282.1, 310/68C, 340/605
Other Classes:
US Patent Ref:

B367021	Jan, 1975	Howard et al.	340/242.
1272308	Jul, 1918	Parker	200/61.
3979569	Sep, 1976	Bilgrei	200/61.

Other Refs: 2154982

May, 1973	DE

Primary Examiner: Salce, Patrick R.
Assistant Examiner:
Attorney: Young & Thompson