Patent ID: 7717611

Claim:
An egg beater comprising: a base ( 2 ) formed with an accommodating chamber ( 20 ); a positioning post ( 21 ) being projected from a bottom wall of the accommodating chamber ( 20 ) and having an outer wall formed with planes ( 210 ); an upper edge of an outer wall of the base ( 2 ) being formed with an annular engage groove ( 22 ) having a lower wall; an annular recess ( 23 ) being formed at an outer wall of the base and being below a lower wall of the engage groove ( 22 ); a stirrer ( 3 ) firmly installed in the accommodating chamber ( 20 ) of the base ( 2 ); an upper side of the stirrer ( 3 ) being provided with a whisking member ( 30 ) and a lower side of the stirrer being formed with an insert groove ( 31 ); an inner wall of the stirrer being formed with planes ( 310 ); a waterproof washer ( 4 ) being engageable with the engage groove ( 22 ) of the base ( 2 ), but not in contact the annular recess ( 23 ); an upper cover ( 5 ) having a semi-spherical shape, and being mountable upon the base ( 2 ) by an inner wall thereof disposed with an annular recess ( 50 ); in assembling the egg beater, the stirrer ( 3 ) is installed in the accommodating chamber ( 20 ) of the base ( 2 ) by the positioning post ( 21 ) in the accommodating chamber ( 20 ) inserted in the insert groove ( 31 ) of the underside of the stirrer ( 3 ) by mutual engagement of the planes ( 210 ) of the outer wall of the positioning post ( 21 ) and the planes ( 310 ) of the inner wall of the insert groove ( 31 ), the stirrer ( 3 ) can stably and immovably be positioned in the accommodating chamber ( 20 ); then, the waterproof washer ( 4 ) is fitted around the engage groove ( 22 ) of the base ( 2 ), and then the upper cover ( 5 ) is covered on the annular recess ( 23 ) of the base ( 2 ), causing the waterproof washer ( 4 ) closely fixed between the annular recess ( 50 ) of the upper cover ( 5 ) and the engage groove ( 22 ) of the base ( 2 ).