Vacuum cleaner nozzle construction

Claim 2

In a vacuum cleaner, a nozzle unit comprising a housing having an opening; a brush disk located in said opening and having bristles extending outwardly therefrom; a tubular socket on said housing; mounting means mounting said disk for rotation about an axis which extends substantially normal to the plane of said opening, including a journal pin extending to said brush disk and having a first end portion rotatably received in said socket and a second end portion, and a bearing ball between and in contact with said second end portion and said disk so as to form a single-point bearing; and brush-disk changing means in the region of said tubular socket for ejecting said mounting means from said socket, thereby disconnecting said disk from said housing and facilitating rapid installation and removal of said brush disk in said housing.

Claim 3

In a vacuum cleaner, a nozzle unit comprising a housing have an opening; a brush disk located in said opening and having bristles extending outwardly therefrom; mounting means mounting said disk for rotation about an axis which extends substantially normal to the plane of said opening, including a journal pin extending to said brush disk and having a first and a second end portion, a tubular socket on said housing and turnably accommodating said first end portion, and a bearing ball between and in contact with said second end portion and said disk so as to form a single-point bearing; and brush-disk changing means in the region of said tubular socket for facilitating rapid installation and removal of said brush disk in said housing, comprising a sleeve surrounding said first end portion and accommodated in said socket, said sleeve having a flange juxtaposed with an axial end face of said socket that faces inwardly of said housing, and a leaf spring connected with said socket and having spring portions which engage said flange and urge the same towards said axial end face.

Claim 4

In a vacuum cleaner, a nozzle unit comprising a housing have an opening; a brush disk located in said opening and having bristles extending outwardly therefrom; mounting means mounting said disk for rotation about an axis which extends substantially normal to the plane of said opening, including a journal pin extending to said brush disk and having a first and a second end portion, a tubular socket on said housing and turnably accommodating said first end portion, and a bearing ball between and in contact with said second end portion and said disk so as to form a single-point bearing; and brush-disk changing means in the region of said tubular socket for facilitating rapid installation and removal of said brush disk in said housing, comprising a sleeve surrounding said first end portion and accommodated in said socket, said sleeve having a flange juxtaposed with an axial end face of said socket that faces inwardly of said housing, and a leaf spring connected with said socket and having spring portions which engage said flange and urge the same towards said axial end face.

Claim 5

A nozzle unit as defined in claim 2, wherein said flange is of one piece with said sleeve.

Claim 6

A nozzle unit as defined in claim 2, said mounting means comprising a guide tube surrounding said pin and having a section which is rigidly received within said sleeve.

Claim 7

A nozzle unit as defined in claim 4, said tubular socket having a center passage provided with an inner open end and with an outer open end which communicate with the ambient atmosphere.

Claim 8

A nozzle unit as defined in claim 2; further comprising a sleeve bearing accommodated in said socket, surrounding said sleeve and extending slightly outwardly beyond said axial end face.