Vorwerk & Co Interholding Gmbh

Heinz-Jurgen Ahlf

Wieland Guhne

Peter Wulf

Hans-Peter Simm

Manfred Eckart

Rolf Strohmeyer

Gentile Marafante

Mario Tecchiati

Jurgen Jager

Bernd Fink, Deceased

Gieland Guhne

Manfred Eckhart

The invention relates to an apparatus for performing work on a floor surface such as an electrically driven vacuum and polishing machine. The machine includes a chassis and a wand pivotally connected to the chassis by a pivot connection. A vacuum cleaner suction unit is mounted on the wand and the weight force of the suction unit acts outside of the center of gravity conjointly defined by the chassis and the floor working device mounted on the chassis. The floor working device acts on the floor surface with an uneven force distribution. A spring coacts with the pivot connection to shift at least a portion of the weight force of the suction unit to the center of gravity of both the chassis and the floor working device to provide a more even distribution of the force acting on the floor surface.

Apparatus for performing work on a floor surface

The invention relates to an electric vacuum cleaner having a filter bag intermediate carrier disposed between a filter cassette arranged above a motor-driven blower and the motor housing. The intermediate carrier is pivotally mounted via a hinge and has guide cams which dip into engaging recesses of a base plate of the filter bag. The vacuum cleaner apparatus can only be operated with filter bags which are specific to this apparatus. Safety cams are formed on the intermediate carrier and follow the inner wall surface of the filter cassette when the intermediate carrier is closed. Catches are formed on the inner wall surface but do not catch the safety cams if an authorized filter bag is placed in the filter cassette. However, if an unauthorized filter bag is placed in the filter cassette, then the structure of this filter bag causes the safety cams to deflect and catch in the catches thereby preventing the operator from completely closing the intermediate carrier on the filter cassette.

Interface arrangement for a filter bag in a vacuum cleaner

The invention relates to an electric vacuum cleaner and the corresponding filter bag (7) which can be removed from a chamber (6) after opening and separating a socket connection. In order to achieve easier, cleaner handling upon changing the filter bag, the chamber (6) is separable by disengagement in a region of the shaft, about which the chamber can pivot, (14) after swinging separation from the filter bag (7).

Electrical vacuum cleaner and filter bag for same

The present invention relates to an arrangement of filter bags in electric vacuum cleaners in which the filter bag has a bottom plate which has an insertion opening for a fan-side air-blast socket and at least one side-edge indentation (28) and is arranged as a transverse wall in a filter-bag chamber (6) which is adjacent a motor-fan housing (5) and can be lifted off from it. A second side-edge indentation is disposed opposite first side-edge identation and housing-side profections extend into both indentations and protrude beyond the lower side of the bottom plate.

Arrangement of filter bags in electric vacuum cleaners

An electric vacuum cleaner having a chamber arranged above the motor housing to receive a filter bag the side of which facing the motor housing is in valve-closed socket-connection communication with the fan-air channel and which can be removed from the chamber after opening and separating the socket connection. The filter bag is in socket-connection communication with a filter-bag intermediate support which is carried along upon the swinging open of the chamber and which has the valve-closure member and from which the filter bag can be separated somewhat on the other side of the vertical position of the cross-sectional plane of the socket connection.

Electric vacuum cleaner

The invention relates to a vacuum cleaner nozzle that is provided with a latching device between the attachment stub and the nozzle housing. These elements are latched together in a defined swivelling range in such a way that they perform a common synchronized swivelling movement. The elements can be unlatched again by overcoming the action of a spring-loaded latching bolt.

Vacuum cleaner nozzle

A bristle component is disclosed for a floor cleaning nozzle for vacuum cleaners. The bristle component includes a bristle holding strip mounted to the housing of the nozzle. The holding strip is provided with downwardly extending bristles at the corners or sides of the housing which are longer than the remaining bristles held therein. These longer bristles extend laterally from the sides of the housing as the nozzle is moved along the floor and sweep away dust from the floor in a corner defined by the floor and a surface extending upwardly from the floor such as the wall of a room or the like.

Bristle component for a floor cleaning nozzle

The invention is directed to an attachment nozzle for a vacuum cleaning system such as a vacuum cleaner or the like which includes a rotating brush. A modular step-up gear transmission is interposed between the brush and the air turbine which runs in the suction air stream. The attachment nozzle includes an outer ring region wherein a plurality of air-inlet apertures are formed which are covered either partially or entirely by means of a ring-shaped body which is rotatably mounted on the end portion of the housing. A cup-shaped recess is formed centrally of the plurality of air inlet openings and defines a cup-shaped recess for receiving the modular gear transmission therein.

Attachment nozzle for a vacuum cleaning system

A suction nozzle unit for selectively aspirating dust from flat surfaces and from joints or edges has a connecting suction member, a body part connected with the latter and having two separate air passages provided with different cross-sections and forming a joint nozzle and a surface nozzle, and a switching element alternatingly communicating each of the passages with the connecting suction member to actuate a respective one of the nozzles. The connecting suction member is rotatably connected with the body part, and the surface nozzle is provided with a bristle-containing member.

Suction nozzle unit

An arrangement for front suction on a vacuum cleaner, which includes a lever or a spring on a front side of the vacuum cleaner. The lever or the spring lifts the vacuum cleaner from the floor in response to a counter pressure exerted on the lever or the spring by a limiting wall, when the vacuum cleaner abuts against that limiting wall.

Front-suction arrangement on a vacuum cleaner

A connecting element for connecting an accessory instrument to a vacuum cleaner, has a front portion having a central axis and being tiltably connectable with an accessory instrument, a connecting portion having a further central axis and connectable with a vacuum cleaner as well as rotatably connected with the front portion, and a rotary joint which rotatably connects the connecting portion with the front portion. The rotary joint is arranged so that in normal position of the front and connecting portions, their central axes extend rectinlinearly in one direction, whereas in a plurality of further positions the central axes of these portions extend at an angle relative to one another. Advantageously, this angle is equal to between 10.degree. and 20.degree..

Growing community of inventors

Bergisch-Gladbach, Germany

Heinz-Jurgen Ahlf