Multi-purpose suction cleaner nozzle

Abstract

Abstract This invention relates to a multi-purpose suction cleaner nozzle having a suction inlet which is movable over a rug to remove dirt therefrom. A brush for removing dirt from a floor is mounted on a diaphragm for movement between upper and lower positions at the vicinity of the suction inlet, the diaphragm forming a wall of a space in communication with a passageway leading to the suction inlet and in which a partial vacuum is developed during operation of the nozzle. A spring acting on the diaphragm tends to bias the brush to its lower position below the suction inlet responsive to a first partial vacuum developed in the space when a floor is cleaned by the nozzle and the air flow therethrough exceeds a predetermined speed. A second higher partial vacuum is developed in the space when a rug is cleaned by the nozzle and the air flow therethrough is at or less than the predetermined speed, such higher vacuum overcoming the biasing action of the spring and moving the brush to its upper position at or above the suction inlet. In order to insure that the brush will always move downward from its upper to its lower position, a vertical toggle joint is pivotally connected at its opposite ends to a wall of the space and to the diaphragm and the bend of the toggle is moved horizontally responsive to vertical movement of the diaphragm. When the diaphragm moves upward it causes the toggle bend to move in one direction through dead center to promote movement of the brush to its upper position; and when the diaphragm moves downward with the aid of the spring, it causes the toggle bend to move in the opposite direction to a stable position near dead center. At such stable position the toggle and brush function to support the nozzle when a floor is cleaned, thus eliminating the need for a separate support for the nozzle.

Inventors

• 👤 Osten Schwartz

Bibliographic Details