| US 7,591,039 B2 | ||
| Gaskets for floor sweeper | ||
| Bryan Kaleta, 1037 Hinswood Dr., Darien, Ill. 60561 (US); and Mahesh Lakhiani, 1 Leo Ter., Denville, N.J. 07834 (US) | ||
| Filed on Nov. 14, 2005, as Appl. No. 11/273,288. | ||
| Prior Publication US 2007/0107149 A1, May 17, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A47L 11/24 (2006.01) | ||
| U.S. Cl. 15—42 [15/41.1; 15/52.1; 74/606 R; 277/637] | 14 Claims |

| 1. A floor sweeper comprising:
an elongated handle having opposite top and bottom ends;
a substantially rectangular sweeper head mounted at the bottom of the elongated handle, the sweeper head having a front, back,
and opposite first and second sides,
a front roller shaft having opposite ends mounted on the front for rotation in a first direction;
a rear roller shaft having opposite ends mounted on the back for rotation in a second direction opposite the first direction;
first and second side roller shafts having opposite ends mounted on the first and second sides respectively;
the front, rear and side roller shafts all having sweeping bristles mounted thereon;
first gear housing mounted at one of the corners of the rectangular sweeper head, the front roller shaft and the first side
roller shaft having an end mounted in the first gear housing, the front roller shaft and the side roller shaft drivingly connected
to each other;
a first circular opening in the first gear housing through which the front roller shaft passes;
a circular collar extending from the first gear housing and disposed about the first circular opening;
a cylindrical flexible soft gasket mounted on the front roller shaft adjacent to the first circular opening for restricting
the entrance of debris through the first opening into the first gear housing, the diameter of the flexible soft gasket being
at least as great as the diameter of the first circular opening;
a first gasket retaining ring mounted on the front roller shaft adjacent to the gasket for retaining the gasket between the
first circular opening and the first gasket retaining ring, the first flexible soft gasket and first gasket retaining ring
fitting inside of the circular collar;
a second circular opening in the first gear housing through which the first side roller passes;
a second circular collar extending from the first gear housing and disposed about the second circular opening:
a second cylindrical flexible soft gasket mounted on the first side roller shaft adjacent to the second circular opening for
restricting the entrance of debris through the second opening into the gear housing, the diameter of the second flexible soft
gasket being at least as great as the diameter of the second circular opening,
a second gasket retaining ring mounted on the first side roller shaft adjacent to the second gasket for retaining the second
gasket between the second circular opening and the second gasket retaining ring, the second flexible soft gasket and second
gasket retaining ring fitting inside of the second circular collar;
a positioning ring operatively connected to each of the front roller shaft and the first side roller shaft within the first
gear housing adjacent to the first circular opening and second circular opening respectively through which the front roller
shaft and first side roller shaft passes; and
an inner wall of the housing including a means to retain the respective positioning ring, the retaining means including a
wall portion spaced from the respective opening which limits axial movement of the positioning ring.
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