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Daniel Kotler: Roll-up floor tile system and method. Snap Lock, Holland & Hart, October 3, 2006: US07114298 (95 worldwide citation)

A plurality of interlocking tile pieces form a generally flat traffic-carrying surface. The tile are locked together in a manner to form a plurality of non-bendable tile joints. The tile includes a hinge or fold line along a first axis and a hinge or fold line along a second axis. The hinges allow t ...


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Daniel Kotler: Modular sports tile with lateral absorption. June 5, 1990: US04930286 (87 worldwide citation)

A modular tile for interlocking with other similar tiles to form a floor covering which provides enhanced traction at its playing surface and improved tolerance to sudden lateral movement. The tile comprises a plastic support grid having rectangular configuration bounded by a perimeter wall and incl ...


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Daniel Kotler: Roll-up floor tile system and the method. Snap Lock, Holland & Hart, October 12, 2004: US06802159 (83 worldwide citation)

A plurality of interlocking tile pieces form a generally flat traffic-carrying surface. The tile are locked together in a manner to form a plurality of non-bendable tile joints. The tile includes a hinge or fold line along a first axis and a hinge or fold line along a second axis. The hinges allow t ...


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Daniel Kotler: Modular protective surfacing member. Duragrid, Thorpe North & Western, August 29, 1989: US04860510 (66 worldwide citation)

A modular tile for interlocking with other similar tiles to form a surface covering which provides a cushioned surface suitable for use in an outdoor playground environment which allows water to substantially flow thereunder for purposes of draining free from the tile. The tile includes a flat suppo ...


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Daniel Kotler, David R Little: Dasher board. Dan Kotler, Thorpe North & Western L, January 26, 1999: US05863030 (27 worldwide citation)

A modular containment wall for a sports area. The containment wall is an assembly of panels, each panel having a first edge, an opposing second edge, and interlocking members configured and arranged for (i) interlocking the first edge to a first adjacent panel and (ii) interlocking the second edge t ...


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Daniel Kotler: Hockey puck. Thorpe North & Western, October 6, 1998: US05816965 (11 worldwide citation)

A hockey puck with locking runners of various shapes is self-orienting and highly visible. The puck has runners with notches disposed in holes with protrusions such that the notches and protrusion mate, locking the runners in the puck and aligning the runners in the holes. The puck has a perimeter s ...


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