Abstract: A clamping device for combined floors includes a base member having a snapper, a first rib and a second rib extending upwardly form the base member and adapted to be received in the combined floors for connecting the combined floors. The base member has a &pgr;-shaped bracket extending from a first end of the base member and a T-shaped space defined in a second end of the base member. The &pgr;-shaped bracket is reciprocally and movably received in the T-shaped space of an adjacent base member so that the clamping device is connected to one another.

Abstract: A hidden dual loading spring-type floor board fastening mount structure comprised of a plurality of wooden floor boards, fastening mounts, and lengths of soft padding. Each wooden floor board has a tongue and a groove respectively formed along its long and short sides, with the fastening mount having a first tang and a second tang projecting upward from its top surface that enables engagement to the wooden floor boards. The fastening mount has a T-shaped slide block extending from one side and a T-shaped recess formed in its other side. In the invention herein, since the T-shaped slide block of the fastening mount is inserted into the T-shaped recess of another fastener mount and, furthermore, two in-line stays are postured against the two spring holes of another fastener mount, the two adjacent fastener mounts are interconnected into a flexibly extendible and retractable, tie member-form, floor board fastening mount structure, which effectively facilitates the installation of the wooden floor boards.