A mat lock pin for releasably holding together overlapping mats has an outer body and a rotor rotatably held within the outer body. The outer body is sized and shaped so as to snugly fit within aligned holes in overlapping mats, and is shaped so as to be non-rotational within the holes. The rotor has a central stem and a foot at each end. When the mat lock pin is in place extending through holes in overlapping mats, the rotor feet are at the outermost surfaces of the mats. Rotation of the rotor brings angled surfaces on the rotor feet to bear against the outermost mat surfaces, generating an axial force forcing the mats together. The axial forces forcing the mats together are carried by the rotor, permitting the outer body to be made of relatively low strength, and low cost, material.
1. A mat lock pin releasably joining mats, said mats having overlapping portions with aligned holes therein, comprising:
an outer body having a cross sectional shape to non-rotatably fit within said aligned holes in said overlapping mats;
a rotor, rotatably disposed within said outer body and comprising a central stem and a foot at each end of said central stem, each foot disposed generally at a right angle to the longitudinal axis of said central stem and forming a T-shape, each foot having a dimension which extends beyond the projected sides of said aligned holes to contact the mat surface surrounding said aligned holes, each foot comprising an inner surface having an inclined surface thereon, said central stem having a length which positions said inner surfaces of said feet proximal the outermost surfaces of overlapping mats.
2. The mat lock pin of claim 1 , wherein said outer body comprises projections which prevent said outer body from passing through said hole.
3. The mat lock pin of claim 1 , wherein said outer body has a cross sectional shape of a rectangle having rounded corners.
4. A mat lock pin releasably joining mats, said mats having overlapping portions with aligned holes therein, comprising:
an outer body having a cross sectional shape to non-rotatably fit within said aligned holes in said overlapping mats;
a rotor, rotatably disposed in said outer body and rotatable between locking and non-locking positions, said rotor comprising a central stem and a foot at both ends of said stem, each of said feet extending from said stem in a T-shaped configuration, whereby said mat lock pin is disposed in said aligned holes in said overlapping mats, said rotor is rotated into said locking position and said feet are forced against said mats providing axial forces tending to compress said overlapping mats against one another are carried by said rotor.
5. The mat pin of claim 4 , wherein said outer body comprises projections preventing said outer body from passing through said holes.
6. The mat pin of claim 5 , wherein said rotor feet comprise angled surfaces.