Pintle Pintle A pintle is a pin or bolt, usually inserted into a gudgeon, which is used as part of a pivot or hinge. Other applications include pintle and lunette ring for towing, and pintle pins securing casters in furniture. Pintle/gudgeon sets have many applications, for example: in sailing to hold the rudder onto the boat; in transportation a pincer-type device clamps through a lunette ring on the tongue of a trailer; in controllable solid rocket motors a plug moves into and out of the motor throat to control thrust. In electrical cubicle manufacture, a pintle hinge is a hinge with
Hinge teeth these function as hinge teeth. This arrangement is characteristic of the Pandoridae, the jingle shells Anomiidae, and Dimyidae. The "schizodont" hinge has reverse "V" shaped scissurate teeth, and often an elongated lateral tooth. This arrangement is found in most Unionidae freshwater mussels. The "pachyodont" hinge has large obscure tubercules with corresponding pits on the opposite valve. This arrangement is characteristic of the Chamidae, the jewel boxes. The "heterodont" hinge has two to three wedge-shaped cardinal teeth set in the center near the umbones, and generally also has elongated lateral teeth on the anterior and posterior margins (on one or both