Pintle exotic metal alloys. For World War II aircraft with sideways-retracting main gear units, carefully set-up "pintle angles" for such axes of rotation during retraction and extension allowed the maingear struts to be raked forward while fully extended for touchdown and better ground handling, while permitting retraction into rearwards-angled landing gear wells in their wings to usually clear the forward wing spar for stowing while in flight. 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
Pin (amateur wrestling) Pin (amateur wrestling) A pin, or fall, is a victory condition in various forms of wrestling that is met by holding an opponent's shoulders or scapulae (shoulder blades) on the wrestling mat for a prescribed period of time. This article deals with the pin as it is defined in amateur wrestling. In amateur wrestling, a pin ends the match regardless of when it occurs. Situations which are almost pins but for whatever reason do not meet the criteria—for example, have only one shoulder down or have the defending wrestler blocked in a neck bridge—are rewarded with exposure points (in collegiate