The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 1994
Filed:
Apr. 24, 1992
Paul T Giegerich, Laverock, PA (US);
Dart Mart, Inc., Willow Grove, PA (US);
Abstract
A dart flight base has a threaded split spigot which is screwed in to the rear of the barrel of a dart. A flight mounting pin has a head at one end, a ring frictionally fitted around the pin at a location spaced from the head and mounts a flight vane assembly between the head and ring. The flight vane assembly has a plurality of vanes mounted along and extending radially from a central tube. The pin passes through the tube and has a slightly smaller outside diameter than the tube inner diameter which allows the flight vane assembly to spin freely on the pin. The ring can be positioned along the length of the pin to compress the flight tube to a lesser or greater degree between itself and the head to control the degree of spin. The end of the pin opposite the head passes through a bore in the base and spigot and can be positioned to adjust the distance between the head and base. When the base is screwed into the barrel the sides of the spigot compress against the pin to hold it in the adjusted position.