Back to results
US 4,218,911 AGranted
Rivet head forming tool
OwnerJerry A. Johnstoninventor
Life of this patent
Estimating the term…
Abstract
A tool is described for forming a rivet head in a shank portion opposite the manufactured head of a rivet of the type often used in the aircraft industry including a base and plunger for backing the shank portion with movement of the plunger responsive to impact of a rivet gun on the manufactured head opposite the shank.
Claims5
A tool for supporting and backing while forming a rivet head on a shank passing through stock opposite a manufactured head engaged by a rivet gun comprising:
- an elongated tubular base having an open central chamber therein;
- an elongated plunger carried for axial movement in said central chamber;
- a stock engaging surface carried on one end of said base;
- means maintaining an adjacent end of said plunger in spaced relation with said stock by an amount accommodating the height of the formed rivet head;
- and
- a weight carried by said plunger opposite said adjacent end thereof;
- whereby the force of the rivet gun is exerted against the plunger and the weight carried thereby supporting and backing the rivet while the head is being formed
4 more elements
Dependencies are inferred from the claim text.