US 11,697,148 B1
Hydraulic fastener tool
Mark Spilker, Reno, NV (US)
Filed by Mark Spilker, Reno, NV (US)
Filed on Feb. 20, 2022, as Appl. No. 17/676,180.
Application 17/676,180 is a continuation in part of application No. 16/785,350, filed on Feb. 7, 2020, granted, now 11,292,050.
Claims priority of provisional application 62/802,810, filed on Feb. 8, 2019.
Int. Cl. B21J 15/10 (2006.01); B21J 15/20 (2006.01); B21J 15/32 (2006.01); B21J 15/02 (2006.01); B21J 15/04 (2006.01)
CPC B21J 15/105 (2013.01) [B21J 15/20 (2013.01); B21J 15/326 (2013.01); B21J 15/022 (2013.01); B21J 15/045 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A hydraulic fastener tool comprising:
a tool body with a handle and trigger;
a hydraulic power system activated by pulling the trigger;
a retaining collar connecting the tool body to a nose assembly comprising an anvil assembly, a puller, a collet assembly, a free-floating ejector, a spring, and a shock tube;
the anvil assembly comprising an anvil tube, an anvil adaptor, and a removeable anvil,
wherein the anvil tube is connected with the retaining collar, the anvil adaptor is connected with the anvil tube, and a threaded connection removeably connects the anvil with the anvil adaptor;
a piston moveably disposed within the anvil assembly and connected with the puller, wherein the trigger activates the hydraulic power system and pulls the piston and puller back;
the collet assembly is moveably disposed within an internal circumference of the anvil tube and anvil adaptor, and the collet assembly comprises segments wherein each segment comprises a jaw section with teeth, a guide section, a spring section, and a rim between the guide section and the spring section,
wherein the jaw sections form a circumference that is sized to receive and grip a fastener stem;
wherein the guide sections form a circumference that is sized to receive a severed fastener stem and guide the severed fastener stem backwards;
wherein the spring sections form a circumference that is sized to receive the spring;
and wherein a nose end of the segmented collet assembly rests on an internal column of the free-floating ejector;
the spring comprises a length of coils that run between a piston end of the collet assembly and the piston, wherein the spring is disposed within an internal circumference of the shock tube and within the circumference of the spring sections of the collet assembly, and wherein the spring coils are spaced so that a severed fastener stem moves backwards;
the free-floating ejector comprising a nose, a surface, an external annular column, and the internal column, wherein the nose and the internal column form a continuous annular column sized to receive the pintail of a fastener;
wherein the free-floating ejector is moveably constrained by the anvil, the nose end of the collet assembly, and a nose end of the puller,
and wherein the ejector may be removed by unthreading the anvil from the anvil adaptor.