A fastener driving apparatus includes a spring anvil assembly that comprises a gas spring and an anvil. The end of the piston that extends out of the gas spring may be fixedly disposed against an object that is capable of exerting a force against the piston for at least a portion of the operational
A fastener driving apparatus includes a spring anvil assembly that comprises a gas spring and an anvil. The end of the piston that extends out of the gas spring may be fixedly disposed against an object that is capable of exerting a force against the piston for at least a portion of the operational cycle. A drive mechanism acts on the spring assembly to store potential energy in the spring. The drive mechanism thereafter ceases acting on the spring assembly and the potential energy is released, causing the spring anvil assembly move and to separate from the drive mechanism for a period of free flight of the spring anvil assembly, the anvil thereafter moving to strike a fastener to drive the fastener into a substrate.
대표청구항▼
1. A fastener driving apparatus, the apparatus comprising a power source,a control circuit,a motor,a spring anvil assembly, said spring anvil assembly comprising a gas spring and an anvil,said gas spring comprising a chamber and a piston,a drive mechanism capable of selectively engaging and disengag
1. A fastener driving apparatus, the apparatus comprising a power source,a control circuit,a motor,a spring anvil assembly, said spring anvil assembly comprising a gas spring and an anvil,said gas spring comprising a chamber and a piston,a drive mechanism capable of selectively engaging and disengaging said spring anvil assemblywherein when said drive mechanism selectively engages said spring anvil assembly potential energy is increased in said gas spring and when said drive mechanism disengages said spring anvil assembly, potential energy from said gas spring decreases while accelerating the spring anvil assembly to drive a fastener,wherein during at least a portion of said drive stroke said drive mechanism disengages said spring anvil assembly and said gas spring piston does not exert an accelerating force on said spring anvil assembly. 2. The fastener driving apparatus of claim 1, wherein the total stroke of said gas spring piston is no more than 50% of the total stroke of said spring anvil assembly. 3. The fastener driving apparatus of claim 1, wherein the pressure increase within the gas spring caused by movement of said gas spring piston is less than 30%. 4. The fastener driving apparatus of claim 1, wherein said control circuit further comprises at least one sensor, wherein said at least one sensor may determine at least one of the position of said spring anvil assembly and the position of said drive mechanism. 5. The fastener driving apparatus of claim 1, wherein the drive mechanism comprises an intermediate stoppage point for storing or retaining of potential energy in the gas spring while the motor is de-energized and wherein the latency after the drive mechanism is restarted from said intermediate stoppage point is less than 100 milliseconds. 6. The fastener driving apparatus of claim 1, said apparatus comprising a bumper for absorbing the impact of the gas spring piston during an operational cycle of the apparatus. 7. The fastener driving apparatus of claim 1, further comprising a return mechanism for biasing said anvil assembly to a position where said gas spring is in a position to be re-energized. 8. The fastener driving apparatus of claim 7, wherein the return mechanism comprises one of a return spring (which can be mechanical or gas) or elastomer. 9. The fastener driving apparatus of claim 7, wherein the force of the return mechanism results in an acceleration of the spring anvil assembly of at least 50 inches per second squared. 10. The fastener driving apparatus of claim 1, said apparatus further comprising a pusher plate, wherein said spring anvil assembly ceases to act on a pusher plate prior to said anvil completing 50% of the drive of a fastener. 11. The fastener driving apparatus of claim 1, wherein the gas spring has a pressure of at least 300 psia for one portion of the operational cycle. 12. The fastener driving apparatus of claim 1 wherein the gas of said gas spring are comprised primarily of a non oxidizing gas such as nitrogen and inert gas. 13. The fastener driving mechanism of claim 1, wherein said drive mechanism comprises a cam, said cam comprising a cam profile, and wherein said cam profile is configured such that during the portion of the operational cycle in which the gas spring is being energized, the required torque to operate the cam varies no more than 30% for at least 70% of the cam rotation in which the gas spring is being energized. 14. The fastener driving apparatus of claim 1, wherein the mass of said spring anvil assembly is less than 15% of the mass of the apparatus. 15. A fastener driving apparatus, the apparatus comprising a power source,a control circuit,a motor,a gas spring, said gas spring comprising a chamber and a piston,an anvil assembly comprising an anvil,a drive mechanism capable of selectively engaging and disengaging said gas springwherein said drive mechanism is capable of selectively engaging said gas spring and thereafter disengaging from said spring to cease applying a force on said gas spring,wherein when said drive mechanism engages said gas spring, potential energy is stored in said gas spring, and when said drive mechanism thereafter disengages said gas spring said gas spring releases its potential energy and accelerates said anvil assembly, said anvil assembly being in a state of free flight for at least a portion of the drive stroke. 16. The fastener driving apparatus of claim 15, wherein the total stroke of said gas spring piston is no more than 50% of the total stroke of said anvil. 17. The fastener driving apparatus of claim 15, further comprising a return mechanism for biasing said gas spring to a position where said gas spring is in a position to be re-energized. 18. The fastener driving apparatus of claim 15, wherein the gas spring has a pressure of at least 300 psia for one portion of the operational cycle. 19. The fastener driving apparatus of claim 15, wherein the mass of said anvil assembly is less than 15% of the mass of the apparatus.
Leimbach, Richard L.; McCardle, Thomas A.; Bolender, Danny L.; Dickinson, Steve; Knueven, Joseph R.; Lance, Jr., Robert L.; Stoltz, Dan; Petrocelli, Michael V., Fastener driving tool using a gas spring.
Leimbach, Richard L.; Adams, Shane; Clark, Thomas W.; Petrocelli, Michael V.; Petrocelli, legal representative, Teresa, Method for controlling a fastener driving tool using a gas spring.
Sollberger Roger W. (5614 Beechmont Ave. Cincinnati OH 45230) Webb Walter J. (5117 Colerain Ave. Cincinnati OH 45223), Portable electric fastener driving apparatus.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.