Granted Patent B2

US 9,527,194 · App. 13/331,257 · Granted Dec 27, 2016

Abstract

Claims (27)

1. A polyaxial driver, comprising:

a socket adapted to couple to a fastener;

a plurality of arcuate gear teeth circumscribing the socket;

a driver body having a longitudinal axis and being engageable with the gear teeth to rotate the socket until the maximum torque threshold is reached, wherein the driver body forms a ball-and-socket joint with the gear teeth and is rotatable about the plurality of arcuate gear teeth along three different axes;

a pin disposed within the driver body, the pin being coaxial with the longitudinal axis of the driver body and having an opening that extends substantially transversely to the longitudinal axis of the driver body, and when the maximum torque threshold is reached the pin disengages the gear teeth; and

a rod disposed within the opening of the pin, configured to limit movement of the pin.

2. The polyaxial driver of claim 1 , wherein the maximum torque threshold is adjustable.

3. The polyaxial driver of claim 1 , wherein the socket includes a passage therethrough adapted to receive the fastener from either side of the passage.

4. The polyaxial driver of claim 1 , further comprising a handle attached to the driver body.

5. A wrench, comprising:

an elongate body defining a passage through a first end thereof;

a plurality of gear teeth arranged in a substantially spherical configuration and movable with respect to the elongate body, the gear teeth substantially surrounding the passage;

a pin having a longitudinal axis and being movably disposed within the elongate body and engageable with the plurality of gear teeth, the pin including an opening that extends substantially transversely to the longitudinal axis of the pin, wherein the elongate body is operable to rotate the plurality of gear teeth when the pin engages the plurality of gear teeth, and when the maximum torque threshold is reached the pin disengages from the plurality of gear teeth;

a rod disposed within the opening of the pin, configured to limit movement of the pin; and

a spring coupled to the pin and the elongate body, a compression of the spring is selectively adjustable.

6. The wrench of claim 5 , further comprising a cap coupled to the elongate body and operable to selectively adjust the compression of the spring.

7. The wrench of claim 5 , wherein the elongate body includes a handle.

8. A polyaxial tool, comprising:

an elongate body defining a first end, a second and a longitudinal axis extending therebetween; the elongate body defining a cavity at the first end;

a plurality of arcuate gear teeth circumferentially arranged in the cavity and movable with respect to the elongate body;

a socket coupled to the housing and coaxial with the plurality of gear teeth; and

a handle coupled to the second end, wherein an angular position of at least one of the elongate body and handle is adjustable with respect to the plurality of gear teeth in at least three different axes;

the elongate body engaging the gear teeth to rotate the socket until a maximum torque threshold is reached, causing the elongate body to disengage the gear teeth;

a pin movably coupled to the elongate body and having an opening that extends substantially transversely to a longitudinal axis of the pin, wherein the pin releasably engages the elongate body to the at least one of plurality of gear teeth;

a rod disposed within the opening of the pin, configured to limit movement of the pin; and

a spring coupled to the pin, a compression of the spring is selectively adjustable.

9. The polyaxial tool of claim 8 , wherein the pin engages the at least one of plurality of gear teeth until the maximum torque threshold is reached.

Assignments (8)