Modular tool bit holder system

A modular tool bit holder system comprising:

• an angle tool bit holder including a housing that at least partially contains one or more of a first input shaft rotatably drivable relative to the housing about a first axis, a first angle gear rotatably drivable by the first input shaft relative to the housing, a second angle gear rotatably drivable by the first angle gear relative to the housing about a second axis at an angle to the first axis, and a first tool bit holder rotatably drivable by the second angle gear about the second axis, the angle tool bit holder further including a first connector coupled to the housing;
• a flexible shaft tool bit holder including a second input shaft rotatably drivable about a third axis, a flexible intermediate shaft bendable into a plurality of configurations, and a second tool bit holder rotatably drivable about a fourth axis, the flexible intermediate shaft configured to transmit rotation from the second input shaft to the second tool bit holder, the flexible shaft tool bit holder further including a second connector;
• and
• an extension handle including a third input shaft rotatably drivable about a fifth axis and a third output shaft rotatably drivable about the fifth axis by the third input shaft, the extension handle further including a third connector,
• wherein the first connector is interchangeably couplable to the second connector to non-rotatably couple the housing to the flexible shaft tool bit holder, or to the third connector to non-rotatably couple the housing to the extension handle, and
• wherein the system is operable in (a) a first configuration in which the angle tool bit holder is usable without the flexible shaft tool bit holder and the extension handle to drive a first tool bit received by the first tool bit holder by coupling the first input shaft to a rotatable output member of a power tool, (b) a second configuration in which the flexible shaft tool bit holder is usable without the angle tool bit holder and the extension handle to drive a second tool bit received by the second tool bit holder by coupling the second input shaft to a rotatable output member of a power tool, (c) a third configuration in which the angle tool bit holder and the flexible shaft tool bit holder are operable in combination without the extension handle to drive a third tool bit received by the first tool bit holder by coupling the second input shaft to a rotatable output member of a power tool and coupling the first input shaft to the second tool bit holder, and (d) a fourth configuration in which the angle tool bit holder and the extension handle are usable together without the flexible shaft tool bit holder to drive a fourth tool bit received by the first tool bit holder by coupling the third input shaft to a rotatable output member of a power tool and coupling the first input shaft to the third output shaft.

A modular tool bit holder system comprising:

• an angle tool bit holder including a housing that at least partially receives one or more of a first input shaft rotatable relative to the housing about a first axis, a first output shaft rotatable relative to the housing about a second axis at an angle to the first axis upon rotation of the first input shaft, and a first tool bit holder rotatable relative to the housing upon rotation of the first output shaft and configured to be coupled to a tool bit, the angle tool bit holder further including a first connector coupled to the housing;
• a flexible shaft tool bit holder including a cover that at least partially receives one or more of a second input shaft rotatable relative to the cover, a flexible shaft rotatable relative to the cover upon rotation of second input shaft, and a second tool bit holder rotatable relative to the cover upon rotation of the flexible shaft and configured to be coupled to a tool bit, the flexible shaft tool bit holder further including a second connector coupled to the cover,
• wherein the first input shaft is releasably coupleable to the second output bit holder while the second connector is releasably coupleable to the first connector, such that, when coupled, the first input shaft is rotatable relative to the housing upon rotation of the second output bit holder relative to the cover while the housing and the cover are held rotationally stationary relative to one another.