System and method for hand tool with quick release interchangeable work heads

A hand tool with quick release interchangeable work heads, comprising:

• a work head receiver as a component of a handle, the work head receiver having a first longitudinal axis and an inner cavity extending rearward from an open distal end, the inner cavity structured and arranged as a spline shaft socket, the work head receiver further having a quick release transverse to the first longitudinal axis, the quick release releasably disposing a locker transversely across a portion of the inner cavity;
• and
• at least one work head having a second longitudinal axis and a spline shaft concentrically conforming to the spline shaft socket of the work head receiver, the spline shaft further having a locking groove transverse to the second longitudinal axis and disposed to engage with the quick release locker when the shaft is disposed within the work head receiver, the spline shaft socket and the spline shaft preventing rotation of the at least one work head relative to the handle when the work head shaft is engaged to the socket of the handle;
• the quick release locker further including:
• a locking pin having a first section having a first diameter consistent across a first length and a second section having a second diameter consistent along a second length, the second diameter smaller than the first diameter;
• the locking pin disposed within a sleeve with the first section of the locking pin against a first spring disposed against a first end of the sleeve, at least a portion of the second section disposed through a securing cap affixed to a second end of the sleeve opposite from the first end, a second spring disposed within the sleeve and about a portion of the second section and disposed against the securing cap;
• wherein in a first state with the first spring and second spring extended against the locking pin, the first section is aligned to a longitudinal aperture in the sleeve opening transversely to the inner cavity such that a longitudinal portion of the first section of the locking pin is disposed within the inner cavity as the locker;
• and
• wherein in a second state with the first spring compressed by the locking pin laterally moved towards the first end, the first section of the locking pin is displaced from the inner cavity.

A hand tool for use with quick release interchangeable work heads, comprising:

• a work head receiver structured and arranged for attachment to a handle, the work head receiver having a first longitudinal axis and an inner cavity extending rearward from an open distal end, the work head receiver having a first polygonal cross section transverse to the longitudinal axis, the inner cavity further having a quick release transverse to the first longitudinal axis, the quick release releasably disposing a locker transversely across a portion of the inner cavity;
• and
• wherein the handle is structured and arranged to receive at least one work head having a second longitudinal axis and a shaft having a second polygonal cross section concentrically conforming to the first polygonal cross section of the inner cavity, the shaft further having a locking groove transverse to the second longitudinal axis and disposed to engage with the quick release locker when the shaft is disposed within the socket of the work head receiver, the first polygonal cross section and the second polygonal cross section preventing rotation of the at least one work head relative to the handle when the work head shaft is engaged to the work head receiver of the handle;
• the quick release locker further including:
• a locking pin having a first section having a first diameter consistent across a first length and a second section having a second diameter consistent along a second length, the second diameter smaller than the first diameter;
• the locking pin disposed within a sleeve with the first section of the locking pin against a first spring disposed against a first end of the sleeve, at least a portion of the second section disposed through a securing cap affixed to a second end of the sleeve opposite from the first end, a second spring disposed within the sleeve and about a portion of the second section and disposed against the securing cap;
• wherein in a first state with the first spring and second spring extended against the locking pin, the first section is aligned to a longitudinal aperture in the sleeve opening transversely to the inner cavity such that a longitudinal portion of the first section of the locking pin is disposed within the inner cavity as the locker;
• and
• wherein in a second state with the first spring compressed by the locking pin laterally moved towards the first end, the first section of the locking pin is displaced from the inner cavity.

A hand tool interchangeable work head for use with a quick release receiver, comprising:

• a work head having a first longitudinal axis and a shaft having a first polygonal cross section, the shaft further having a locking groove transverse to the first longitudinal axis, the work head structed and arranged to be received by a handle having a socket having a second longitudinal axis and an inner cavity extending rearward from an open distal end, the inner cavity having a second polygonal cross section transverse to the second longitudinal axis and concentrically conforming to the first polygonal cross section of the shaft, the socket further having a quick release transverse to the first longitudinal axis, the quick release releasably disposing a locker transversely across a portion of the inner cavity, the first polygonal cross section and the second polygonal cross section preventing rotation of the at least one work head relative to the handle when the work head shaft is engaged to the socket of the handle;
• and
• wherein the locking groove is structured and arranged to engage with a quick release locker when the shaft is disposed within the socket of the handle;
• the quick release locker further including:
• a locking pin having a first section having a first diameter consistent across a first length and a second section having a second diameter consistent along a second length, the second diameter smaller than the first diameter;
• the locking pin disposed within a sleeve with the first section of the locking pin against a first spring disposed against a first end of the sleeve, at least a portion of the second section disposed through a securing cap affixed to a second end of the sleeve opposite from the first end, a second spring disposed within the sleeve and about a portion of the second section and disposed against the securing cap;
• wherein in a first state with the first spring and second spring extended against the locking pin, the first section is aligned to a longitudinal aperture in the sleeve opening transversely to the inner cavity such that a longitudinal portion of the first section of the locking pin is disposed within the inner cavity as the locker;
• and
• wherein in a second state with the first spring compressed by the locking pin laterally moved towards the first end, the first section of the locking pin is displaced from the inner cavity.

A hand tool with quick release interchangeable work heads, comprising:

• a handle having a socket having a first longitudinal axis and an inner cavity extending rearward from an open distal end, the inner cavity having a first non-circular cross section transverse to the first longitudinal axis, the socket further having a quick release transverse to the first longitudinal axis, the quick release releasably disposing a locker transversely across a portion of the inner cavity;
• and
• at least one work head having a second longitudinal axis and a shaft having a second non-circular cross section concentrically conforming to the first non-circular cross section of the inner cavity, the shaft further having a locking groove transverse to the second longitudinal axis and disposed to engage with the quick release locker when the shaft is disposed within the socket of the handle, the first non-circular cross section and the second non-circular cross section preventing rotation of the at least one work head relative to the handle when the work head shaft is engaged to the socket of the handle;
• the work head selected from the group consisting of:
• a shovel, a spade, a hoe, a rake, a pitch fork, a digging spike, a threaded attacher, a sledge hammer, an axe, a pick;
• the quick release locker further including:
• a locking pin having a first section having a first diameter consistent across a first length and a second section having a second diameter consistent along a second length, the second diameter smaller than the first diameter;
• the locking pin disposed within a sleeve with the first section of the locking pin against a first spring disposed against a first end of the sleeve, at least a portion of the second section disposed through a securing cap affixed to a second end of the sleeve opposite from the first end, a second spring disposed within the sleeve and about a portion of the second section and disposed against the securing cap;
• wherein in a first state with the first spring and second spring extended against the locking pin, the first section is aligned to a longitudinal aperture in the sleeve opening transversely to the inner cavity such that a longitudinal portion of the first section of the locking pin is disposed within the inner cavity as the locker;
• and
• wherein in a second state with the first spring compressed by the locking pin laterally moved towards the first end, the first section of the locking pin is displaced from the inner cavity.