Electric Work Machine Tool Quick Coupler Retention Device

A coupler configured to be disposed on a machine and to securely connect an attachment to the machine, the coupler comprising a device for securing the attachment to the coupler, the device comprising:

• a retention pin comprising an elongate direction and configured to be disposed on the coupler and to move in the elongate direction to insert a first end in the elongate direction into an opening in the attachment, securing the coupler to the attachment;
• a thermoactuator comprising:
• a chamber configured to be fastened to the coupler, containing a material comprising a volume that changes as a function of temperature, and sealed at an end with a piston that is mechanically connected to the retention pin proximate to a second end of the retention pin, the second end being disposed opposite the first end;
• and
• an electric temperature-altering device that, while activated, changes the temperature and volume of the material causing the piston to exert a first force on the retention pin that moves the retention pin relative to the opening in the attachment.

A machine comprising:

• a means of moving;
• a coupler configured to be disposed on the machine and including a device to securely connect an attachment to the machine via the coupler, the device including:
• a retention pin defining an elongate direction and configured to be disposed on the coupler, wherein to secure the coupler to the attachment, the retention pin is configured to move in the elongate direction to insert a first end of the retention pin into an opening in the attachment;
• and
• a thermoactuator including:
• a chamber configured to be fastened to the coupler, containing a material comprising a volume that changes as a function of temperature, and sealed at an end with a piston that is mechanically connected to the retention pin proximate to a second end of the retention pin, the second end being disposed opposite the first end;
• and
• an electric temperature-altering device that, while activated, changes the temperature and volume of the material causing the piston to exert a first force on the retention pin that moves the retention pin relative to the opening in the attachment.