Quick-release coupler

A coupler for removably coupling a tool attachment at an end of a supporting arm, said coupler comprising:

• (a) a body member;
• (b) first and second pivot pin means carried by said body member for pivotally supporting said body member at said end of said arm, said first pivot pin means being disposed at one end of said body member and extending transversely between opposed sides of said body member, said second pivot pin means being disposed intermediate said one end and a second end of said body member and extending between said opposed sides of said body member parallel to said first pivot pin;
• and,
• (c) latch means for removably latching said coupler to said tool attachment, said latch means including:
• (i) a latch member pivotally supported by said body member by pivot pin means disposed towards said second end of said body member and extending between said opposed sides of said body member parallel to said first and second pivot pin means, said latch member for latchingly engaging said tool attachment in an engaged position such that when said body member tends to pull away from said tool attachment the latch member acts in tension to restrain such movement;
• and,
• (ii) latch retention means for normally retaining said latch member in the engaged position, said latch retention means including compression spring biasing means carried by said body member for biasing said latch member in the engaged position and being responsive to an applied force for disengaging said latch member from said engaged position thereby permitting coupling and decoupling of said tool attachment from said supporting arm.