Patent ID: 7181813

Claim:
A low profile heavy-duty buckle comprising: a) a male member being movable between removed, inserted, and loaded positions, and having: i) a main male body with a transverse first slot; ii) two retaining arms spaced part and protruding outwardly from the main male body, each retaining arm of the two retaining arms having a curved outer side surface having a shoulder portion and a first retaining block having a front face with a first toothed surface; and iii) a central guide arm located between the two retaining arms and protruding outwardly from the main male body; and b) a female member having: i) a transverse second slot located at a first end thereof; ii) two receiving spaces formed in a second end thereof, each of the two receiving spaces having a second retaining block forming a top opening in an upper surface of the female member, the second retaining block having a second toothed surface defining an edge of the top opening; iii) two side openings located on opposing sides thereof, one side opening of the two side openings communicating with each of the two receiving spaces; and iv) a central guide channel located between the two receiving spaces; wherein, when the male member is located in the removed position, the male member and the female member are separated, the central guide arm is located in the central guide channel, wherein, when the male member is located in the inserted position, one of the two retaining arms are located in each of the two receiving spaces, the curved outer side surface of one of the of the two retaining arms protruding outwardly from each of the two side openings, the shoulder portion of one of the of the two retaining arms engaging an end wall surface of each of the two side openings preventing the male member and the female member from separating, the first toothed surface of one first retaining block is spaced apart from the second toothed surface of each second retaining block of each of the two receiving spaces; and wherein, when the male member is located in the loaded position, the first toothed surface of one first retaining block engaging the second toothed surface of each second retaining block of each of the two receiving spaces through the first retaining block moving upwards through the top opening of the female upper surface to thereby prevent the male member and the female member from separating.