Foot pumps

A foot pump of the kind set forth comprising a base member, an operating member, and a pivotal connection between said members, said operating member in use being depressed by the user's foot from a raised position, a piston-and-cylinder assembly connected between the operating member and the base member and operative to compress or expel air when the operating member is depressed from its raised position, and return spring means operative to urge the operating member towards its raised position, the invention wherein said pivotal connection comprises pivot means carried by one of said members and hook means carried by the other thereof;

• said pivot pin means and said hook means being constructed and arranged to be hooked together to form the pivotal connection between the members, said hook means being so shaped as to define a groove which receives the pivot pin means, and said groove opening in a direction that when the pump is in use the force exerted to depress the operating member and the force exerted by the spring means tends to retain the pivot pin means in the hook means rather than to urge the pivot pin means out of the hook means.

A foot pump of the kind comprising a base member, an operating member, and a pivotal connection between said members, said operating member in use being depressed by the user's foot from a raised position, a piston-and-cylinder assembly connected between the operating member and the base member and operative to compress or expel air when the operating member is depressed from its raised position, and return spring means operative to urge the operating member towards its raised position, the invention wherein said pivotal connection comprises pivot pin means carried by one of said members and hook means carried by the other thereof;

• said pivot pin means and said hook means being constructed and arranged to be hooked together to form the pivotal connection between the members, said hook means opening in a direction that when the pump is in use the force exerted to depress the operating member and the force exerted by the spring means tends to retain the pivot pin means in the hook means rather than to urge the pivot pin means out of the hook means, said members having complementary concave and convex bearing surfaces spaced outwardly from the pivotal connection and operative in use to transmit reaction forces from one member to the other.

A foot pump of the kind comprising a base member, an operating member, and a pivotal connection between said members, said operating member in use being depressed by the user's foot from a raised position, a piston-and-cylinder assembly connected between the operating member and the base member and operative to compress or expel air when the operating member is depressed from its raised position, and return spring means operative to urge the operating member towards its raised position, the invention wherein said pivotal connection comprises pivot pin means carried by one of said members and hook means carried by the other thereof;

• said pivot pin means and said hook means being constructed and arranged to be hooked together to form the pivotal connection between the members, said hook means opening in a direction that when the pump is in use the force exerted to depress the operating member and the force exerted by the spring means tends to retain the pivot pin means in the hook means rather than to urge the pivot pin means out of the hook means, said members being formed with complementary abutment surfaces adjacent to the hook means and pivot pin means such that during assembly the hook means can be placed adjacent to the pivot pin means and on relative movement of the members the abutment surfaces engage each other and cause said means to become hooked together.