Pump head of air pump

A pump head of an air pump comprising:

• a head including an outer body, a handle, and an end cap, wherein the outer body includes a compartment extending therein, wherein the handle is connected to a first end of the outer body, and wherein the end cap is connected to a second end of the outer body;
• a retaining device received by the compartment and including a seat movable in the compartment and actuated by the handle, wherein the seat includes a first end and a second end spaced from the first end of the seat, with the first and second ends of the seat located intermediate the first and second ends of the outer body, wherein the seat includes a cavity extending therein, at least one slot extending radially from the cavity and through the seat and extending axially from a first side spaced from the first end of the seat and a second side spaced from the second end of the seat, and at least one retaining arm extending axially between the first and second sides of the at least one slot and resiliently swingable, and wherein the at least one retaining arm has a first end fixed to the first side of the at least one slot and a second end adjacent to, but not abutting the second side of the at least one slot, with the first and second ends of the at least one retaining arm located intermediate the first and second sides of the at least one slot;
• an air seal ring received by the compartment and selectively compressed by the seat, and wherein the air seal ring has an outer periphery section curved radially inwardly with respect to other periphery sections along a longitudinal length thereof;
• a valve insert disposed in the head, wherein the valve insert is movably restrained to the seat by the at least one retaining arm, wherein the valve insert is received by the cavity, and wherein the valve insert is biasedly connected to the seat;
• and
• a biasing member including a first end acting on the seat and a second end acting on the valve insert;
• wherein the compartment defines a first section and a second section larger than the first section in cross-section, wherein the compartment includes a middle periphery which extends radially outwardly from a first periphery delimiting the first section to a second periphery delimiting the second section and which defines a shoulder, wherein the at least one retaining arm includes a retaining lug, and wherein the seat is movable between a retracted position in which the second periphery abuts the retaining lug radially to a forward position in which the first periphery abuts the retaining lug radially;
• and
• wherein the handle defines a cam, wherein the seat is actuated by the cam, wherein the handle is pivotally connected to the outer body and is pivotal between a first position in which the seat is in the forward position and the air seal ring is compressed and a second position in which the seat is in the retracted position and the air seal ring is uncompressed, and wherein the handle resiliently pivots from the second position to the first position via the air seal ring;
• and
• wherein the at least one slot includes two slots and the at least one retaining arm includes two retaining arms, wherein the valve insert has a first width, wherein the seat in the retracted position includes the retaining lugs of the two retaining arms disposed separately at a second width, which is greater than the first width, wherein the seat in the forward position includes the retaining lugs of the two retaining arms disposed separately at a third width, which is smaller than the first width, and wherein the two retaining arms swing radially toward the valve insert when the seat moves from the retracted position to the forward position;
• and
• wherein the valve insert includes a middle portion forming a first ridge and an end portion forming a second ridge, wherein the first width measures the first ridge, and wherein the second ridge has a width greater than the second width.

A pump head of an air pump comprising:

• a head including an outer body, a handle, and an end cap, wherein the outer body includes a compartment extending therein, wherein the handle is connected to a first end of the outer body, and wherein the end cap is connected to a second end of the outer body;
• a retaining device received by the compartment and including a seat movable in the compartment and actuated by the handle, wherein the seat includes a first end and a second end spaced from the first end of the seat, with the first and second ends of the seat located intermediate the first and second ends of the outer body, wherein the seat includes a cavity extending therein, at least one slot extending radially from the cavity and through the seat and extending axially from a first side spaced from the first end of the seat and a second side spaced from the second end of the seat, and at least one retaining arm extending axially between the first and second sides of the at least one slot and resiliently swingable, and wherein the at least one retaining arm has a first end fixed to the first side of the at least one slot and a second end adjacent to, but not abutting the second side of the at least one slot, with the first and second ends of the at least one retaining arm located intermediate the first and second sides of the at least one slot;
• an air seal ring received by the compartment and selectively compressed by the seat, and wherein the air seal ring has an outer periphery section curved radially inwardly with respect to other periphery sections along a longitudinal length thereof;
• a valve insert disposed in the head, wherein the valve insert is movably restrained to the seat by the at least one retaining arm, wherein the valve insert is received by the cavity, and wherein the valve insert is biasedly connected to the seat;
• and
• a biasing member including a first end acting on the seat and a second end acting on the valve insert;
• wherein the compartment defines a first section and a second section larger than the first section in cross-section, wherein the compartment includes a middle periphery which extends radially outwardly from a first periphery delimiting the first section to a second periphery delimiting the second section and which defines a shoulder, wherein the at least one retaining arm includes a retaining lug, and wherein the seat is movable between a retracted position in which the second periphery abuts the retaining lug radially to a forward position in which the first periphery abuts the retaining lug radially;
• and
• wherein the handle defines a cam, wherein the seat is actuated by the cam, wherein the handle is pivotally connected to the outer body and is pivotal between a first position in which the seat is in the forward position and the air seal ring is compressed and a second position in which the seat is in the retracted position and the air seal ring is uncompressed, and wherein the handle resiliently pivots from the second position to the first position via the air seal ring;
• wherein the at least one slot includes two slots and the at least one retaining arm includes two retaining arms, wherein the valve insert has a first width, wherein the seat in the retracted position includes the retaining lugs of the two retaining arms disposed separately at a second width, which is greater than the first width, wherein the seat in the forward position includes the retaining lugs of the two retaining arms disposed separately at a third width, which is smaller than the first width, and wherein the two retaining arms swing radially toward the valve insert when the seat moves from the retracted position to the forward position;
• and
• wherein the valve insert includes a middle portion forming a first ridge and an end portion forming a second ridge, wherein the first width measures the first ridge, and wherein the second ridge has a width greater than the second width.