Patent ID: 8230938

Claim:
A fire prevention assembly, comprising: a main body, wherein a cylindrical hollow bore is formed in the main body and wherein a first connective area is formed in the frontal part of the main body and a second connective area is formed in the rear part of the main body; a first connective unit, wherein a hole is centrally formed in the outer surface of the first unit and another hole is centrally formed in the inside of the first connective unit, and wherein the first connective unit may be connected with the main body through the engagement between the first connective area and a connective area, which is formed in the inside of the first connective unit; a tubular piece, which is fitted in the cylindrical hollow bore of the main body, wherein a thinner section is formed in the rear portion of the tubular piece and extends axially out of the main body and a third connective area and another hollow bore are formed in the frontal portion of the tubular piece; a sensor unit, wherein a fourth connective area is formed in the frontal portion of the sensor unit and may be engaged with the second connective area and a bore is centrally formed in the sensor unit so that the portion of the tubular piece that extends out of the main body may be fitted in the bore; a second connective unit, wherein a through hole is centrally formed in the second connective unit and a connective area is formed in the rear portion of the second connective unit, and wherein the second connective unit may be connected with the tubular piece; a first flexible piece, which is fitted in the hollow bore of the tubular piece; a movable piece, wherein a thicker section with a larger diameter is formed in the rear portion of the movable piece and the movable piece is fitted in the hollow bore of the tubular piece, and wherein the rear end of the thicker section presses against the frontal end of the first flexible piece and the frontal portion of the movable piece has a small diameter to allow it to pass through the through hole of the second connective unit and the hole of the first connective unit; and a second flexible piece, which is fitted onto the frontal portion of the movable piece and is fitted inside the bore of the main body, and wherein one end of the second flexible piece presses against the inner circular surface of the first connective unit and the other end presses against the frontal surface of the second connective unit.