Abstract: An extra-long air-water sandbag includes an inner bladder and an external bag. The external bag is a bag to hold the inner bladder and covers the external of the inner bladder. The inner bladder further includes an inner and outer layer container set which includes a gas container and a liquid container, and an extension layer gas container which is a bladder for containing gas and housed at the top, bottom or top and bottom thereof to increase the total length of space of gas container of the punching bag. As the length of gas container is increased, combat training for the feet is hence achieved.

Abstract: A rake for moving an air bubble entrapped between the surface of the water in and the underside of the top of a waterbed mattress to a vent through the top of the mattress is provided consisting of an elongated member and a handle. The elongated member has a lower surface lying in substantially a single plane and spaced apart beginning and end points. A straight line connecting the beginning and end points defines a geometric area for surrounding the bubble. The handle has one end connected to the member and another end extending above the plane defined by the lower surface of the member. The handle is used for manually urging the member downwardly against an upper side of the top of the mattress to trap the bubble within the geometric area. The handle is also used for guiding the geometric area with the bubble trapped therein into communication with the vent so that the air can be released to the atmosphere.

Abstract: A rake for moving an air bubble entrapped between the surface of the water in and the underside of the top of a waterbed mattress to a vent through the top of the mattress is provided consisting of an elongated member and a handle. The elongated member has a lower surface lying in substantially a single plane and spaced apart beginning and end points. A straight line connecting the beginning and end points defines a geometric area for surrounding the bubble. The handle has one end connected to the member and another end extending above the plane defined by the lower surface of the member. The handle is used for manually urging the member downwardly against an upper side of the top of the mattress to trap the bubble within the geometric area. The handle is also used for guiding the geometric area with the bubble trapped therein into communication with the vent so that the air can be released to the atmosphere.

Abstract: A rake for moving an air bubble entrapped between the surface of the water in and the underside of the top of a waterbed mattress to a vent through the top of the mattress is provided consisting of an elongated member and a handle. The elongated member has a lower surface lying in substantially a single plane and spaced apart beginning and end points. A straight line connecting the beginning and end points defines a geometric area for surrounding the bubble. The handle has one end connected to the member and another end extending above the plane defined by the lower surface of the member. The handle is used for manually urging the member downwardly against an upper side of the top of the mattress to trap the bubble within the geometric area. The handle is also used for guiding the geometric area with the bubble trapped therein into communication with the vent so that the air can be released to the atmosphere.

Abstract: A venting valve assembly for a waterbed having a water compartment is provided. The assembly includes an exhaust port for the water compartment which includes a stem portion, an upper cover threadedly coupled to that stem portion, and a lower cover also coupled to the stem portion. Defined within the stem portion is a valve chamber with which a vent hole through an upper wall of the stem portion and a plurality of through holes in the lower cover are in open communication. The assembly also includes a pontoon disposed within the valve chamber for buoyant displacement responsive to entry of water into that valve chamber. The pontoon is formed with a substantially hollow body to which a resilient plug cover is coupled, and on which a plurality of outwardly protruding strips are formed. As water from the waterbed's water compartment enters the valve chamber, the pontoon is displaced buoyantly upward until the resilient plug cover engages the vent hole.