Abstract: An aeration element for gasification or aeration of liquids includes an essentially flattened, rigid support element having a substantially oval cross-section and corrugated outer surfaces, the corrugated outer surfaces including ridges defining grooves therebetween; a threaded opening for receiving a cooperating fitting for connection to an air supply; and a flexible membrane of elastomeric material disposed around the support element, The membrane has a plurality of slits, and wherein compressed gas is introduced between the support element and the membrane, the gas can escape via these slits into the surrounding liquid. A retaining clamp holds the membrane around at least one end of the support element. A check valve assembly prevents backflow of liquid, particles, sludge or debris into the interior of the support element.

Abstract: An aeration element for gasification or aeration of liquids includes an essentially flattened, rigid support element having a substantially oval cross-section and corrugated outer surfaces, the corrugated outer surfaces including ridges defining grooves therebetween; a threaded opening for receiving a cooperating fitting for connection to an air supply; and a flexible membrane of elastomeric material disposed around the support element, The membrane has a plurality of slits, and wherein compressed gas is introduced between the support element and the membrane, the gas can escape via these slits into the surrounding liquid. A retaining clamp holds the membrane around at least one end of the support element.

Abstract: A pet toy having a first part with internal threads, and a second part having external threads. When the first and second parts are threaded together by interengagement of their internal and external threads, they cooperate frictionally with one another to prevent, or at least to make difficult, an unintentional unthreading of the two parts from one another, wherein the threaded-together parts form a pet toy. To make unintentional unthreading even more difficult, additional engagement means can be provided on the first part and additional cooperating second engagement means can be provided on the second part.

Abstract: A toy for people or animals, especially for dogs, is provided. The disc-shaped or component ring toy has a body having optional recesses on an outer surface thereof. The body comprises a ring core of a first, hard polymeric material, and a covering of a second, soft polymeric thermosetting material, natural rubber, or mixture of a thermosetting and non-thermosetting material which may be frictionally connected, thermally and chemically bonded, or otherwise mechanically interconnected to the first polymeric material.

Abstract: A floatable pet toy comprising a hollow outer member, a sealed buoyant flotation bladder, and a rope section. The hollow outer member is made of rubber or polymeric material and has an inner cavity. The flotation bladder is disposed in the inner cavity of the outer member. A first end of the rope section is connected or anchored to the flotation bladder or to a washer disposed in the cavity, and a second end of the rope section extends beyond the outer member.

Abstract: A treat dispenser for animals, especially in the form of a rubber chew toy for dogs. The treat dispenser comprises a housing having a hollow interior and at least one aperture adapted to receive and dispense treats. The treat dispenser also has an at least partially helically extending insert disposed in the hollow interior of the housing and adapted to advance treats to the at least one aperture of the housing.

Abstract: A floatable pet toy comprising a hollow outer member, a sealed buoyant flotation bladder, and a rope section. The hollow outer member is made of rubber or polymeric material and has an inner cavity. The flotation bladder is disposed in the inner cavity of the outer member. A first end of the rope section is connected or anchored to the flotation bladder or to a washer disposed in the cavity, and a second end of the rope section extends beyond the outer member.

Abstract: A toy for animals, comprising an outer, hollow shell member of elastomeric material. The shell member has at least one hole to provide communication between the hollow interior and the exterior thereof. A hollow, flexible insert is disposed within the shell member and is at least partially in contact therewith. An acoustic cartridge is disposed in a port of a hollow insert.

Abstract: A toy for animals, comprising an outer, hollow shell member of elastomeric material. The shell member has at least one hole to provide communication between the hollow interior and the exterior thereof. A hollow, flexible insert is disposed within the shell member and is at least partially in contact therewith. The hollow insert can have a recessed portion or an integral center core. An acoustic cartridge is disposed in a port of the hollow insert.

Abstract: An apparatus for the gasification or aeration of liquids. Elongated aeration elements are connected to a distribution conduit and have an essentially rigid support tube having a lengthwise rounded groove about which is disposed a membrane of elastomeric material. Compressed gas introduced between the support tube and membrane escapes via slits in the membrane. An elastically deformable flange of a cylindrical portion of a fitting with a plastic semi-rigid saddle portion is disposed between the distribution conduit and one of the aeration elements, and is disposed in a bore in the conduit. The fitting has an essentially flat saddle portion, one side of which rests against the outer surface of the conduit, and the other side of which rests against an end of the aeration element. A hollow bolt is securely connected to the aeration element and is guided through a bore in the fitting into the interior of the conduit, where it is provided with apertures.

Abstract: A treat dispenser for animals, especially in the form of a rubber chew toy for dogs. The treat dispenser comprises a housing having a hollow interior and at least one aperture adapted to receive and dispense treats. The treat dispenser also has an at least partially helically extending insert disposed in the hollow interior of the housing and adapted to advance treats to the at least one aperture of the housing.

Abstract: A toy for animals, comprising an outer, hollow shell member of elastomeric material. The shell member has at least one hole to provide communication between the hollow interior and the exterior thereof. A hollow, flexible insert is disposed within the shell member and is at least partially in contact therewith. An acoustic cartridge is disposed in a port of a hollow insert.

Abstract: A toy for animals, comprising an outer, hollow shell member of elastomeric material. The shell member has at least one hole to provide communication between the hollow interior and the exterior thereof. A hollow, flexible insert is disposed within the shell member and is at least partially in contact therewith. The hollow insert can have a recessed portion or an integral center core. An acoustic cartridge is disposed in a port of the hollow insert.

Abstract: An apparatus for the gasification or aeration of liquids. Elongated aeration elements are connected to a distribution conduit and have an essentially rigid support tube having a lengthwise rounded groove about which is disposed a membrane of elastomeric material. Compressed gas introduced between the support tube and membrane escapes via slits in the membrane. An elastically deformable flange of a cylindrical portion of a fitting with a plastic semi-rigid saddle portion is disposed between the distribution conduit and one of the aeration elements, and is disposed in a bore in the conduit. The fitting has an essentially flat saddle portion, one side of which rests against the outer surface of the conduit, and the other side of which rests against an end of the aeration element. A hollow bolt is securely connected to the aeration element and is guided through a bore in the fitting into the interior of the conduit, where it is provided with apertures.

Abstract: A toy for people or animals, especially for dogs, is provided. The disc-shaped or component ring toy has a body having optional recesses on an outer surface thereof. The body comprises a ring core of a first, hard polymeric material, and a covering of a second, soft polymeric thermosetting material, natural rubber, or mixture of a thermosetting and non-thermosetting material which may be frictionally connected, thermally and chemically bonded, or otherwise mechanically interconnected to the first polymeric material.