A vibratory drive system comprises a rotatable drive shaft and an out-of-balance wheel that is coaxial with and rotatable relative to the drive shaft. A rotary transmission system couples the drive shaft to the wheel in order to transmit rotational movement of the drive shaft to the wheel. The rotary transmission system comprises a shaft gear, a wheel gear, and intermediate gears coupling the shaft gear to the wheel gear. The intermediate gears are carried by a gear carrier that is rotatable relative to the drive shaft, and are rotatable with respect to the gear carrier. The arrangement allows the phase angle of the out-of-balance wheel to be adjusted with respect to the drive shaft.

A screening assembly for a mobile bulk material processing apparatus is capable of adjustment of its position with respect to the base frame of the mobile bulk material processing apparatus in order to facilitate the transfer of material from the screen on to the processing unit, such as a crusher, by optimizing the height and the angle of operation of the screening assembly. The screening assembly is also capable of being folded into a compact arrangement, which is compliant to transport regulations, while also being convenient and safe for the operators. The screening assembly includes a base frame and at least two linking elements coupled at pivotable joints in such a way that when in operational position, the two linking elements are configured to adjust the height and the angle of inclination of the screen box to facilitate transfer of material from the screen to the crusher.

A screening assembly for a mobile bulk material processing apparatus is capable of adjustment of its position with respect to the base frame of the mobile bulk material processing apparatus in order to facilitate the transfer of material from the screen on to the processing unit, such as a crusher, by optimizing the height and the angle of operation of the screening assembly. The screening assembly is also capable of being folded into a compact arrangement, which is compliant to transport regulations, while also being convenient and safe for the operators. The screening assembly includes a base frame and at least two linking elements coupled at pivotable joints in such a way that when in operational position, the two linking elements are configured to adjust the height and the angle of inclination of the screen box to facilitate transfer of material from the screen to the crusher.

A feline litter box sieve system includes a screened lid connected by a hinge to a support frame that suspends an empty litter box in the top opening of a trash receptacle. L-shaped hooks suspend the support frame in the trash receptacle. Used litter is poured from a full litter box onto the screen. Clumps and feces are retained by the screen. Pivoting the lid to an open position dumps retained clumps and feces from the screen into the trash receptacle. While the lid is open, the held litter box containing unclumped sifted litter may be removed for use.

A feline litter box sieve system includes a screened lid connected by a hinge to a support frame that suspends an empty litter box in the top opening of a trash receptacle. L-shaped hooks suspend the support frame in the trash receptacle. Used litter is poured from a full litter box onto the screen. Clumps and feces are retained by the screen. Pivoting the lid to an open position dumps retained clumps and feces from the screen into the trash receptacle. While the lid is open, the held litter box containing unclumped sifted litter may be removed for use.

The invention proposes a grain-cleaning machine (10) comprising an envelope (12) with an inlet opening (13), an arrangement of sieves inside the envelope (12) and a vibration system designed to cause the sieve arrangement to oscillate. The sieve arrangement comprises at least two main sieve levels (14a, 14b, 14c) arranged the one above the other, with an inclination relative to the horizontal from a high side (L1) to a low side (L2), each main sieve level (14a, 14b, 14c) comprising respective fine sieves (141) followed by respective grain sieves (142), and under each fine sieve (141) respective fine-carrying channels (143) are arranged in communication with at least one outlet (18) for residues smaller than the grains, whereas under each grain sieve (142) respective grain-carrying channels (144) are arranged in communication with at least one grain outlet (19). The sieve arrangement further comprises at least one lower sieve level (16) with respective lower grain sieves (162), and under the lower grain sieves (162) respective lower grain-carrying channels (164) are arranged in communication with at least one grain outlet (19). The lower sieve levels (16) are arranged under the respective main sieve levels (14a, 14b, 14c) with an inclination relative to the horizontal from a high side (L3) to a low side (L4), wherein the low side (L2) of each main sieve level (14a, 14b, 14c) is in communication with the high side (L3) of the respective lower sieve level (16) through a vertical passage (17), and the low side (L4) of the lower sieve level (16) is in communication with at least one of the outlets (20) for residues larger than the grains.

Apparatus (200) for sorting mixed waste materials, comprising: a housing (260) configured to be vibrated to assist sorting; a screen (210) supported by the housing (260) and having an inlet end (212) for receiving waste materials and an outlet end (214) for discharging at least some waste received at the inlet end (212), the screen (210) comprising at least one portion (220) pivotally coupled adjacent the inlet end (212) to a substantially horizontal axle (222) mounted in the housing (260); and drive means (224,228) configured to pivot the at least one portion (222) of the screen (210) about the axle (222) with a controlled reciprocating action.

A modular exciter beam fitted to a vibratory screen assembly. The exciter beam spans between opposing side walls of the screen assembly. The modular exciter beam provides mounting for a pair of exciter mechanisms which are located substantially inside the side walls of the screen assembly.

A feline litter box sieve system includes a screened lid connected by a hinge to a support frame that suspends an empty litter box in the top opening of a trash receptacle. L-shaped hooks suspend the support frame in the trash receptacle. Used litter is poured from a full litter box onto the screen. Clumps and feces are retained by the screen. Pivoting the lid to an open position dumps retained clumps and feces from the screen into the trash receptacle. While the lid is open, the held litter box containing unclumped sifted litter may be removed for use.

A base supports an inclined screen having a uniform mesh selected to remove larger aggregate from a first cement mixture to form a second cement mixture that passes through the screen. A powered vibrator vibrates the screen to separate the concrete mixtures and larger aggregate. Springs and/or dampers in support legs isolate the vibrating screen from the base. A guide frame on the top surface of the screen guides the first concrete mixture along the screen and guide the separated aggregate out a bottom opening into an aggregate container. A support frame on the bottom surface of the screen stiffens the screen to help support the weight of the concrete. A concrete container, preferably wheeled, is below the screen to collect the second concrete mixture and move it to its use location.