Removable Scooping Device for Litter Receptacle
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Solution Overview
Problem
Existing litter box systems face challenges in efficiently sifting litter without dispersing dust, breaking clumps, and accommodating various litter types, while also maintaining a compact design and preventing bacterial growth.
Innovation Solution
A litter box design featuring a base container with a removable scooping device that includes a sifting grate, allowing for controlled sifting along a defined pathway, and an optional top cover for litter containment, which separates waste from clean litter without sharp edges or corners, and allows for easy cleaning and compact aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gravitational sifting is used to automate litter box cleaning, then the cleaning process becomes easier and more automated, but litter dust is raised into the air and softer litter clumps break apart into small pieces
Solution Approach 1:
The sifting process is segmented into two distinct phases: a lifting phase that collects waste without disrupting clumps, and a sifting phase that separates waste from clean litter. This segmentation allows each phase to be optimized independently, preventing dust raise and clump breakdown while maintaining automation benefits
Solution Approach 2:
The scooping device transitions between different positions and orientations dynamically - lifting vertically to collect waste, then rotating to a sifting position where clean litter falls through the grate. This dynamic movement enables the system to achieve both automated cleaning and minimal litter disruption
2Extent of automation
If a rake mechanism is used to extract waste from litter, then waste removal is automated, but the system becomes bulky and encroaches on usable litter surface area
Solution Approach 1:
The scooping device is designed to nest within the litter box when not in use, and the sifting grate is integrated into the scoop structure itself. This nesting approach minimizes the space occupied by automated components, preserving maximum litter surface area while maintaining automation functionality
Solution Approach 2:
The scooping device serves multiple functions: it collects waste, transports it to the sifting area, and the integrated grate performs the separation function. This multi-functionality eliminates the need for separate bulky components, automating waste removal while preserving litter space
3Extent of automation
If circular litter receptacles with rotating grates are used, then automated sifting is achieved, but complicated components add bulkiness and provide ideal locations for bacteria to grow
Solution Approach 1:
The sifting function is extracted from a complex rotating grate mechanism and simplified to a stationary grate integrated into a manually operable scoop. This extraction eliminates complicated rotating components while maintaining automated sifting capability through simple user interaction
Solution Approach 2:
The system is designed to be self-cleaning through the sifting process, where clean litter falls through the grate and waste is removed. The simple design with fewer components reduces places where bacteria can grow, and the self-service nature minimizes the need for additional cleaning mechanisms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables thorough and predictable sifting of litter, reduces litter scatter, and maintains a clean environment by containing odors and preventing bacterial growth, while allowing for aesthetically pleasing and space-efficient designs.
Implementation Method 1
gravitational sifting. Two different automated sifting methods have been disclosed in patents U.S. Pat. Nos. 7,647,889 and 6,463,881 where the container holding the litter is rotated such that the clean litter will flow with gravity through a screen that separates small litter granules from the larger waste excreta.
Data Source
AI summary
One embodiment of a scooping litter receptacle, which forms a compact cylindrical exterior design, includes a scooping device that can move within a litter filled channel inside a base container. The scoop is able to pass through the entire bed of litter granules, thus, separating waste material from usable litter. The scoop can then be lifted from the litter receptacle by the handle so that the complete scooping process can be done by the user without the user coming into contact with parts that have traversed through the soiled litter mass. Also, the scooping device is not fixed to the base container which makes it easy to remove and discard the waste as well to remove for cleaning. Further, the base container is designed such that the scooping device can be stored on the outside of the litter receptacle. An optional top cover allows for the litter receptacle to be enclosed which helps reduce litter tracking outside the litter receptacle as well as providing a compact and tidy appearance.