Pet Waste Retrieval Device with Quick-Release Bag
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Solution Overview
Problem
Conventional methods for picking up pet waste, such as using plastic trash bags, are ineffective in capturing all droppings, especially on rough surfaces, and pose a sanitary risk due to direct contact with the waste.
Innovation Solution
A pet waste retrieval device featuring a U-shaped harness with a bag and quick-release buckle, adjustable to fit various animal sizes, which captures excrement via a connection mechanism and allows for easy disposal and sealing of the waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plastic trash bag is used to pick up pet waste, then the user can dispose of waste, but the method is ineffective in capturing all droppings especially on rough surfaces and poses sanitary risk due to direct contact
Solution Approach 1:
The patent introduces a specialized retrieval device with a collection bag and retrieval tool as an intermediary between the user and pet waste. The device includes a bag positioned to receive droppings directly from the source, eliminating the need for the user to directly contact waste with hands or simple plastic bags. The retrieval mechanism allows waste to be pulled into the bag without user exposure.
Solution Approach 2:
The device segments the waste collection process into distinct functional components: a collection bag to receive waste, a retrieval mechanism to pull waste into the bag, and a disposal system. This segmentation allows each component to perform its specific function effectively, with the bag capturing waste on various surfaces and the retrieval mechanism ensuring complete collection without user contact.
2Productivity
If a simple plastic trash bag is used, then the device complexity is low, but the productivity and completeness of waste retrieval is poor
Solution Approach 1:
The retrieval device combines multiple functions into a single integrated system: the bag serves as both collection container and disposal mechanism, the retrieval tool functions as both puller and guide, and the overall device works on various surface types (grass, gravel, pavement). This multi-functionality increases retrieval completeness without proportionally increasing complexity.
Solution Approach 2:
The device is prepared in advance with the bag positioned and attached to the retrieval mechanism before waste collection begins. The bag is pre-configured to hang or position itself optimally for receiving droppings, and the retrieval tool is ready to immediately pull waste into the bag when needed, ensuring complete and efficient collection.
3Ease of operation
If the user handles waste directly through thin plastic bags, then the operation is simple, but the user experiences squeamish condition and sanitary issues
Solution Approach 1:
The retrieval device acts as an intermediary that completely eliminates user contact with waste. The mechanical retrieval mechanism pulls waste into the bag without requiring the user to touch or manipulate the waste directly. The bag serves as a barrier that contains waste throughout the entire collection and disposal process.
Solution Approach 2:
The device performs the waste collection function autonomously through its mechanical retrieval mechanism, which automatically pulls waste into the bag without requiring direct user intervention or contact. The system serves itself by using the retrieval tool to accomplish the collection task that would otherwise require manual handling.
Data Source
AI summary
A pet waste device is an octagonal padded ring having a plurality of hooks on the outside of the ring each of which removably retain a pet waste bag. The padded ring may be removably secured to the back of a pet such as a dog.


