Hybrid Frame Boat with Drop-Stitch Bladders and Keel Beam
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Solution Overview
Problem
Inflatable boats with drop-stitch bladders are prone to punctures, and when one inflatable portion fails, the entire boat often needs to be replaced, while traditional inflatable boats with flexible floors provide rough rides and poor tracking, and those with rigid floors are inconvenient to transport.
Innovation Solution
A hybrid frame boat design incorporating a keel beam and inflatable bladders with high-pressure drop-stitch technology, combined with a rigid cover and adjustable thwarts, which increases rigidity and allows for easier transportation by deflating components for storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If drop-stitch bladders are used to create rigid floors and sides, then boat rigidity and tracking are improved, but the bladders become prone to puncture and require complete boat replacement when damaged
Solution Approach 1:
The patent divides the inflatable structure into multiple independent bladders (first bladder for side, second bladder for floor, third bladder for other side) instead of using integral drop-stitch bladders. This segmentation allows individual bladders to be replaced without discarding the entire boat, resolving the reliability issue while maintaining rigidity through the distributed inflatable structure.
Solution Approach 2:
The patent applies different structural qualities to different parts of the boat - using inflatable bladders for sides and floors while incorporating a rigid floor panel in certain embodiments. This local differentiation allows the boat to achieve overall rigidity without requiring all components to be highly resilient, addressing both strength and reliability concerns.
2Stability of the object's composition
If rigid floors (plywood, aluminum) are used in inflatable boats, then boat footprint is maintained when tubes are deflated, but convenient transporting becomes difficult
Solution Approach 1:
The patent employs inflatable bladders that can dynamically change volume - inflated for use to maintain boat shape and footprint, deflated for storage to enable compact transport. This dynamic adaptability resolves the contradiction between maintaining structural integrity and achieving transport convenience.
Solution Approach 2:
The patent uses inflatable bladder structures that provide rigid-like support when pressurized but can be collapsed when deflated. These flexible shells maintain the boat's functional form during operation while allowing compact storage during transport, eliminating the need for permanent rigid floors.
3Ease of operation
If flexible floors are used in inflatable boats, then transport convenience is improved, but ride quality and tracking become poor
Solution Approach 1:
The patent combines inflatable bladder structures with rigid floor panels in certain embodiments, creating a composite construction that provides both the transport convenience of flexible components and the ride quality of rigid structures. The rigid panel maintains hull integrity while the inflatable portions allow for easy deflation and storage.
Data Source
AI summary
Embodiments are directed to a hybrid frame boat. The hybrid frame boat may include a cover and a drop-stitch port bladder, a drop-stitch starboard bladder, and a keel beam that may each couple to the cover. The cover may have an aft end portion, a forward end portion, a port side, a starboard side, a longitudinal length extending from the aft end portion to the forward end portion. The drop-stitch port bladder may extend along one or more portions of the port side of the cover. The drop-stitch starboard bladder may extend along one or more portions of the starboard side of the cover. The keel beam may extend along one or more portions of the longitudinal length of the cover between the drop-stitch port bladder and the drop-stitch starboard bladder.