Automatic Duck Decoy Jerk String for Quiet Portable Motion
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Solution Overview
Problem
Conventional automatic duck decoy systems are either too heavy, complex to set up, loud, or do not produce enough motion to effectively attract waterfowl, making them impractical for hunters who need a lightweight and portable solution.
Innovation Solution
A lightweight, portable automatic duck decoy jerk string device with an enclosure, electric motor, gear system, and remote control, which moves decoys back and forth to create lifelike motion without the need for manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If conventional automatic jerk strings are used, then automation is achieved, but the device becomes too heavy and complex to set up
Solution Approach 1:
The device is divided into separate functional modules: a motor unit housed in an enclosure, a separate decoy line system with floats, and a mounting structure. This segmentation allows each component to be optimized independently and simplifies setup by allowing pre-assembly of the motor unit.
Solution Approach 2:
The motor and control components are extracted into a separate enclosed unit, isolating the complex automated mechanism from the simple decoy line system. This extraction allows the automation function to be achieved while keeping the overall system manageable and portable.
2Extent of automation
If conventional automatic jerk strings are used, then automation is achieved, but the device becomes too heavy
Solution Approach 1:
The patent uses lightweight, inexpensive components such as a small motor, plastic floats, and simple line systems that can be easily replaced or reset. This approach prioritizes portability and ease of setup over durability, allowing hunters to carry and deploy the system quickly without worrying about heavy construction.
3Extent of automation
If conventional automatic jerk strings are used, then automation is achieved, but the device is loud and scares away ducks
Solution Approach 1:
The system uses a mechanical reel mechanism that winds and unwinds the decoy line in a controlled, gradual manner rather than using high-speed motors. This dynamic control of the line movement reduces mechanical noise and creates more natural-looking decoy motion that doesn't alarm the ducks.
4Extent of automation
If conventional automatic jerk strings are used, then automation is achieved, but not enough motion is produced to attract waterfowl
Solution Approach 1:
The system incorporates floats attached to the decoy line that create water surface disturbances and vibrations as they move. This mechanical interaction with the water produces visible ripples and motion that effectively attracts waterfowl, compensating for the gentle movement of the decoys themselves.
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 device provides a cost-effective, easy-to-set-up solution that adds significant movement to the decoy spread, attracting waterfowl without scaring them off, and can be remotely controlled for adjustable motion.
Implementation Method 1
a gear system (14) connected to the motor drive shaft (16) to reduce the rotational speed of the motor drive shaft (16)
Implementation Method 2
a biasing device (42) that biases the jerk line (38) in a direction away from the enclosure (2)
Data Source
AI summary
An automatic duck decoy jerk string device 1 having an enclosure 2, a mounting pole 6, a lockable mount 8 for mounting the enclosure 2 at different heights on the mounting pole 6, an electric motor 10 in the enclosure 2, a battery 12 configured to power the electric motor 10, a speed control 13 to control a rotational speed of a motor drive shaft 16, an elongated slider 20 partially inside the enclosure 2 and partially outside the enclosure 2, the elongated slider 20 moves back-and-forth towards the inside of the enclosure and away from the inside of the enclosure, a gear system 14 connected to the motor drive shaft 16 to reduce the rotational speed of the motor drive shaft 16 and rotate a drive arm 18, and a link arm 28 is rotatably mounted to the drive arm 18 and rotatably mounted to the first slider end 22. A method of using the jerk string device to move duck decoys 48 on a jerk line 38 connected to the elongated slider 20.