Hand-Operated Vacuum Puller Manual Piston Mechanism
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Solution Overview
Problem
Conventional pneumatic pulling devices require connection to an air compressor and electrical power, limiting their portability and usability to specific locations, making them impractical for general consumers.
Innovation Solution
A hand-operated vacuum pulling device with a piston assembly and ring-shaped cover assembly that induces vacuum manually, allowing for increased suction power and independent operation without an air compressor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional pneumatic puller is used, then strong suction force can be generated, but it requires connection to an air compressor and electrical power, limiting portability
Solution Approach 1:
The patent extracts and eliminates the air compressor component from the system, replacing it with a manual vacuum pump. This removes the dependency on external electrical power and fixed installation, enabling the device to be portable and usable at any location while maintaining the suction force generation capability through manual operation
Solution Approach 2:
The device becomes self-sufficient by incorporating a manual vacuum pump that operates independently without external power sources. The user can manually operate the pump to generate and maintain vacuum pressure, making the system self-serviceable and portable for field operations
2Reliability
If a conventional pneumatic puller is used, then reliable suction can be maintained, but it requires fixed installation and external power supply
Solution Approach 1:
The manual vacuum pump enables the device to operate independently without external power supply or fixed installation. The user can manually pump to create and maintain vacuum pressure, providing operational independence while ensuring reliable suction through direct mechanical control of the vacuum generation process
3Adaptability or versatility
If a manual vacuum pump is used instead of air compressor, then portability is improved, but suction power may be reduced
Solution Approach 1:
The patent incorporates a check valve mechanism that dynamically controls the vacuum pressure maintenance. The check valve prevents vacuum leakage and allows the manual pump to build and sustain high vacuum pressure over time, compensating for the lower instantaneous power output of manual operation and maintaining effective suction power for dent pulling operations
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 hand-operated device provides a portable and cost-effective solution for generating strong suction forces, comparable to pneumatic pullers, without the need for external power or fixed installations.
Implementation Method 1
The piston assembly is manually operable to induce a vacuum inside the cylinder
Implementation Method 2
make a spring contained in the piston assembly stiffer and increase the suction power of the suction cup
Implementation Method 3
a suction cup 2 at a front end of the puller for holding an article with a suction force induced by the vacuum
Data Source
AI summary
A hand-operated vacuum pulling device includes a shank, over which a backward ram is slidable fit. The shank has a front end to which a suction cup is attached and a rear end to which a handgrip defining a cylinder and having a pressure relief seat is attached. The pressure relief seat forms a ram stop at a joint thereof with the shank. The handgrip has a rear end to which a ring-shaped cover assembly is attached. The piston assembly is manually operable to induce a vacuum inside the cylinder. And then, the ring-shaped cover assembly can be manually operated to pull the piston assembly backward for repeated operation of the piston assembly to thereby make a spring contained in the piston assembly stiffer and increase the suction power of the suction cup. The backward ram can be quickly moved backward to impact the ram stop for improving pulling effect.