Self-lubricating Asphalt Rake with Integrated Reservoir
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Solution Overview
Problem
Workers face inefficiencies and inconvenience when using traditional asphalt rakes due to the frequent sticking of fresh asphalt, which requires constant cleaning and the cumbersome application of release agents, disrupting their workflow.
Innovation Solution
An asphalt rake with an integral reservoir and valve system that dispenses a release agent onto the rake head, preventing asphalt buildup and improving efficiency by allowing continuous lubrication during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If workers apply release agent to the rake head manually, then asphalt sticking is prevented, but workflow efficiency deteriorates due to time consumption and cumbersome operations
Solution Approach 1:
The patent combines the release agent storage function with the rake handle by integrating a reservoir cavity directly into the handle structure. This merging eliminates the need for separate release agent containers and manual application processes, allowing workers to access and apply release agent directly from the integrated reservoir at the working location, thereby preventing asphalt sticking while maintaining workflow efficiency
Solution Approach 2:
The patent implements a self-service mechanism where the rake itself provides the release agent through an integrated pump system activated by the worker during operation. The reservoir, pump, and application mechanism work together as a self-contained system that automatically delivers release agent to the rake head without requiring separate manual intervention or external containers, thus preventing asphalt sticking while preserving workflow continuity
2Reliability
If workers carry separate containers for release agent, then asphalt sticking is prevented, but ease of operation deteriorates due to cumbersome carrying and navigation
Solution Approach 1:
The patent merges the release agent storage and application functions into the rake structure itself by incorporating a reservoir cavity within the handle and integrating a pump mechanism. This eliminates the need for workers to carry separate containers and navigate to remote release agent locations, as the release agent is stored and applied directly at the working location, significantly improving ease of operation while maintaining effectiveness in preventing asphalt sticking
3Reliability
If workers stop to apply release agent from distant locations, then asphalt sticking is prevented, but loss of time increases due to workflow interruptions
Solution Approach 1:
The patent applies preliminary action by pre-storing the release agent within an integrated reservoir in the rake handle before the working process begins. The pump mechanism is pre-positioned and connected to deliver release agent directly to the rake head during operation. This preliminary preparation eliminates the need for workers to stop and navigate to distant release agent locations, preventing asphalt sticking while minimizing time loss and maintaining workflow continuity
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 self-lubricating asphalt rake reduces the need for frequent cleaning, enhances workflow efficiency, and allows for smoother asphalt handling, reducing user fatigue and improving the quality of the finished surface.
Implementation Method 1
A valve is disposed in the handle. The valve is configured to control fluid flowing from the cavity in the handle to the rake head.
Implementation Method 2
An asphalt rake having an integral method of storing and applying a release agent is needed
Data Source
AI summary
An asphalt rake includes a handle, a rake head, and a valve. The handle includes a cavity to hold a fluid, such as a release agent. The rake head has a passage in fluid communication with the outlet of the handle. The passage is in fluid connection with a support member outlet that is configured to be positioned apart from the crossbar by a gap. The valve controls fluid flowing from the cavity in the handle to the rake head. Fluid applied to tines of the rake head can prevent asphalt buildup on the rake head when smoothing or otherwise working with asphalt.