Portable Table Saw with Pivotable Rail-Mounted Blade

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Solution Overview

Problem

Existing tools for installing laminate flooring, such as table saws, are large and heavy, making them difficult to transport and use on-site, while handheld saws are labor-intensive and lack precision for accurate cuts, especially for miter and rip cuts in trim pieces.

Innovation Solution

A portable table saw system with a base, support posts, and pivotable saw mounted on rails, allowing for precise angled cuts and accommodating work pieces of varying heights, providing the necessary portability and accuracy for on-site use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a table saw is used for precise cutting of laminate flooring and trim, then manufacturing precision is improved, but the device becomes large and heavy making it difficult to transport

Engineering Contradiction:
Improvecutting precisionVSAvoidsaw weight
Core Design Contradiction:
Manufacturing precisionVSWeight of moving object

Solution Approach 1:

The portable table saw system divides the traditional table saw into separate modular components: a base unit with support posts, a separate saw assembly with blade, and interchangeable rails. This segmentation allows the heavy blade mechanism to be separated from the base, enabling precise cutting while maintaining portability as the components can be transported separately and assembled at the worksite.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The saw assembly is designed to be movable along the support rails rather than fixed, allowing dynamic positioning for different cut locations. The saw can be slid to various positions on the rails and locked in place, providing both portability and stability during operation. This dynamic configuration enables the system to adapt to different workpiece positions while maintaining cutting precision.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If a portable saw design is used to improve transportability, then ease of operation is improved, but manufacturing precision deteriorates compared to traditional table saws

Engineering Contradiction:
ImproveportabilityVSAvoidcutting precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The system includes pre-assembled support posts with integrated rails and measurement markings. The base unit is prepared in advance with all necessary mounting components, allowing for quick setup at the worksite without requiring complex assembly. The pre-configured structure ensures that when the saw is assembled, it immediately provides the precision needed for accurate cutting.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The portable table saw incorporates self-aligning features where the saw assembly automatically positions itself relative to the workpiece using the rail system and fence mechanisms. The system includes self-leveling components and automatic blade alignment features that reduce the skill level required for operation while maintaining cutting precision, allowing users to achieve accurate results without extensive training.

Inventive Principle:
Principle #25Self-service

3Manufacturing precision

If traditional table saws are used for miter cuts of trim pieces, then manufacturing precision is improved, but the device cannot accommodate work pieces of increased height

Engineering Contradiction:
Improvemiter cut precisionVSAvoidworkpiece height accommodation
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The portable table saw system is designed as a multi-functional tool that can handle various workpiece types and sizes. The adjustable fence and miter gauge accommodate different workpiece heights and angles, while the extendable rails provide support for longer pieces. The same base unit can perform rip cuts, cross cuts, and miter cuts on both laminate flooring and trim pieces of varying heights, eliminating the need for multiple specialized tools.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system adds vertical adjustability through height-adjustable fence and miter gauge mechanisms that can accommodate workpieces of different heights. The rails are positioned at adjustable heights above the base, allowing the saw to handle both low-profile laminate planks and taller trim pieces. This vertical dimension adjustment enables the single device to replace multiple tools for different workpiece dimensions.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

4Weight of moving object

If handheld saws are used to reduce equipment weight, then portability is improved, but manufacturing precision deteriorates due to labor-intensive operation

Engineering Contradiction:
Improveequipment weightVSAvoidcutting accuracy
Core Design Contradiction:
Weight of moving objectVSManufacturing precision

Solution Approach 1:

The portable table saw introduces an intermediary guide system consisting of rigid support rails and a stable base that mediates between the handheld saw and the workpiece. Instead of relying solely on handheld stability, the system uses the rail-guided saw mechanism to provide a stable cutting path. This intermediary structure eliminates the precision problems of handheld saws while keeping the overall system lightweight and portable.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS8671811B2Pivoting saw system
Publication Date: 2014.03.18 NANJING CHERVON IND
  • US8671811B2 patent drawing
  • US8671811B2 patent drawing
  • US8671811B2 patent drawing

AI summary

A portable table saw in one embodiment includes a base, a first support post and a second support post, each of the first and second support post extending upwardly to a location higher than the base, at least one support rail having a first end portion supported by the first support post and a second end portion supported by the second support post, a saw movably mounted to the at least one support rail at a location between the first end portion and the second end portion, the saw positioned above the base and movable along the at least one support rail, and a first pivot mechanism configured to pivot the saw with respect to the base.