U-Shaped Sprinkler Cap Removal Tool for Gear Drive Maintenance

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Solution Overview

Problem

Gear drive sprinklers are difficult to maintain or repair due to their positioning, which makes it challenging to access and remove the cap without excavating soil or grass around the sprinkler.

Innovation Solution

A U-shaped sprinkler head engagement tool with a connector rod and handle allows for the removal of the cap by positioning the U-shaped head into the sprinkler cap's depressions and rotating it, providing access to the internal gear drive system without digging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the sprinkler is positioned with the top of the head even with the sod or ground for safety protection, then the sprinkler head is protected from abuse, but it becomes difficult to remove the cap without excavating soil or grass

Engineering Contradiction:
Improveprotection from abuseVSAvoidcap removal accessibility
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent introduces a specialized removal tool as an intermediary device. This tool features a U-shaped head with prongs that fit into depressions on the sprinkler cap, allowing users to grip and rotate the cap without directly touching it or excavating the surrounding soil. The tool acts as a mediator between the user and the sprinkler cap, enabling cap removal while preserving the installed position of the sprinkler head.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the sprinkler head is positioned at ground level for safety, then potential damage from lawnmowers or stepping is prevented, but maintenance and repair access is restricted

Engineering Contradiction:
Improveprotection from damageVSAvoidinternal gear drive system access
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The removal tool serves as an intermediary that enables maintenance access without altering the sprinkler's installed position. The U-shaped head with its prongs fitting into cap depressions provides a gripping mechanism that allows technicians to access and remove the cap for internal gear drive system maintenance while the sprinkler remains protected at ground level.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The tool's U-shaped head is segmented into multiple prongs that can independently engage with the depressions on the cap. This segmentation allows the tool to accommodate different cap sizes and configurations, providing versatile access for maintenance while preserving the sprinkler's protective positioning.

Inventive Principle:
Principle #1Segmentation

3Loss of substance

If manual cap removal is attempted without excavation, then soil and grass are preserved, but sufficient gripping space and leverage are insufficient

Engineering Contradiction:
Improvesoil and grass preservationVSAvoidgripping and rotational leverage
Core Design Contradiction:
Loss of substanceVSEase of operation

Solution Approach 1:

The removal tool provides the necessary gripping space and leverage by inserting its prongs into the depressions on the cap. This intermediary device creates a secure grip point that allows users to apply rotational force without needing to excavate the surrounding area or use excessive hand strength. The tool's handle extends the leverage arm, making cap removal feasible while preserving the installed position.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The tool extends the interaction into a third dimension by providing a handle that can be rotated in the air above the cap. This dimensional extension allows users to apply torque without needing lateral space for hand placement or knee placement for leverage, eliminating the need for excavation while providing sufficient rotational leverage.

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

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

Enables easy removal of the sprinkler cap without excavating soil or grass, facilitating maintenance and repair of gear drive sprinklers by transferring rotational torque from the handle to the U-shaped head.

Implementation Method 1

The handle is then rotated typically clockwise, although some sprinkler heads are reverse threaded, until the cap can be removed

Methodology Applied
Scientific EffectTorque: Torque

Implementation Method 2

positioning each of the ends of the arms of the U-Shaped head into opposing depressions in the cap of a gear drive sprinkler

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS20240091912A1Sprinkler Cap Removal Tool
Publication Date: 2024.03.21 FISHER DAVID M
  • US20240091912A1 patent drawing
  • US20240091912A1 patent drawing
  • US20240091912A1 patent drawing

AI summary

An improved sprinkler head removal tool for use in removing sprinkler heads from cans positioned in the ground. The sprinkler heads have a series of indentations positioned around the head of the sprinkler. The improved sprinkler head removal tool has a U-shaped head that is configured to span across the head such that the opposing arms or prongs of the U-shape are positioned in opposing depressions. The U-shaped head is connected to a handle, which a user grasps and rotates. The U-shaped head is preferably configured to thread onto the handle of a plastic pipe nipple extractor or other sprinkler head tool.