Ripeness Checker

The ripeness checker uses a movable pressing shaft and elastic mechanism to determine fruit ripeness by measuring relative displacement, addressing inaccuracies in existing methods and providing a cost-effective, sensor-free solution for home and commercial use.

JP7873366B1Active Publication Date: 2026-06-11泉 創太 +6
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Patent Information

Application Number
JP2026033803
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2026-03-04
Publication Date
2026-06-11
Estimated Expiration
2046-03-04

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Abstract

Its simple and inexpensive design allows for easy operation and determination of the ripeness of fruits and vegetables. [Solution] The ready-to-eat checker 1 comprises a cylindrical portion 10, a pressing shaft portion 20 supported within the cylindrical portion 10 so as to be able to move relative to it in the axial direction, a coil spring 30 as an elastic part that biases the pressing shaft portion 20 in the axial direction within the cylindrical portion 10, and a slit portion 14 formed in the cylindrical portion 10 and extending in the axial direction, and a protruding portion 24 formed in the pressing shaft portion 20 and inserted into the slit portion 14, which serve as acquisition parts for acquiring the relative displacement between the pressing shaft portion 20 and the cylindrical portion 10.
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Citation Information

Patent Citations

  • Hardness measuring instrument for vegetables and fruits equipped with pressure adjusting mechanism and method for measuring hardness of vegetables and fruits

    JP2004301695A

  • Hardness tester for standing tree and wood

    JP2011033523A

  • Hardness tester for wood, and for woody material

    JP2016121887A

  • Fruit ripeness tester

    JP3196004U

  • Ripe Fruit Indicator

    US20130298651A1