Title:
TELESCOPIC MOTION BOLT
Document Type and Number:
Japanese Patent JP2019157944
Kind Code:
A
Abstract:
To provide a bolt that can positively prevent looseness.SOLUTION: Telescopic motion bolts (1, 2, 3, 4) comprise a movable part 1 having threads 1a to 1g at a cylindrical surface of a first slant-cut column having a first opposing surface S1 as a cut slant surface; a fixing part 2 in which threads 2a to 2g that can be continuous to the threads 1a to 1g of the movable part 1 at the cylindrical surface of the first slant-cut column with a second opposing surface S2 opposing against the first opposing surface S1 through a variable gap acting as a cut slant surface, the fixing part forming a substantial column-like shape in combination with the movable part 1; and a gap displacement mechanism 4 for moving the movable part 1 in relation to the fixing part 2 along a direction of approximate column-like shafts constituted by the first and second slant-cut columns and displacing the variable gap.SELECTED DRAWING: Figure 1
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Inventors:
KOYAMA ISAO
Application Number:
JP2018042982A
Publication Date:
September 19, 2019
Filing Date:
March 09, 2018
Export Citation:
Assignee:
KOYAMA ISAO
International Classes:
F16B39/02; F16B35/00; F16B39/28; F16B41/00
Domestic Patent References:
| JPS607410U | 1985-01-19 | |||
| JPS49145071U | 1974-12-13 | |||
| JPS6173088A | 1986-04-15 |
Foreign References:
| WO2013154437A1 | 2013-10-17 |
Attorney, Agent or Firm:
Suzuki Isobe