IP Library › Granted Patent US 1,115,510
Granted Patent S1
US 1,115,510 · App. 29/938,317 · Granted Mar 3, 2026

Torsion coil spring

Inventor: Hidetaka Dobashi (Kofu, JP)
Assignee: Crossfor Co., Ltd.
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Quick Facts
Patent No.
US 1,115,510
App. No.
29/938,317
Granted
Mar 3, 2026
Kind
S1
Claims (1)

The ornamental design for a torsion coil spring, as shown and described.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 19, 2024
From: DOBASHI, HIDETAKA
To: CROSSFOR CO., LTD.
Reel/Frame 067167/0791 →
Priority Claims (1)
JP 2023-023960 D · Nov 20, 2023 · national
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TH 165585 · 2017 [cited by applicant]
Amazon.co.uk, Torsion Spring, Jun. 18, 2015, https://tinyurl.com/36sv9jhc (Year: 2015). [cited by examiner]
Office Action issued on Sep. 2, 2025, in corresponding Thai Application No. 2402001541, 7 pages, with partial English translation. [cited by applicant]