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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10677328 B1

PDFFull Text
Date of Patent:
Jun. 09, 2020

Filed:

Aug. 04, 2017

Bridge-type ball screw and manufacturing method thereof

Applicant:

Ntn Corporation, Osaka, JP;

Inventor:

Tatsunori Shimizu, Iwata, JP;

Assignee:

NTN Corporation, Osaka-shi, JP;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

William C Joyce

Assistant Examiner:

Randell J Krug

Int. Cl.
CPC ...
F16H 25/22 (2006.01); B21D 39/00 (2006.01); B21K 1/70 (2006.01); B22F 3/02 (2006.01); F16H 25/24 (2006.01); B22F 3/12 (2006.01); C21D 1/18 (2006.01);
U.S. Cl.
CPC ...
F16H 25/2223 (2013.01); B21D 39/00 (2013.01); B21K 1/70 (2013.01); B22F 3/02 (2013.01); B22F 3/12 (2013.01); C21D 1/18 (2013.01); F16H 25/24 (2013.01); F16H 2025/2481 (2013.01);
Abstract

A method of manufacturing a bridge-type ball screw () with a bridge member () fit into a nut bridge window (). The bridge member () has a linking groove () with a rolling track that acts as a circulating path. After the bridge member () is fit into the nut bridge window (), a cylindrical mandrel (), with projections (), is inserted into the nut (). An upper die () restricts the upper surface of the bridge member () and is lowered while the nut () is held between the upper die () and the mandrel (). A connection part is subject to plastic working by the projections () of the mandrel (). The bridge member () is simultaneously deformed by the upper die () to secure the bridge member () into the nut bridge window ().

Find Patent Forward Citations

Shimizu, Tatsunori. (2020). Bridge-type ball screw and manufacturing method thereof (U.S. Patent No. 10677328). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10677328

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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