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.:
Date of Patent:
Mar. 31, 2026
Filed:
Jul. 21, 2023
United States of America As Represented BY the Secretary of the Navy, Arlington, VA (US);
John E. Miesner, Fairfax, VA (US);
The United States of America, as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
Example embodiments disclose a submersible impact test hammer comprising a resilient tip, an output shaft, an end closure, a pressure housing, a sealing bearing that supports the output shaft to the end closure, a slug, solenoid coils, slug shaft bolts, linear bearings that slidably mount the slug to the slug shaft bolts, and a spring between the slug and the output shaft. The pressure housing may be attached to the end closure such that the two enclose a watertight volume, and the sealing bearing may allow relative movement while preventing leakage into the watertight volume. The current through the solenoid coils may create an attractive magnetic force between the slug and the end closure accelerating the slug toward the end closure, and the impact of the slug against the output shaft may create a force pulse which is transmitted to the resilient tip and then to a test object.