ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,895, issued on May 27, was assigned to SOS Solutions Inc. (Tonasket, Wash.).
"Two speed trailer jack" was invented by Samuel R. Peacemaker (Gilbert, Ariz.) and Benjamin Peacemaker (Chandler, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A linear jack includes a first sleeve, a second sleeve disposed at least partially within the first sleeve, a third sleeve disposed at least partially within the second sleeve, and a translating screw disposed at least partially within the third sleeve. The linear jack may further include a cover sleeve coupled to the translating screw. The first sleeve is threadedly coupled to the second sleeve. The third sle...