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:
Apr. 28, 2026
Filed:
May. 16, 2023
Caterpillar Inc., Peoria, IL (US);
Koushik Kabiraj, Jharkhand, IN;
Caterpillar Inc., Peoria, IL (US);
Abstract
A down-the-hole hammer includes a barrel having a longitudinal axis and defining a proximal chamber and a distal chamber, a piston slidable within the barrel between the proximal chamber and the distal chamber, a control tube having a slot, a check valve member rotationally fixed to the control tube, and an air distributor having a plurality of sets of ports. Each set of ports includes a proximal port and a distal port longitudinally spaced apart from one another. The control tube is indexable between a plurality of rotational positions by rotating the check calve member to adjust which of the sets of ports of the air distributor is aligned with the slot of the control tube.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile