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. 16, 2019
Filed:
Sep. 03, 2014
Hilti Aktiengesellschaft, Schaan, LI;
HILTI AKTIENGESELLSCHAFT, Schaan, LI;
Abstract
A drive-in tool comprises a hand-held housing having an energy-transmitting element accommodated therein for transmitting energy to a fastener to be driven in; and a drive apparatus for driving the energy-transmitting element; wherein the drive apparatus comprises an energy accumulator having a gas chamber, which gas chamber can be filled with a driving gas at a defined overpressure, wherein the overpressure in the gas chamber is present as stored driving energy before a drive-in process is triggered, and wherein a piston of the energy-transmitting element forms a variable wall segment of the gas chamber, wherein the gas chamber has at least one further variable wall segment for changing the chamber volume, wherein a movement of the variable wall segment that enlarges the chamber volume charges a mechanical energy accumulator.