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. 18, 2023
Filed:
Dec. 18, 2020
Joyson Safety Systems Germany Gmbh, Aschaffenburg, DE;
Walter Krauss, Neu Ulm, DE;
JOYSON SAFETY SYSTEMS GERMANY GMBH, Aschaffenburg, DE;
Abstract
The invention relates, inter alia, to a tensioner drive () for a seatbelt installation, having a tube (), at least one piston () which within the tube () is displaceable along a propulsion direction (P), and a gas generator () for generating a propulsion gas (G) and a propulsion pressure on a pressure-facing side of the piston (). According to the invention it is provided that the piston () on the pressure-facing side thereof has a first sealing element () which, upon triggering the gas generator (), is impinged with the propulsion pressure and seals a first tubular portion () of the tube () that is filled with propulsion gas (G) in relation to a second tubular portion () of the tube () that in the propulsion direction (P) lies behind said first tubular portion (); a second sealing element () which, upon triggering the gas generator (), is separated from the first sealing element () is disposed in the propulsion direction (P) behind the first sealing element (); wherein the second sealing element () is displaceable relative to the first sealing element (), and in the event of leakage of the first sealing element () and when impinged with pressure by the propulsion gas (G) is displaced along the propulsion direction (P) while enlarging the spacing (A) between the first sealing element () and the second sealing element ().