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:
Feb. 16, 2021
Filed:
Apr. 12, 2018
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Dimitri Schott, Wachenroth, DE;
Harald Elendt, Altendorf, DE;
Eduard Golovatai-Schmidt, Hemhofen, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
The disclosure relates to a variable valve drive of a combustion piston engine with at least one gas exchange valve per cylinder, wherein each valve stroke is specified by a primary and secondary cam and transmitted to the gas exchange valve via a switchable cam follower that includes a primary lever and a secondary lever. The primary lever is in contact with the primary cam, and the secondary lever is in contact with the paired secondary cam and can be coupled to the primary lever by a coupling element. The coupling element includes a coupling pin, a locking pin, and an unlocking pin. Axially outer ends of the locking and unlocking pin protrude out of the secondary lever and are coupled to a shift rod via respective connection elements, the shift rod being longitudinally movable out of a rest position into a shift position by a linear actuator.