US12540783 - Bolt head of a breech block and breech block with such a bolt head

The patent describes a bolt head for a breech block that features a base element and a breech face, with an annular bezel made of multiple detachable parts. Additionally, it includes an inwardly curved guide surface on the back of the base element to assist in guiding pivotable locking elements.

Claim 1

1 . A bolt head of a breech block, the bolt head comprising a base element, a breech face arranged on a front of the base element, and a bezel enclosing the breech face in annular fashion, wherein the bezel is formed by a plurality of bezel parts detachably fastened to the base element, and wherein an inwardly curved guide surface is provided on a back of the base element for guiding pivotable locking elements. wherein the bezel is formed by a plurality of bezel parts detachably fastened to the base element, and wherein an inwardly curved guide surface is provided on a back of the base element for guiding pivotable locking elements.

Google Patents

https://patents.google.com/patent/US12540783

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12540783