Large-area washer
AssigneeSFS Industrie Holding AG
InventorsHelmut Osterle, Stefan Baumgartner
Life of this patent
Estimating the term…
Abstract
A large-surface plain washer (1) has an opening (5) for inserting a fastener. Engagement elements (1) that increase the engagement with a plate and/r web to be fastened are provided at the surface of the washer (1) that faces in the fastening direction. In addition, projecting spacers (17) shaped as tongues (26) that become effective when several washers (1) are stacked are provided at the lower side of the washer (1). The free end of these tongues (26) may be supported on the top side of the plain washer located directly underneath, so that the washers may be stacked without causing the engagement elements (13) of different washers (1) to engage each other. Individual washers (1) may thus be easily separated from a stack of washers (1), either by rotating or by moving the lowermost washer.
Claims19
A large area washer with a main body and an opening (5) for inserting a fastener (6), comprising protruding elements (13), which protrude away from the washer in the fastening direction for increasing the friction and meshing with at least one plate and a sheet (3) to be fastened, spacers (17) in the form of rectangular shaped brackets (26) bent at an oblique angle with respect to the main body of the washer, the spacers (17) extending away from the washer in the fastening direction, wherein the height (H) of the spacers (17) from a foot thereby up to the highest elevation away from the washer (1) being equal to or greater than the height (L) of the protruding elements (13) so as to enable stacking of the washers (1).
Dependencies are inferred from the claim text.