Back to results
US 7,610,940 B2Granted
Crossbar for heald-carrying frames of weaving looms with improved attachment of the heald-carrying plate
AssigneePromatech S.P.A.
InventorEgidio Tasca
Life of this patent
Estimating the term…
Abstract
Crossbar for heald-carrying frames of weaving looms comprising a main element of the crossbar made, at least in part, of a light metallic material, such as aluminium, magnesium or alloys thereof; and a heald-carrying element made of a high-resistance material, such as steel. The heald-carrying element is steadily fastened to the main element of the crossbar by means of a lock joint, through plastic strain between a longitudinal rib projecting from the main element of the crossbar and a corresponding groove formed in the heald-carrying element.
Claims10
A crossbar for heald-carrying frames of weaving looms, comprising:
- a main element of the crossbar comprising a light metallic material;
- and
- a heald-carrying element comprising a high-resistance material and steadily fastened to said main element of the crossbar, wherein
- the fastening between said elements comprises a lock joint between a longitudinal rib protruding from said main element of the crossbar and a corresponding groove formed in said heald-carrying element of the crossbar,
- said groove comprises at least an undercut portion,
- said longitudinal rib has a height slightly greater than a depth of the corresponding groove, and wherein
- said lock joint implies a permanent plastic strain of said rib.
4 more elements
Dependencies are inferred from the claim text.