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:
Dec. 22, 1992
Filed:
Mar. 28, 1991
Franco Gariboldi, Condove (Torino), IT;
Other;
Abstract
A needle selection device for circular knitting machines for women's stockings, including a pusher jacks associated with each of a plurality of needles of a needle cylinder, each pusher jack having two heels including an upper heel interacting, in a selection position, with a lower cam and a lower heel interacting, in a selection position, with a pressure cam, acting in a radial direction with respect to the cylinder, and with a raising cam. A horizontal collar is provided formed of non-magnetic material anchored around the needle, the collar defining a plurality of radial grooves. A plurality of horizontal elastic selector jacks are positioned in one of the radial grooves. A permanently magnetized ring is fastened below the collar, facing the selector jacks, spaced a distance from the selector jacks to retain said selector jacks only when said selector jacks are inclined downwardly. A permanent magnet is supported by a fixed structure with respect to the cylinder in a region of each pressure cam for removing the selector jack from the horizontal rest position for urging the selector jack to the permanently magnetized ring, to the position inclined downwardly. A vertical tappet is provided positioned between the permanent magnet and an inclined surface of the raising cam, and positioned under the selector jack for selective detachment of the selector jack from contact with the permanently magnetized ring, whereby the position of the selector jack maintains or modifies a position of the corresponding pusher jack upon passage of the pusher jack over the pressure cam for determining non-operation or operation of a corresponding needle.