Patents by Inventor Rolf Willmer

Rolf Willmer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7043941
    Abstract: A circular knitting machine with a carrier (1) for knitting tools (2) and a cam housing (8) is described, the cam housing (8) being sub-divided into a plurality of segments (8a, 8b, 8c) which are adjacent in the circumferential direction and bear needle cams (9). According to the invention, the circular knitting machine has a dust removal device which contains air distribution channels (23) which are configured in the segments and are connected to a compressed air source via radial air supply channels (24). The air distribution channels (23) discharge into radial gaps (22) which are present between the segments and are sealed outwardly with sealing means (30) (FIG. 5).
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: May 16, 2006
    Assignee: Sipra Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventors: Rolf Willmer, Roland Sickinger, Klaus Berwald
  • Publication number: 20060070408
    Abstract: A circular knitting machine with a carrier (1) for knitting tools (2) and a cam housing (8) is described, the cam housing (8) being sub-divided into a plurality of segments (8a, 8b, 8c) which are adjacent in the circumferential direction and bear needle cams (9). According to the invention, the circular knitting machine has a dust removal device which contains air distribution channels (23) which are configured in the segments and are connected to a compressed air source via radial air supply channels (24). The air distribution channels (23) discharge into radial gaps (22) which are present between the segments and are sealed outwardly with sealing means (30) (FIG. 5).
    Type: Application
    Filed: October 4, 2005
    Publication date: April 6, 2006
    Inventors: Rolf Willmer, Roland Sickinger, Klaus Berwald
  • Patent number: 6962065
    Abstract: What is described is a knitting machine with an electromagnetic selecting device for the three-way technique. In order to reduce the space requirement for the selecting device in height and width, assigned to each of the knitting tools (7) is a pivotable control jack (8) having two raising butts (17, 18) and to which, per selecting device, two control magnets (31, 32) arranged one after the other in the running direction of the knitting tools (7) are assigned. Depending upon which of the two control magnets (31, 32) is selected for a selecting procedure, the control jacks (8) find their way with one raising butt (17) onto a knitting cam (28) or with the other raising butt (18) onto a tuck cam (29).
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: November 8, 2005
    Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventor: Rolf Willmer
  • Patent number: 6915666
    Abstract: A circular knitting machine is described which is intended to serve in particular the production of spacer fabrics. The circular knitting machine contains a needle cylinder (1) having cylinder needles (2), a cylinder cam (3), a dial (4) with needles (5) and a dial cam (6). The needle cylinder (1) and the dial (4) fix a vertical and a horizontal comb spacing (x, y) and a stitch spacing (z). According to the invention, the needle cylinder (1) and the dial (4) are set up to form a stitch spacing (z) of at least 6 mm, and the knitting needles (2, 5) of the needle cylinder (1) and/or the dial (4) are in the form of compound needles (FIG. 1).
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: July 12, 2005
    Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventor: Rolf Willmer
  • Patent number: 6854294
    Abstract: A knitting machine and a method to be accomplished on said machine are described, which are suitable for the production of knitwear from hard, inelastic thread material, e.g. from metal threads. According to the invention, at knitting systems (8a, 8b) provided for this purpose, knitting needles (2) are raised to pick up threads, which are then preformed over the upper edges of knocking-over/holding-down sinkers (3) to form loops. Thereafter the stitch formation takes place by needle and sinker movements directed in opposite directions in the manner of the relative technique.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: February 15, 2005
    Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventors: Rolf Willmer, Hermann Stauss
  • Publication number: 20040221620
    Abstract: What is described is a knitting machine with an electromagnetic selecting device for the three-way technique. In order to reduce the space requirement for the selecting device in height and width, assigned to each of the knitting tools (7) is a pivotable control jack (8) having two raising butts (17, 18) and to which, per selecting device, two control magnets (31, 32) arranged one after the other in the running direction of the knitting tools (7) are assigned. Depending upon which of the two control magnets (31, 32) is selected for a selecting procedure, the control jacks (8) find their way with one raising butt (17) onto a knitting cam (28) or with the other raising butt (18) onto a tuck cam (29) (FIG. 2).
    Type: Application
    Filed: May 3, 2004
    Publication date: November 11, 2004
    Inventor: Rolf Willmer
  • Publication number: 20040216496
    Abstract: A circular knitting machine is described which is intended to serve in particular the production of spacer fabrics. The circular knitting machine contains a needle cylinder (1) having cylinder needles (2), a cylinder cam (3), a dial (4) with needles (5) and a dial cam (6). The needle cylinder (1) and the dial (4) fix a vertical and a horizontal comb spacing (x, y) and a stitch spacing (z).
    Type: Application
    Filed: April 30, 2004
    Publication date: November 4, 2004
    Inventor: Rolf Willmer
  • Publication number: 20040200242
    Abstract: A knitting machine and a method to be accomplished on said machine are described, which are suitable for the production of knitwear from hard, inelastic thread material, e.g. from metal threads. According to the invention, at knitting systems (8a, 8b) provided for this purpose, knitting needles (2) are raised to pick up threads, which are then preformed over the upper edges of knocking-over/holding-down sinkers (3) to form loops. Thereafter the stitch formation takes place by needle and sinker movements directed in opposite directions in the manner of the relative technique.
    Type: Application
    Filed: April 5, 2004
    Publication date: October 14, 2004
    Inventors: Rolf Willmer, Hermann Stauss
  • Patent number: 6178786
    Abstract: A knitting machine (1) comprises a shaft (2) with a recess (11) in which a selection element (12) provided with a controllable raising butt (20) is mounted swivellably and can be swivelled to and fro between a position in which the raising butt (20) is retracted into the recess (11) and a position in which the raising butt (20) projects forwards over the front side of the shaft (2). A spring (21), which can be attached to the selection element (12) or the shaft (2), serves to pre-tension the selection element (12) into one of these two positions (FIG. 1).
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: January 30, 2001
    Assignee: SIPRA Patententwicklungs- u. Beteiligungsgesellschaft mbH
    Inventor: Rolf Willmer
  • Patent number: 6167730
    Abstract: A sinker (1) for a circular knitting machine contains a shaft (2) with a recess (11) in which a selection element (12) provided with a controllable raising butt (20) is mounted swivellably and can be swivelled to and fro between a position in which the raising butt (20) is retracted into the recess (11) and a position in which the raising butt (20) projects upwards over the upper side of the shaft (2). A spring (21), which can be attached to the selection element (12) or the shaft (2), serves to pre-tension the selection element (12) into one of these two positions (FIG. 1). In addition, a selection device is provided for selecting the sinker (1) in accordance with a pattern.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: January 2, 2001
    Assignee: SIPRA Patententwicklungs- u. Beteiligungsgesellschaft mbH
    Inventor: Rolf Willmer