- Patent Title: Rotary hook with bobbin case for a lockstitch sewing machine including means to reduce the plays between bobbin case and basket and to reduce the noise thereof
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Application No.: US14196248Application Date: 2014-03-04
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Publication No.: US09850608B2Publication Date: 2017-12-26
- Inventor: Daniele Cerliani
- Applicant: CM CERLIANI S.R.L.
- Applicant Address: IT Pavia
- Assignee: CM CERLIANI S.R.L.
- Current Assignee: CM CERLIANI S.R.L.
- Current Assignee Address: IT Pavia
- Agency: Young & Thompson
- Priority: ITMI2013A0324 20130304
- Main IPC: D05B57/14
- IPC: D05B57/14 ; D05B57/16 ; D05B69/32
Abstract:
A rotary hook (1) of a lockstitch sewing machine composed of at least one hook body (2) includes a cylindrical cavity (11) and a basket (6, 6b) free to rotate in the cylindrical cavity (11), a bobbin case (8, 8b) housed in the basket (6, 6b) and a bobbin (4, 4b) housed in the bobbin case (8, 8b), elements (30, 40, 50, 60, 61, 70,) suited to create a friction between the bobbin case (8, 8b) and the basket (6, 6b), so as to prevent the bobbin case (8, 8b) to move freely and to vibrate within the plays present between the bobbin case (8, 8b) and the basket (6, 6b) and to consequently reduce the noisiness created during the sewing operation.
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