US3890189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for welding synthetic yarns
Assignee: Heberlein and Co AG
•
Filing: 1973-09-14
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Granted: 1975-06-17
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Expires: 1993-09-14
Abstract
Abstract Apparatus for welding synthetic yarns include yarn gripping means mounted on levers which are pivotable towards yarn welding means, the levers being biased so as to be separated from each other when in inactive position to allow for yarn insertion, and actuating means operable first to press the levers together and then to move both towards the welding means.
Inventors
- 👤 Erich Tessmann
- 👤 Hans-Erich Tessman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:02
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/84; B29C66/861; B29C66/8618; B29C65/00; B29C65/02; B29C65/18; B29C66/69; B29C66/82; B29C66/822; B29C66/8221; B29C66/8227; B29C66/83; B29C66/832; B29C66/8324; B65; B65H; B65H69/00; B65H69/08; B65H2402/00; B65H2402/40; B65H2402/41; B65H2402/414; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10T; Y10T156/00; Y10T156/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
Apparatus for welding synthetic yarns comprising a gripper element (2a) including means (2b) forming a yarn receiving recess, a counter-holder element (1a) for securing parallel yarn ends in said recess, and heating means for melting off the yarn ends while simultaneously welding the faces produced thereby, said counter-holder and gripper elements each being arranged on respective levers (1, 2), means mounting one of said levers for pivotal movement, means mounting the other of said levers for pivotal movement relative to said one of said levers, said elements each having a flat section for pinching the yarn ends therebetween, actuating means including an arm operable first to press one of said levers towards the other to bring said yarn receiving recess and said counter-holder element together and then to pivot both elements towards said heating means, and means biasing said elements away from said heating means and from each other.
Claim 2
Dependent Claim
149 words
Apparatus for welding synthetic yarns comprising a gripper element (2a) including means (2b) forming a yarn receiving recess, a counter-holder element (1a) for securing parallel yarn ends in said recess, and heating means for melting off the yarn ends while simultaneously welding the faces produced thereby, said counter-holder and gripper elements each being arranged on respective levers (1, 2), means mounting one of said levers for pivotal movement, means mounting the other of said levers for pivotal movement relative to said one of said levers, said elements each having a flat section for pinching the yarn ends therebetween, actuating means including an arm operable first to press one of said levers towards the other to bring said yarn receiving recess and said counter-holder element together and then to pivot both elements towards said heating means, and means biasing said elements away from said heating means and from each other.
Claim 3
Dependent Claim
21 words
Apparatus according to claim 1, characterized in that both levers are provided in the form of a blade spring (1, 2).
Claim 4
Dependent Claim
25 words
Apparatus according to claim 2, characterized in that both blade springs (1, 2) are arranged with a common tightening location (10) serving as a pivot.
Claim 5
Dependent Claim
63 words
Apparatus according to claim 3, characterized in that the blade spring (1) including the counterholder element (1a) is longer than the blade spring (2) carrying the gripping element (2a) and in that the said gripping element is fixed on said gripping element blade spring at the same distance from said tightening location (10) as the blade spring (1) of the counter-holder element (1a).
Claim 6
Dependent Claim
54 words
Apparatus according to claim 1 in which a stop element is provided for limiting the pivoting movement of said one of said elements towards welding position said stop element being a roller, means eccentrically mounting said roller to provide an axis about which said roller may be rotatably adjusted relative to said heating element.
Claim 7
Dependent Claim
99 words
Apparatus according to claim 1, characterized by a power source and switch means which are closed upon movement of said actuating means towards the yarn welding position to connect said power source to said heating means to bring same to yarn welding condition, whereby on reduction of pivot angle of the arm of said actuating means said switch means are opened thereby disconnecting said power source from said heating means while the lever of the gripper element and the lever of the counter-holder element are still pressed together thereby fixing the yarn ends in welding position during following cooling.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |