Patent US3766754A successfully refreshed from Google Patents.
US3766754A
Expired / Lapsed
US
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Switchable lock for knitting machines
Assignee: Henkel Dorus GmbH and Co KG
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Filing: 1971-10-22
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Granted: 1973-10-23
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Expires: 1991-10-22
Abstract
Abstract Cams in knitting machines are movable between operative and inoperative positions and are biased as by springs toward one position and are held in the other position against the spring bias by a detent engaging latching bolt controlled by an electromagnet and movable along a path perpendicular to the direction of cam movement.
Inventors
- 👤 H Schieber
- 👤 E Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:40
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/32; D04B15/327
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
Switchable cam lock arrangements for knitting machines in which the selection and establishing of the positions of cam parts takes place by mechanical displacement of individual cam parts and wherein the cam parts are held in these positions by electromagnets, said arrangements comprising means for moving said cam parts against a bias force to given positions, and locking devices for holding said cam parts in said given positions, said locking devices being actuated by separate electromagnets said locking devices including a detent bolt movable along a path in a direction perpendicular to the direction of movement of the cam parts into and out from a detent groove on said cam parts.
Claim 2
Dependent Claim
111 words
Switchable cam lock arrangements for knitting machines in which the selection and establishing of the positions of cam parts takes place by mechanical displacement of individual cam parts and wherein the cam parts are held in these positions by electromagnets, said arrangements comprising means for moving said cam parts against a bias force to given positions, and locking devices for holding said cam parts in said given positions, said locking devices being actuated by separate electromagnets said locking devices including a detent bolt movable along a path in a direction perpendicular to the direction of movement of the cam parts into and out from a detent groove on said cam parts.
Claim 3
Dependent Claim
32 words
Switchable cam lock arrangements according to claim 1, wherein the means for moving said cam parts comprises a lever arranged to engage a fixed cam on the edges of the knitting machine.
Claim 4
Dependent Claim
33 words
Switchable cam lock arrangements according to claim 1, wherein the means for moving the cam parts comprises further cam means fixed on the knitting machine to be engaged directly by the cam parts.
Claim 5
Dependent Claim
23 words
Switchable cam lock arrangements according to claim 1, wherein said cam parts are spring biased in a vertical direction to the needle butts.
Claim 6
Dependent Claim
24 words
Switchable cam lock arrangements according to claim 1, wherein the cam parts are switchable into their rest position by means of a fixed cam.
Claim 7
Dependent Claim
24 words
Switchable cam lock arrangements according to claim 1, wherein the cam parts are switchable into their operating position by means of a fixed cam.
Claim 8
Dependent Claim
18 words
Switchable cam lock arrangements according to claim 1, wherein each electromagnet is provided with a spring-actuated detent bolt.
Claim 9
Dependent Claim
18 words
Switchable cam lock arrangements according to claim 1, wherein the cam parts comprise plates mounted on guide bolts.
Claim 10
Dependent Claim
20 words
Switchable cam lock arrangements according to claim 8, wherein the detent bolts engage in detent grooves in the guide bolts.
References Cited (Backward Citations)
US1571765A
Cited
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Cited
US3232079A
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Cited
US3229482A
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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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |