Patent US3784121A successfully refreshed from Google Patents.
US3784121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traversing mechanism
Assignee: Johns Manville Corp
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Filing: 1971-03-02
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Granted: 1974-01-08
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Expires: 1991-03-02
Abstract
Abstract A traversing mechanism for strands comprising a series of cams mounted for rotation about an axis. Inclined working faces of the cams cooperate with faces parallel to the axis of rotation to traverse the strand over a path which maintains an essentially constant spacing from the axis of rotation during all traversing positions.
Inventors
- 👤 D Arno
- 👤 J Mohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:03
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/28; B65H54/2836; B65H54/2845; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10S; Y10S242/00; Y10S242/92
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
361 words
A traversing mechanism having an axis of rotation and arranged for displacing a strand which approaches said mechanism along a first line generally normal to a first plane containing said axis and departs from said mechanism along a second line generally normal to a second plane containing said axis, said second plane intersecting said first plane at the axis of rotation to form an acute angle subtended by the strand, said strand displacement being in a cyclically repetitive pattern on both sides of a neutral position which the strand would tend to assume between its first line of approach and its second line of departure from said mechanism if unconstrained, including a pair of opposed cam arrays arranged to engage and laterally displace the strand, means mounting said cam arrays for rotation about said axis of rotation, and means for rotating said mounting means and said cam arrays around said axis, the improvement which comprises: each cam array generally defining, in a plurality of planes extending radially from and angularly spaced about said axis, a first effective surface region parallel to said axis and a second generally helical effective surface region inclined with respect to said axis, said second surface region being inclined with respect to said axis at an acute angle in each of said planes with the acute angle of said second surface region in any one of said planes differing from the acute angle of said second surface region in any other of said planes for the cam array and with said acute angle of said second effective surface region having a magnitude which is greatest for portions of said second surface region adapted to contact said strand closest to said neutral position to urge said strand away from said neutral position and the least for portions of said second surface region adapted to contact said strand farthest from said neutral position to urge said strand toward said neutral position whereby a lateral force is imposed on said strand by said second surface region to displace said strand laterally to said first surface region so that said strand departs from said first surface region at said second plane.
Claim 2
Dependent Claim
361 words
A traversing mechanism having an axis of rotation and arranged for displacing a strand which approaches said mechanism along a first line generally normal to a first plane containing said axis and departs from said mechanism along a second line generally normal to a second plane containing said axis, said second plane intersecting said first plane at the axis of rotation to form an acute angle subtended by the strand, said strand displacement being in a cyclically repetitive pattern on both sides of a neutral position which the strand would tend to assume between its first line of approach and its second line of departure from said mechanism if unconstrained, including a pair of opposed cam arrays arranged to engage and laterally displace the strand, means mounting said cam arrays for rotation about said axis of rotation, and means for rotating said mounting means and said cam arrays around said axis, the improvement which comprises: each cam array generally defining, in a plurality of planes extending radially from and angularly spaced about said axis, a first effective surface region parallel to said axis and a second generally helical effective surface region inclined with respect to said axis, said second surface region being inclined with respect to said axis at an acute angle in each of said planes with the acute angle of said second surface region in any one of said planes differing from the acute angle of said second surface region in any other of said planes for the cam array and with said acute angle of said second effective surface region having a magnitude which is greatest for portions of said second surface region adapted to contact said strand closest to said neutral position to urge said strand away from said neutral position and the least for portions of said second surface region adapted to contact said strand farthest from said neutral position to urge said strand toward said neutral position whereby a lateral force is imposed on said strand by said second surface region to displace said strand laterally to said first surface region so that said strand departs from said first surface region at said second plane.
Claim 3
Dependent Claim
53 words
A traversing mechanism according to claim 1 wherein at least one plane extending radially from said axis of rotation and containing effective cam surfaces has a third effective surface region intermediate and contiguous with said first and second regions, and said third effective surface region is essentially perpendicular to said axis of rotation.
Claim 4
Dependent Claim
43 words
A traversing mechanism according to claim 1 wherein said first surface region for each of said radially extenDing planes has a termination at its end proximate said second surface region at a different position along the axis of rotation of said traversing mechanism.
Claim 5
Dependent Claim
28 words
A traversing mechanism according to claim 3 wherein said terminations define locations on a generally sinusoidal pattern of lateral positions of the strand centered around said neutral position.
Claim 6
Dependent Claim
19 words
A traversing mechanism according to Claim 1 wherein said cam arrays are defined by a plurality of discrete elements.
Claim 7
Dependent Claim
19 words
A traversing mechanism according to claim 5 wherein said elements are disposed with equal angular spacing between successive elements.
Claim 8
Dependent Claim
20 words
A traversing mechanism according to claim 6 wherein said cam arrays each comprise at least three of said discrete elements.
Claim 9
Dependent Claim
14 words
A traversing mechanism according to claim 7 wherein said discrete elements are of wire.
Claim 10
Dependent Claim
50 words
A traversing mechanism according to claim 7 wherein at least two of said discrete elements of each cam array have a third effective surface region intermediate and contiguous with said first and second effective surface regions, and said third effective surface region is essentially perpendicular to said axis of rotation.
Claim 11
Dependent Claim
67 words
A traversing mechanism according to claim 9 wherein said discrete elements of each cam array include at least one element wherein said first and second effective surfaces have an intersection and wherein said intersection defines an obtuse angle toward said neutral position whereby said inclined surface portion imparts a lateral force to the strand augmenting the inherent force tending to displace the strand toward its neutral position.
Claim 12
Dependent Claim
41 words
A traversing mechanism according to claim 9 wherein said discrete elements having said third effective surface, have said third surface at positions in the lateral traverse cycle of the strand at which larger lateral displacing forces are imposed on said strand.
Claim 13
Dependent Claim
51 words
A traverse mechanism according to claim 1 wherein said first effective region of successive planes rotated through said first and second planes have terminations progressively displaced along the axis of rotation whereby the strand is moved laterally along the axis without substantial displacement normal to said axis as cam arrays rotated.
Claim 14
Dependent Claim
46 words
A traverse mechanism according to claim 1 wherein the strand is a plurality of glass fiber filaments and said cam arrays are each at least three phosphor-bronze wires each formed to define said first and second effective surfaces in said planes extending radially from said axis.
Claim 15
Dependent Claim
76 words
A traverse mechanism according to claim 13 wherein the plane of each wire is angularly displaced an equal amount from the planes of its adjacent wires and those wires imparting the greater lateral force on said glass fiber strand have sections extending at right angles to said axis intermediate said first and second effective surfaces whereby said strand is supported normal and parallel to the axis of rotation to minimize the tendency to flatten the strand.
References Cited (Backward Citations)
US3040999A
Cited
US3292872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |