US3703263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cord tensioning device
Assignee: Goodyear Tire and Rubber Co
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Filing: 1971-04-26
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Granted: 1972-11-21
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Expires: 1991-04-26
Abstract
Abstract A cord tensioning let-off device having a spindle inclined to the horizontal, a brake member fixed at the lower end of the spindle and a floating armature disposed about the spindle adjacent the brake member and keyed to a spool of cord. Gravity draws the armature into frictional engagement with the brake member and is assisted by an electro-magnet associated with the device.
Inventors
- 👤 Edward E Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:38
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/0007; B65; B65H; B65H59/00; B65H59/02; B65H59/04; B65H2555/00; B65H2555/10; B65H2555/13
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
119 words
An apparatus for holding a spool of cord and tensioning the cord as it is let off the spool comprising: a base, a spindle extending from the base for carrying said spool for rotation about the longitudinal axis of the spindle, an armature movable axially on said spindle, a brake member in fixed position relative to rotation about the longitudinal axis of said spindle for frictionally engaging said armature, means connecting the armature to the spool for rotation in unison about the longitudinal axis of the spindle, mechanical means for urging said armature along said spindle toward said brake member, and an electro-magnet associated with the apparatus for attracting the armature into tighter frictional engagement with the brake member.
Claim 2
Independent Claim
119 words
An apparatus for holding a spool of cord and tensioning the cord as it is let off the spool comprising: a base, a spindle extending from the base for carrying said spool for rotation about the longitudinal axis of the spindle, an armature movable axially on said spindle, a brake member in fixed position relative to rotation about the longitudinal axis of said spindle for frictionally engaging said armature, means connecting the armature to the spool for rotation in unison about the longitudinal axis of the spindle, mechanical means for urging said armature along said spindle toward said brake member, and an electro-magnet associated with the apparatus for attracting the armature into tighter frictional engagement with the brake member.
Claim 3
Independent Claim
119 words
An apparatus for holding a spool of cord and tensioning the cord as it is let off the spool comprising: a base, a spindle extending from the base for carrying said spool for rotation about the longitudinal axis of the spindle, an armature movable axially on said spindle, a brake member in fixed position relative to rotation about the longitudinal axis of said spindle for frictionally engaging said armature, means connecting the armature to the spool for rotation in unison about the longitudinal axis of the spindle, mechanical means for urging said armature along said spindle toward said brake member, and an electro-magnet associated with the apparatus for attracting the armature into tighter frictional engagement with the brake member.
Claim 4
Independent Claim
119 words
An apparatus for holding a spool of cord and tensioning the cord as it is let off the spool comprising: a base, a spindle extending from the base for carrying said spool for rotation about the longitudinal axis of the spindle, an armature movable axially on said spindle, a brake member in fixed position relative to rotation about the longitudinal axis of said spindle for frictionally engaging said armature, means connecting the armature to the spool for rotation in unison about the longitudinal axis of the spindle, mechanical means for urging said armature along said spindle toward said brake member, and an electro-magnet associated with the apparatus for attracting the armature into tighter frictional engagement with the brake member.
Claim 5
Dependent Claim
40 words
An apparatus as claimed in claim 1, wherein the armature and brake member have mating planar surfaces for contacting relationship and the mating planar surface of the brake member lies in a plane normal to the axis of the spindle.
Claim 6
Dependent Claim
42 words
An apparatus as claimed in claim 2, which includes means for allowing slight angular movement of the surface of the armature relative to the longitudinal axis of the spindle such that said mating planar surfaces will be parallel for complete contacting relationship.
Claim 7
Dependent Claim
30 words
An apparatus as claimed in claim 1, further including means for permitting slight relative movement between said armature and said spool in general radial directions with respect to said spindle.
Claim 8
Dependent Claim
21 words
An apparatus as claimed in claim 1, wherein said brake member is fixed in axial directions with respect to said spindle.
Claim 9
Dependent Claim
30 words
An apparatus as claimed in claim 1, wherein said mechanical means comprises means for mounting said spindle such that the force of gravity draws said armature toward said brake member.
Claim 10
Dependent Claim
23 words
An apparatus as claimed in claim 1, further including means for reducing vibrations and shock loads transmitted between said armature and said spool.
Claim 11
Dependent Claim
41 words
An apparatus as claimed in claim 4, wherein said means for fixing the angular position about said spindle of said armature relative to said spool comprises a pin extending parallel to said spindle and engaging both said armature and said spindle.
Claim 12
Dependent Claim
39 words
An apparatus as claimed in claim 8, wherein said means for providing relative movement between said armature and said spool comprises a radially extending slot in either said armature or said spool for receiving one end of said pin.
Claim 13
Dependent Claim
23 words
An apparatus as claimed in claim 9, further including means for reducing vibrations and shock loads transmitted between said armature and said spool.
Claim 14
Dependent Claim
24 words
An apparatus as claimed in claim 10, wherein said spindle is fixed relative to said base and said spool is rotatable about said spindle.
Claim 15
Dependent Claim
41 words
An apparatus as claimed in claim 11, which includes a rheostat disposed in electrical circuitry with the electromagnet for varying the current received by the electromagnet to maintain a predetermined uniform tension on the tire cord as it leaves the spool.
Claim 16
Dependent Claim
16 words
An apparatus as claimed in claim 12, wherein said electro-magnet is fixed relative to said base.
Claim 17
Dependent Claim
27 words
An apparatus as claimed in claim 13, further including means for fixing said brake member in a plurality of positions along the longitudinal axis of said spindle.
Claim 18
Dependent Claim
24 words
An apparatus as claimed in claim 14, wherein said means for reducing vibrations and shock loads comprises a resilient sleeve disposed about said pin.
Claim 19
Dependent Claim
77 words
An apparatus as claimed in claim 15, wherein said armature and said brake member have mating planar surfaces for frictional contacting relationship, the mating planar surface of the brake shoe lies in a plane normal to the axis of the spindle, and further including means for allowing slight angular movement of the surface of the armature relative to the longitudInal axis of the spindle such that the mating planar surfaces will be parallel for complete contacting relationship.
Claim 20
Dependent Claim
46 words
An apparatus as claimed in claim 1, wherein said brake is fixed in axial directions with respect to said spindle and said mechanical means comprises means for mounting said spindle such that the force of gravity draws said armature and said spool toward said brake member.
Claim 21
Independent Claim
168 words
An apparatus for holding a spool of cord and tensioning the cord as it is let off the spool comprising; a base, a spindle extending from the base for carrying said spool for rotation about the longitudinal axis of the spindle, an armature movable axially on said spindle, a brake member in fixed position relative to rotation about the longitudinal axis of said spindle, said armature and brake member having mating planar surfaces for contacting relationship with the mating planar surfaces lying in a plane normal to the axis of the spindle, means connecting the armature to the spool for rotation in unison about the longitudinal axis of the spindle, means for allowing slight angular movement of the surface of the armature relative to the longitudinal axis of the spindle such that said mating planar surfaces will be parallel for complete contacting relationship, and an electro-magnet associated with the apparatus for attracting the armature in an axial direction with respect to said spindle and toward said brake member.
Claim 22
Independent Claim
168 words
An apparatus for holding a spool of cord and tensioning the cord as it is let off the spool comprising; a base, a spindle extending from the base for carrying said spool for rotation about the longitudinal axis of the spindle, an armature movable axially on said spindle, a brake member in fixed position relative to rotation about the longitudinal axis of said spindle, said armature and brake member having mating planar surfaces for contacting relationship with the mating planar surfaces lying in a plane normal to the axis of the spindle, means connecting the armature to the spool for rotation in unison about the longitudinal axis of the spindle, means for allowing slight angular movement of the surface of the armature relative to the longitudinal axis of the spindle such that said mating planar surfaces will be parallel for complete contacting relationship, and an electro-magnet associated with the apparatus for attracting the armature in an axial direction with respect to said spindle and toward said brake member.
Claim 23
Dependent Claim
30 words
An apparatus as claimed in claim 18, further including means for permitting slight relative movement between said armature and said spool in general radial directions with respect to said spindle.
Claim 24
Dependent Claim
23 words
An apparatus as claimed in claim 19, further including means for reducing vibrations and shock loads transmitted between said armature and said spool.
References Cited (Backward Citations)
FR364717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |