US3629029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making sectional rods
Assignee: True Temper Corp
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Filing: 1970-01-23
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Granted: 1971-12-21
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Expires: 1990-01-23
Abstract
Abstract Single piece hollow rod blanks of fiber glass reinforced plastic are formed upon mandrels having stepdown portions intermediate the ends thereof. Mandrels are wrapped in resin impregnated fiber glass cloth having the majority of the fibers disposed parallel with the axes of the mandrels. Upon curing of the plastic, the mandrels are withdrawn and the stepdown portions are cut out of the blanks leaving a plurality of individual sections of hollow sectional rods. The diameters on either side of the stepdown portions of the mandrels are such that a smaller diameter section of each rod is provided with a shank, and a larger diameter section is provided with a socket adapted to receive the shank. Modifications comprise tapering the mandrel on either side of the stepdown portion to provide a tapered shank and socket fit, and providing a reinforcing ply in the area of the shank, socket, and stepdown portions or other area of the rod.
Inventors
- 👤 Joseph M Holahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:26
CPC Classifications
A; A01; A01K; A01K87/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
38 words
The method of claim 1 wherein the shank and socket forming portions of the mandrel are tapered in the axial direction opposite to the general taper of the mandrel whereby the socket and shank have a tapered fit.
Claim 2
Independent Claim
208 words
The method of making a sectional fiber glass rod comprising the step of providing an elongated mandrel which is generally tapered in one axial direction throughout its length and has at least one diametric stepdown portion intermediate the ends thereof, the stepdown being in the same axial direction as the taper, and there being a shank forming portion projecting axially from the smaller end of the stepdown portion and a socket forming portion projecting axially from the larger end of the stepdown portion; the step of encasing the mandrel in fiber glass reinforced plastic and curing the same to form a fiber glass rod blank having at least one stepdown portion with a shank formed adjacent to the smaller end of the stepdown portion and a socket for receiving the shank formed adjacent to the larger end of the stepdown portion; the step of pulling the mandrel out of the fiber glass rod blank; and the step of cutting out and removing the stepdown portion of the blank whereby the blank is severed into a butt section and a tip section having a socket and shank, respectively; the step of encasing the mandrel in fiber glass reinforced plastic comprising wrapping the mandrel in resin impregnated fiber glass cloth.
Claim 3
Dependent Claim
66 words
The method of claim 3 wherein the fiber glass cloth is unidirectional in construction having the majority of the fibers thereof oriented in one direction and is disposed with the majority of its fibers parallel with the axis of the mandrel; and the step of wrapping the shank, stepdown, and socket forming portions of the mandrel with a reinforcing ply made out of fiber glass cloth.
Claim 4
Dependent Claim
15 words
The method of claim 4 wherein the reinforcing ply is disposed adjacent to the mandrel.
Claim 5
Dependent Claim
19 words
The method of claim 4 wherein the reinforcing ply is disposed outside of the first mentioned fiber glass cloth.
Claim 6
Dependent Claim
32 words
The method of claim 4 wherein at least two layers of the first mentioned fiber glass cloth are wrapped upon the mandrel with the reinforcing ply being disposed between said two layers.
Claim 7
Dependent Claim
57 words
The method of claim 3 including the step of wrapping the shank, stepdown, and socket forming portions of the mandrel with a reinforcing ply of fiber glass cloth, a part of the reinforcing ply being disposed adjacent to the mandrel and another part of the reinforcing ply being disposed outside of the first mentioned fiber glass cloth.
Claim 8
Dependent Claim
61 words
The method of claim 4 wherein the reinforcing ply has a substantially equal number of fibers in the warp and woof thereof, the reinforcing ply being so oriented with respect to the axis of the mandrel that one-half of said fibers are parallel with the axis of the mandrel and the other half of the fibers are perpendicular to said axis.
Claim 9
Dependent Claim
36 words
The method of claim 4 wherein the reinforcing ply is a bidirectional fiber glass cloth having the fibers of the warp and woof thereof disposed at an angle with respect to the axis of the mandrel.
Claim 10
Dependent Claim
32 words
The method of claim 10 wherein the fibers of the warp and woof of the reinforcing ply are disposed at substantially a 45* angle with respect to the axis of the mandrel.
Claim 11
Independent Claim
374 words
The method of making a sectional fiber glass rod comprising the step of providing an elongate mandrel which is generally tapered in one axial direction throughout its length and has at least one diametric stepdown portion intermediate the ends thEreof, the stepdown being in the same axial direction as the taper, and there being a shank forming portion projecting axially from the smaller end of the stepdown portion and a socket forming portion projecting axially from the larger end of the stepdown portion; the step of encasing the mandrel in fiber glass reinforced plastic and curing the same to form a fiber glass rod blank having at least one stepdown portion with a shank formed adjacent to the smaller end of the stepdown portion and a socket for receiving the shank formed adjacent to the larger end of the stepdown portion; the step of pulling the mandrel out of the fiber glass rod blank; and the step of cutting out the stepdown portion of the blank thereby providing one section having a socket and another section having a shank adapted to be inserted into the socket, the step of encasing the mandrel in fiber glass reinforced plastic comprising providing an elongated pattern of fiber glass cloth having a first longitudinal edge and an opposite, second longitudinal edge; providing a reinforcing flap superimposed upon the pattern, the flap having a transverse portion extending from the first longitudinal edge to and beyond the second longitudinal edge, the transverse portion having transversely directed ends and substantially right angularly directed projections extending from the ends in opposite directions substantially parallel with the pattern, one of the projections being adjacent to the first longitudinal edge and the other projection being disposed outwardly beyond the second longitudinal edge; disposing the pattern longitudinally parallel with the mandrel with the transverse portion of the flap aligned with the stepdown portion of the mandrel and wrapping the mandrel with the flap disposed inwardly of the wrap whereby the one projection is wrapped around the one forming portion of the mandrel inwardly of the pattern and the other projection is wrapped around the other forming portion of the mandrel outwardly of the pattern; and curing an impregnating plastic in the pattern and reinforcing flap.
Claim 12
Dependent Claim
33 words
The method of claim 12 wherein the one projection is wrapped around the shank forming portion of the mandrel and the other projection is wrapped around the socket forming portion of the mandrel.
References Cited (Backward Citations)
US2571717A
Cited
US3044256A
Cited
US2966101A
Cited
US3191289A
Cited
US3166319A
Cited
US3442738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |