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US3735463A
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Method of forming tapered tubular members
Assignee: Amerola Products Corp
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Filing: 1971-11-04
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Granted: 1973-05-29
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Expires: 1991-11-04
Abstract
Abstract A method of forming tapered, generally tubular members having a controlled wall thickness along the length of the tapered member, comprising elongating a portion of a hollow, cylindrical body to decrease the wall thickness of the elongated portion of the body, and thereafter tapering a selected portion of the body to a predetermined shape by reducing the diameter of the selected portion.
Inventors
- 👤 A Merola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:30
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B2102/00; A63B2102/18; Y; Y10; Y10S; Y10S29/00; Y10S29/041; Y10S29/042; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49789; Y10T29/49792; Y10T29/49826; Y10T29/49863; Y10T29/4987
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
80 words
Method of forming a tapered tubular member having a predetermined wall thickness profile along the length thereof, from a hollow cylindrical body having a generally uniform wall thickness comprising: a. elongating a portion of the hollow cylindrical body to decrease the wall thickness of the body along said portion; and b. tapering a portion of said elongated hollow cylindrical body to a predetermined configuration to produce a tapered tubular member having a predetermined wall thickness profile along the length thereof.
Claim 2
Dependent Claim
80 words
Method of forming a tapered tubular member having a predetermined wall thickness profile along the length thereof, from a hollow cylindrical body having a generally uniform wall thickness comprising: a. elongating a portion of the hollow cylindrical body to decrease the wall thickness of the body along said portion; and b. tapering a portion of said elongated hollow cylindrical body to a predetermined configuration to produce a tapered tubular member having a predetermined wall thickness profile along the length thereof.
Claim 3
Dependent Claim
25 words
The method specified in claim 1, wherein the elongated portion of the hollow cylindrical body is tapered by reducing the diameter of the elongated portion.
Claim 4
Dependent Claim
89 words
The method specified in claim 1, wherein the hollow, generally cylindrical body is elongated by; i. engaging the hollow, generally cylindrical body at least at two spaced positions along its length; and ii. applying predetermined force to the hollow, generally cylindrical body at least at one engagement position wherein a substantial component of the force applied is directed parallel to the longitudinal axis of the tubular member whereby the tubular member elongates between the engaged positions with the wall thickness of the elongated portion being reduced a predetermined amount.
Claim 5
Dependent Claim
19 words
The method specified in claim 3, wherein the tapering is effected by swaging a portion of the tubular member.
Claim 6
Dependent Claim
20 words
The method specified in claim 3, wherein the engagement of the tubular member is effected by a circumferential frictional engagement.
Claim 7
Dependent Claim
31 words
The method specified in claim 3, wherein the elongating force is applied at one engagement position with the other engagement position being fixed whereby the elongation takes place in one direction.
Claim 8
Dependent Claim
28 words
The method specified in claim 3, wherein the elongating force is applied in opposite directions at both engagement positions whereby the elongation takes place in two oppOsite directions.
Claim 9
Dependent Claim
31 words
The method specified in claim 3, wherein the elongation is carried out with a mandrel disposed within the tubular member to insure maintenance of the internal diameter of the tubular member.
Claim 10
Dependent Claim
35 words
The method specified in claim 3, wherein the tubular member is tapered into a ball bat shape and end closure means are inserted in the ends of the tubular member to complete the ball bat.
Claim 11
Dependent Claim
84 words
Method of forming a tapered, generally tubular ball bat having a controlled predetermined wall thickness along the length thereof from a hollow, generally cylindrical body having a generally uniform wall thickness, which method comprises: a. elongating a portion of the hollow, generally cylindrical body to decrease the wall thickness of the said body along said elongated portion ; and b. tapering said elongated, hollow cylindrical body to the desired ball bat shape by reducing the diameter of a selected portion of the said body.
Claim 12
Dependent Claim
84 words
Method of forming a tapered, generally tubular ball bat having a controlled predetermined wall thickness along the length thereof from a hollow, generally cylindrical body having a generally uniform wall thickness, which method comprises: a. elongating a portion of the hollow, generally cylindrical body to decrease the wall thickness of the said body along said elongated portion ; and b. tapering said elongated, hollow cylindrical body to the desired ball bat shape by reducing the diameter of a selected portion of the said body.
Claim 13
Dependent Claim
89 words
The method specified in claim 10, wherein the hollow, generally cylindrical body is elongated by; i. engaging the hollow, generally cylindrical body at least at two spaced positions along its length; and ii. applying predetermined force to the hollow, generally cylindrical body at least at one engagement position wherein a substantial component of the force applied is directed parallel to the longitudinal axis of the tubular member whereby the tubular member elongates between the engaged positions with the wall thickness of the elongated portion being reduced a predetermined amount.
Claim 14
Dependent Claim
31 words
The method specified in claim 11, wherein the elongated body is cut at its midpoint and the resultant two partially elongated pieces tapered by swaging to the desired ball bat shape.
References Cited (Backward Citations)
US2181927A
Cited
US3540112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |