US3722053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making well pressure sealing cup reinforcing structure
Assignee: Dresser Industries Inc
•
Filing: 1971-07-26
•
Granted: 1973-03-27
•
Expires: 1991-07-26
Abstract
Abstract An improved reinforcing structure and method of making said structure are disclosed. The improved reinforcing structure is a polyfurcated cylinder having an integral base portion and a tines portion. The method of manufacture includes the steps of rolling a polyfurcated plate with an integral base and tines portion, rolling the base portion into a cylindrical shape and securing the abutting ends of the base.
Inventors
- 👤 R Berry
- 👤 H Blackwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/10; E21B37/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49609
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A method of making an improved reinforcing structure for a well swab body comprising: rolling a polyfurcated plate having integral base and tines portions whereby said base portion is rolled into a cylindrical shape; and securing the ends of said base portion in abutting relation whereby said rolled base portion remains in a cylindrical shape.
Claim 2
Independent Claim
55 words
A method of making an improved reinforcing structure for a well swab body comprising: rolling a polyfurcated plate having integral base and tines portions whereby said base portion is rolled into a cylindrical shape; and securing the ends of said base portion in abutting relation whereby said rolled base portion remains in a cylindrical shape.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein said securing step includes welding said ends of said base portion in abutting relation.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein said securing step comprises placing an annular ring around said rolled base portion.
Claim 5
Dependent Claim
26 words
The method of claim 1 wherein said securing step comprises welding a portion of an annular ring across the abutting ends of said rolled base portion.
Claim 6
Independent Claim
94 words
A method of making a reinforcing structure for a well swab body comprising: slitting a metallic plate whereby a plUrality of substantially uniformly shaped tines are formed in said plate wherein said tines extend over a major portion of the full width of said plate and are integral with an unslit base portion of said plate; rolling said slit plate whereby said unslit base portion of said plate is rolled into a cylindrical shape; and securing the ends of the unslit base portion of said plate after rolling whereby the cylindrical shape is retained.
Claim 7
Independent Claim
94 words
A method of making a reinforcing structure for a well swab body comprising: slitting a metallic plate whereby a plUrality of substantially uniformly shaped tines are formed in said plate wherein said tines extend over a major portion of the full width of said plate and are integral with an unslit base portion of said plate; rolling said slit plate whereby said unslit base portion of said plate is rolled into a cylindrical shape; and securing the ends of the unslit base portion of said plate after rolling whereby the cylindrical shape is retained.
Claim 8
Dependent Claim
23 words
The method of claim 5 further comprising the step of forming said slit plate into a predetermined shape prior to said rolling step.
Claim 9
Dependent Claim
28 words
The method of claim 5 comprising the further step of forming said rolled plate whereby said tines portion is formed into a predetermined shape before said securing step.
Claim 10
Dependent Claim
25 words
The method of claim 5 comprising the further step of forming the tines portion of said plate into a predetermined shape after said securing step.
Claim 11
Dependent Claim
18 words
The method of claim 5 wherein said securing step includes welding the ends of said unslit base portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |