Patent US3374521A successfully refreshed from Google Patents.
US3374521A
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Tapping apparatus and method
Assignee: Tenneco Inc
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Filing: 1964-01-20
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Granted: 1968-03-26
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Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Clarke Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:17
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/04; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/612; Y10T137/6123; Y10T29/00; Y10T29/49; Y10T29/49403
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
THE METHOD OF PERFORMING A HOT TAPPING OPERATION ON A CONTAINER HAVING A FIRST FLUID UNDER PRESSURE CONTAINED THEREIN, COMPRISING THE STEPS OF: FORMING AN ENCLOSED CHAMBER ADJACENT TO AND IN COMMUNICATION WITH A PORTION OF THE EXTERNAL WALL OF SAID CONTAINER, POSITIONING A FLUID PRESSURE ACTUATED DRILLING MEANS WITH A DRILL BIT WITHIN SAID CHAMBER AND HOLDING SAID BIT IN DRILLING ENGAGEMENT WITH SAID WALL, APPLYING A SECOND FLUID UNDER PRESSURE TO SAID CHAMBER TO THEREBY OPERATE SAID DRILLING MEANS, ADVANCING SAID BIT INTO SAID WALL DURING OPERATION OF SAID DRILLING MEANS, CONTINUING THE APPLICATION OF SAID SECOND FLUID UNTIL SAID BIT INITIALLY PENETRATES SAID WALL, TO THEREBY PERMIT THE ESCAPE OF SAID FIRST FLUID FROM SAID CONTAINER INTO SAID CHAMBER, APPLYING SAID FIRST FLUID TO OPERATE SAID DRILLING MEANS TO COMPLETE THE CUTTING OF AN OPENING INTO SAID CONTAINER.
Claim 2
Independent Claim
141 words
THE METHOD OF PERFORMING A HOT TAPPING OPERATION ON A CONTAINER HAVING A FIRST FLUID UNDER PRESSURE CONTAINED THEREIN, COMPRISING THE STEPS OF: FORMING AN ENCLOSED CHAMBER ADJACENT TO AND IN COMMUNICATION WITH A PORTION OF THE EXTERNAL WALL OF SAID CONTAINER, POSITIONING A FLUID PRESSURE ACTUATED DRILLING MEANS WITH A DRILL BIT WITHIN SAID CHAMBER AND HOLDING SAID BIT IN DRILLING ENGAGEMENT WITH SAID WALL, APPLYING A SECOND FLUID UNDER PRESSURE TO SAID CHAMBER TO THEREBY OPERATE SAID DRILLING MEANS, ADVANCING SAID BIT INTO SAID WALL DURING OPERATION OF SAID DRILLING MEANS, CONTINUING THE APPLICATION OF SAID SECOND FLUID UNTIL SAID BIT INITIALLY PENETRATES SAID WALL, TO THEREBY PERMIT THE ESCAPE OF SAID FIRST FLUID FROM SAID CONTAINER INTO SAID CHAMBER, APPLYING SAID FIRST FLUID TO OPERATE SAID DRILLING MEANS TO COMPLETE THE CUTTING OF AN OPENING INTO SAID CONTAINER.
Claim 3
Independent Claim
19 words
AN APPARATUS FOR PERFORMING A HOT TAP OPERATION ON A CONTAINER HAVING A FLUID UNDER PRESSURE CONTAINED THEREIN, COMPRISING:
Claim 4
Independent Claim
19 words
AN APPARATUS FOR PERFORMING A HOT TAP OPERATION ON A CONTAINER HAVING A FLUID UNDER PRESSURE CONTAINED THEREIN, COMPRISING:
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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |