Patent US3133469A successfully refreshed from Google Patents.
US3133469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for axial displacement of a pipe, rod or the like elongated member
Assignee: Nitroglycerin AB
•
Filing: 1961-01-26
•
Granted: 1964-05-19
•
Expires: 1981-01-26
Abstract
No abstract record available.
Inventors
- 👤 Ljungberg Sten Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:33
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/08; F42D1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A DEVICE FOR AXIAL DISPLACEMENT OF AN ELONGATED MEMBER FOR CHARGING BORE-HOLES WITH EXPLOSIVES BY REPETITIOUS MOVEMENT OF RELATIVELY SMALL UNITS OF EXPLOSIVES INTO THE BOREHOLES COMPRISING A CLAMPING MEMBER PROVIDED WITH A CONTAINER HAVING A WALL OF RESILIENT MATERIAL AND FORMED TO SEIZE SAID ELONGATED MEMBER, AN ACTUATOR COMPRISING A HOUSING AND A PISTON DISPOSED WITHIN SAID HOUSING, SAID HOUSING AND SAID PISTON DISPLACEABLE RELATIVE TO ONE ANOTHER BY RECIPROCATIVE MOTION OF ONE OF THEM, MEANS TO CONNECT SAID CLAMPING MEMBER WITH THE MOVABLE PART OF SAID ACTUATOR, A SOURCE OF PRESSURE MEDIUM, AND AUTOMATIC MEANS TO CONNECT SAID CONTAINER AND ALTERNATELY ONE OR THE OTHER SIDE OF THE MOVABLE PART OF SAID ACTUATOR TO SAID SOURCE OF PRESSURE MEDIUM TO PRODUCE THE DISPLACEMENT OF SAID ELONGATED MEMBER.
Claim 2
Independent Claim
129 words
A DEVICE FOR AXIAL DISPLACEMENT OF AN ELONGATED MEMBER FOR CHARGING BORE-HOLES WITH EXPLOSIVES BY REPETITIOUS MOVEMENT OF RELATIVELY SMALL UNITS OF EXPLOSIVES INTO THE BOREHOLES COMPRISING A CLAMPING MEMBER PROVIDED WITH A CONTAINER HAVING A WALL OF RESILIENT MATERIAL AND FORMED TO SEIZE SAID ELONGATED MEMBER, AN ACTUATOR COMPRISING A HOUSING AND A PISTON DISPOSED WITHIN SAID HOUSING, SAID HOUSING AND SAID PISTON DISPLACEABLE RELATIVE TO ONE ANOTHER BY RECIPROCATIVE MOTION OF ONE OF THEM, MEANS TO CONNECT SAID CLAMPING MEMBER WITH THE MOVABLE PART OF SAID ACTUATOR, A SOURCE OF PRESSURE MEDIUM, AND AUTOMATIC MEANS TO CONNECT SAID CONTAINER AND ALTERNATELY ONE OR THE OTHER SIDE OF THE MOVABLE PART OF SAID ACTUATOR TO SAID SOURCE OF PRESSURE MEDIUM TO PRODUCE THE DISPLACEMENT OF SAID ELONGATED MEMBER.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |