Patent US4183265A successfully refreshed from Google Patents.
Patent US3244085A successfully refreshed from Google Patents.
US3244085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borehole or pipe camera
Assignee: Central Electricity Generating Board
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Filing: 1963-08-16
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Granted: 1966-04-05
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Pulfer Robert Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:18
CPC Classifications
G; G03; G03B; G03B37/00; G03B37/005; G01; G01V; G01V8/00; G01V8/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
A CAMERA FOR THE INSPECTION OF THE INSIDE WALL OF A PIPE COMPRISING AN ELONGATED TUBULAR BODY OPEN AT ONE END, A LENS WITHIN THE SAID BODY DISPLACED AXIALLY FROM SAID OPEN END, AN ANNULAR LIGHT SOURCE AROUND THE AXIS OF THE LENS FOR PROJECTING LIGHT FORWARDLY OF THE LENS BEYOND SAID OPEN END, SAID BODY INCLUDING OPAQUE MEANS EXTENDING FORWARDLY OF THE LIGHT SOURCE BETWEEN THE LIGHT SOURCE AND THE AXIS OF THE LENS TO PREVENT LIGHT FROM THE SOURCE FROM CROSSING THE AXIS OF THE LENS, AND MEANS ASSOCIATED WITH SAID LIGHT SOURCE FOR CONFINING THE FORWARDLY PROJECTED LIGHT THEREOF TO A FORWARDLY PROJECTED PATTERN DIVERGING FROM THE AXIS OF THE LENS AT AN ANGLE LESS THAN 45 DEGREES, WIND-OFF AND WIND-ON SPOOLS FOR PHOTOGRAPHIC FILM HOUSED WITHIN SAID ELONGATED BODY IN OPERATIVE RELATIONSHIP TO SAID LENS, A MOTOR HOUSING SUPPORTED AT THE OTHER END OF SAID BODY IN ALIGNMENT THEREWITH AND OF SUBSTANTIALLY SMALLER TRANSVERSE CROSS SECTION THAN SAID ELONGATED BODY, WHEREBY TO FACILITATE THE MOVEMENT OF SAID BODY AND SAID HOUSING AROUND BENDS IN THE PIPE, AN ELECTRIC MOTOR IN SAID HOUSING, MEANS IN SAID BODY FOR DRIVING SAID WIND-ON SPOOL, AND A FLEXIBLE DRIVE TRANSMITTING ELEMENT OPERATIVELY CONNECTING TO SAID MOTOR TO SAID MEANS, MEANS BEING CONNECTED TO SAID CAMERA FOR URGING THE SAME THROUGH THE PIPE.
Claim 2
Dependent Claim
222 words
A CAMERA FOR THE INSPECTION OF THE INSIDE WALL OF A PIPE COMPRISING AN ELONGATED TUBULAR BODY OPEN AT ONE END, A LENS WITHIN THE SAID BODY DISPLACED AXIALLY FROM SAID OPEN END, AN ANNULAR LIGHT SOURCE AROUND THE AXIS OF THE LENS FOR PROJECTING LIGHT FORWARDLY OF THE LENS BEYOND SAID OPEN END, SAID BODY INCLUDING OPAQUE MEANS EXTENDING FORWARDLY OF THE LIGHT SOURCE BETWEEN THE LIGHT SOURCE AND THE AXIS OF THE LENS TO PREVENT LIGHT FROM THE SOURCE FROM CROSSING THE AXIS OF THE LENS, AND MEANS ASSOCIATED WITH SAID LIGHT SOURCE FOR CONFINING THE FORWARDLY PROJECTED LIGHT THEREOF TO A FORWARDLY PROJECTED PATTERN DIVERGING FROM THE AXIS OF THE LENS AT AN ANGLE LESS THAN 45 DEGREES, WIND-OFF AND WIND-ON SPOOLS FOR PHOTOGRAPHIC FILM HOUSED WITHIN SAID ELONGATED BODY IN OPERATIVE RELATIONSHIP TO SAID LENS, A MOTOR HOUSING SUPPORTED AT THE OTHER END OF SAID BODY IN ALIGNMENT THEREWITH AND OF SUBSTANTIALLY SMALLER TRANSVERSE CROSS SECTION THAN SAID ELONGATED BODY, WHEREBY TO FACILITATE THE MOVEMENT OF SAID BODY AND SAID HOUSING AROUND BENDS IN THE PIPE, AN ELECTRIC MOTOR IN SAID HOUSING, MEANS IN SAID BODY FOR DRIVING SAID WIND-ON SPOOL, AND A FLEXIBLE DRIVE TRANSMITTING ELEMENT OPERATIVELY CONNECTING TO SAID MOTOR TO SAID MEANS, MEANS BEING CONNECTED TO SAID CAMERA FOR URGING THE SAME THROUGH THE PIPE.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |