Patent US3689031A successfully refreshed from Google Patents.
US3689031A
Expired / Lapsed
US
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Apparatus for installing pull lines in conduits
Assignee: Benjamin Electric Manufacturing Co
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Filing: 1971-01-14
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Granted: 1972-09-05
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Expires: 1991-01-14
Abstract
Abstract An apparatus for selectively passing either a cordage pull line or ribbon-like tape pull line secured to a carrier plug through a conduit in response to a fluid pressure differential therein. The apparatus comprises a tubular conduit adapter having a wall defining a passageway for transmitting a fluid pressure therethrough, with one end of the adapter being positionable at the entrance end of the conduit and the other end of the adapter being attachable to a source of fluid pressure. A pull line entrance extends through the wall of the adapter for selective introduction into the passageway of either the cordage or tape pull line without undue loss of fluid therethrough, and comprises a first opening closely conforming to the cross-sectional configuration of the cordage pull line, and a second opening closely conforming to the cross-sectional configuration of the tape pull line. In one disclosed embodiment, the two openings are spaced, and provision is made for selectively covering either one or both of the openings. In a second embodiment, the two openings have portions thereof coinciding such that the total area of the two openings is less than the sum of their individual areas. The second embodiment also includes a cover hingedly mounted adjacent the two openings to selectively close the same.
Inventors
- 👤 Howard G Ruddick
- 👤 Kenneth H Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/06; H02G1/08; H02G1/086
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
182 words
An apparatus for selectively passing a cordage pull line of generally circular cross section, or a tape pull line of generally thin, rectangular cross section, and secured to a carrier plug, into and through a conduit in response to a fluid pressure differential therein, said apparatus comprising a conduit adapter having a wall defining a passageway for transmitting a fluid therethrough, means at one end of said adapter for positioning the same in fluid communication with the entrance end of the conduit, and means at the other end of the adapter for selectively attaching the same to a source of fluid pressure or a vacuum, and means defining an entrance extending through said wall intermediate the ends of the adapter for selective introduction into the fluid passageway of the cordage pull line or tape pull line without undue loss of fluid therethrough, said entrance means comprising a first opening closely conforming to the cross-sectional configuration of the cordage pull line and a second opening extending parallel to said first opening and closely conforming to the cross-sectional configuration of the tape pull line.
Claim 2
Independent Claim
182 words
An apparatus for selectively passing a cordage pull line of generally circular cross section, or a tape pull line of generally thin, rectangular cross section, and secured to a carrier plug, into and through a conduit in response to a fluid pressure differential therein, said apparatus comprising a conduit adapter having a wall defining a passageway for transmitting a fluid therethrough, means at one end of said adapter for positioning the same in fluid communication with the entrance end of the conduit, and means at the other end of the adapter for selectively attaching the same to a source of fluid pressure or a vacuum, and means defining an entrance extending through said wall intermediate the ends of the adapter for selective introduction into the fluid passageway of the cordage pull line or tape pull line without undue loss of fluid therethrough, said entrance means comprising a first opening closely conforming to the cross-sectional configuration of the cordage pull line and a second opening extending parallel to said first opening and closely conforming to the cross-sectional configuration of the tape pull line.
Claim 3
Dependent Claim
29 words
The apparatus as defined in claim 1 wherein said first and second openings are spaced, and said apparatus further including means for selectively covering either one of said openings.
Claim 4
Dependent Claim
31 words
The apparatus as defined in claim 1 wherein said first and second openings are spaced, and said apparatus further including means for selectively covering either one or both of said openings.
Claim 5
Dependent Claim
40 words
The apparatus as defined in claim 1 wherein said first and second openings have portions thereof coinciding such that the total area of said first and second openings is less than the sum of the individual areas of the same.
Claim 6
Dependent Claim
17 words
The apparatus as defined in claim 4 further including means for selectively covering both of said openings.
Claim 7
Dependent Claim
22 words
The apparatus as defined in claim 4 further comprising a cover hingedly mounted adjacent said entrance means to selectively close the same.
Claim 8
Dependent Claim
26 words
The apparatus as defined in claim 4 wherein a transversely extending handle is secured to said adapter to facilitate retention of the same by the user.
Claim 9
Independent Claim
228 words
An apparatus for selectively passing either a cordage pull line of generally circular cross-section, or a tape pull line of generally thin, rectangular cross-section, and secured to a carrier plug, into and through a conduit in response to a fluid pressure differential therein, said apparatus comprising a tubular conduit adapter including a wall defining a passageway for transmitting a fluid therethrough, and having a generally right angled bend intermediate the ends thereof, means at one end of said adapter for selectively positioning the same in substantially sealed fluid communication with the entrance end of a conduit, and means at the other end of the adapter for selectively attaching the same to either a source of fluid pressure or a vacuum, and means defining an entrance extending through said wall adjacent said bend for selective introduction into the fluid passageway of the cordage pull line or tape pull line without excessive loss of fluid therethrough, said entrance means comprising a first wall having first and second spaced openings extending therethrough, said first opening closely conforming to the cross-sectional configuration of the cordage pull line and said second opening closely conforming to the cross-sectional configuration of the tape pull line, and means for selectively either covering one of said openings while permitting passage of the appropriate pull line through the other of said openings or covering both of said openings.
Claim 10
Independent Claim
228 words
An apparatus for selectively passing either a cordage pull line of generally circular cross-section, or a tape pull line of generally thin, rectangular cross-section, and secured to a carrier plug, into and through a conduit in response to a fluid pressure differential therein, said apparatus comprising a tubular conduit adapter including a wall defining a passageway for transmitting a fluid therethrough, and having a generally right angled bend intermediate the ends thereof, means at one end of said adapter for selectively positioning the same in substantially sealed fluid communication with the entrance end of a conduit, and means at the other end of the adapter for selectively attaching the same to either a source of fluid pressure or a vacuum, and means defining an entrance extending through said wall adjacent said bend for selective introduction into the fluid passageway of the cordage pull line or tape pull line without excessive loss of fluid therethrough, said entrance means comprising a first wall having first and second spaced openings extending therethrough, said first opening closely conforming to the cross-sectional configuration of the cordage pull line and said second opening closely conforming to the cross-sectional configuration of the tape pull line, and means for selectively either covering one of said openings while permitting passage of the appropriate pull line through the other of said openings or covering both of said openings.
Claim 11
Dependent Claim
37 words
The apparatus as defined in claim 8 wherein said means for selectively covering said openings comprises a Second wall member, said first and second wall members being mounted in juxtaposition and being movable relative to each other.
Claim 12
Dependent Claim
45 words
The apparatus as defined in claim 9 wherein said second wall member includes an aperture therein adapted to selectively communicate with either of said first and second openings while closing the other opening, or to be positioned intermediate said openings and close both said openings.
Claim 13
Dependent Claim
53 words
The apparatus as defined in claim 8 wherein said means for positioning the adapter in communication with the entrance end of the conduit comprises a resilient sealing ring defining an external surface of truncated conical shape adapted to partially enter and sealingly engage the wall of the conduit at the entrance end thereof.
Claim 14
Dependent Claim
43 words
The apparatus as defined in claim 8 wherein said means for positioning the adapter in communication with the entrance end of the conduit comprises a resilient flat annular ring defining a front surface adapted to sealingly engage the entrance end of the conduit.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |