US3612487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for pushing and pulling implements, including cables, into and from conduits and the like
Assignee: Individual
•
Filing: 1968-09-24
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Granted: 1971-10-12
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Expires: 1988-09-24
Abstract
Abstract Device for pushing and pulling implements (e.g. pipe coating testers, pipe markers, pipe cleaners, pipe spray guns) along pipes or like elongated workpieces, said device having adjacent spools or reels with spirally coiled implement feeding and operating elements wound on the respective reels, the feeding element being operative to push and pull the implement into and from the pipe (or along the pipe) while the implement operating element is unwound from or rewound onto its reel.
Inventors
- 👤 William E Raney
- 👤 Milan J Siebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:33
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/06; H02G1/08; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; B08B9/0321; B08B9/0323; B08B9/04; B08B9/043; B08B9/0433; B08B9/045; B65; B65H; B65H75/00; B65H75/02; B65H75/34; B66; B66D; B66D1/00; B66D1/02; F; F16; F16L; F16L55/00; F16L55/16; F16L55/162; F16L55/1645; F16L58/00; B66D2700/00; B66D2700/01; B66D2700/0125
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
281 words
In combination, spool means having an elongated element spirally coiled therearound; a housing journaling said spool means and rotatably embracing the outer convolution of said element and having a passage through which said element is adapted to be payed out and to be pulled in responsive to rotation of said spool means in opposite directions in said housing; a reversible electric drive motor operatively connected to said spool means thus to rotate said spool means in opposite directions in said housing; movable means mounted at the passage of said housing, being urged in the direction of payout of said element and adapted to be moved inwardly with said element upon engagement with an enlargement thereon; normally closed switch means operatively located in the path of movement of said movable means and adapted to be opened upon predetermined pulling in of said element to open the drive motor circuit; a member mounted in said housing, being urged against the outer convolution of said element and adapted to be moved away therefrom upon arching of said element away from said spool means due to resistance to payout; another normally closed switch means operatively located in the path of movement of said member and adapted to be opened upon predetermined arching of said eleMent to open the drive motor circuit; and reversing switch means controlling the direction of operation of said motor having auxiliary push and pull contacts operative with the setting of said reversing switch means to permit closing of said motor circuit only in the push position when said normally closed switch means are open and only in the pull position when said another normally closed switch means are opened, as aforesaid.
Claim 2
Dependent Claim
281 words
In combination, spool means having an elongated element spirally coiled therearound; a housing journaling said spool means and rotatably embracing the outer convolution of said element and having a passage through which said element is adapted to be payed out and to be pulled in responsive to rotation of said spool means in opposite directions in said housing; a reversible electric drive motor operatively connected to said spool means thus to rotate said spool means in opposite directions in said housing; movable means mounted at the passage of said housing, being urged in the direction of payout of said element and adapted to be moved inwardly with said element upon engagement with an enlargement thereon; normally closed switch means operatively located in the path of movement of said movable means and adapted to be opened upon predetermined pulling in of said element to open the drive motor circuit; a member mounted in said housing, being urged against the outer convolution of said element and adapted to be moved away therefrom upon arching of said element away from said spool means due to resistance to payout; another normally closed switch means operatively located in the path of movement of said member and adapted to be opened upon predetermined arching of said eleMent to open the drive motor circuit; and reversing switch means controlling the direction of operation of said motor having auxiliary push and pull contacts operative with the setting of said reversing switch means to permit closing of said motor circuit only in the push position when said normally closed switch means are open and only in the pull position when said another normally closed switch means are opened, as aforesaid.
Claim 3
Dependent Claim
42 words
The combination of claim 1 wherein said reversing switch comprises a brush shifting device for altering the energization of said drive motor, said push and pull contacts being integral with said brush shifting device and operative therewith to open and closed conditions.
Claim 4
Dependent Claim
42 words
The combination of claim 2 wherein said brush shifting device comprises a pair of concentric relatively rotatable members and said push and pull contacts comprise pairs of contacts mounted on said rotatable members, being adapted for overlapping engagement to establish electrical continuity.
Claim 5
Dependent Claim
81 words
The combination of claim 3 wherein said relatively rotatable members comprise first and second concentric rings, said first ring supporting contact devices for engagement with brushholders and for engagement with movable contacts, and said second ring supporting said brushholders and said movable contacts for cooperation respectively with the commutator of said reversible motor and said contact devices on said first ring, whereby repositioning of said second ring causes completion of the motor circuit in one of the push and pull directions.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |