US3922107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewer tapping method and apparatus
Assignee: Individual
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Filing: 1973-05-31
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Granted: 1975-11-25
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Expires: 1993-05-31
Abstract
Abstract A sewer main is tapped to receive a branch connection by employing a core drill which is secured to the side of the sewer main for the drilling operation, after which a branch connecting device is secured to the main in substantially the same manner as the core drill was theretofore secured and over the aperture provided by the core drill. The core drill is supplied with a core retaining attachment for preventing loss of the core within the sewer main. A rapidly installed branch connecting device includes a toroidal seal for supporting a branch pipe in a resilient manner.
Inventors
- 👤 Dwight W Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:54
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/044; B25; B25H; B25H1/00; B25H1/0021; B25H1/0057; B25H1/0064; F; F16; F16L; F16L41/00; F16L41/002; F16L41/04; B23B2215/00; B23B2215/72; B23B2226/00; B23B2226/75; Y; Y10; Y10T; Y10T408/00; Y10T408/50; Y10T408/55; Y10T408/551; Y10T408/552; Y10T408/561; Y10T408/5619; Y10T408/89; Y10T408/895
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
129 words
A core drill having a drill bit, means for rotating said drill bit, a supporting base, and a standard for supporting said means for rotating said drill bit from said base, said base being positionable for receiving and engaging the side of a sewer main for directing the drill bit toward a core area in the side wall of said sewer main to be removed to provide an aperture for attachment of a branch connection to said sewer main, a connecting member for removably securing said core area to said drill bit for preventing loss of a drilled core within said sewer main, and swivel means connected to said connecting member, said connecting member and said swivel means being operatively connected between said core area and said drill bit.
Claim 2
Dependent Claim
129 words
A core drill having a drill bit, means for rotating said drill bit, a supporting base, and a standard for supporting said means for rotating said drill bit from said base, said base being positionable for receiving and engaging the side of a sewer main for directing the drill bit toward a core area in the side wall of said sewer main to be removed to provide an aperture for attachment of a branch connection to said sewer main, a connecting member for removably securing said core area to said drill bit for preventing loss of a drilled core within said sewer main, and swivel means connected to said connecting member, said connecting member and said swivel means being operatively connected between said core area and said drill bit.
Claim 3
Dependent Claim
30 words
The apparatus according to claim 1 wherein the connecting member extends longitudinally through the interior of said drill bit and is secured to the top wall of said drill bit.
Claim 4
Dependent Claim
17 words
The apparatus according to claim 1 including means for removably securing said base to said sewer main.
Claim 5
Dependent Claim
115 words
A core drill base comprising: means for securing a standard to said base for supporting a core drill, said base having an underside having means for receiving and engaging the side of a substantially cylindrical sewer main at at least spaced locations around the circumference thereof on opposite sides of the center of the core area to be removed by said core drill to provide an aperture in said sewer main, and means for removably securing the base to the side of the sewer main including a pair of pin means for insertion through holes drilled in the sides of said sewer main and members for connecting said pin means to sides of said base.
Claim 6
Dependent Claim
115 words
A core drill base comprising: means for securing a standard to said base for supporting a core drill, said base having an underside having means for receiving and engaging the side of a substantially cylindrical sewer main at at least spaced locations around the circumference thereof on opposite sides of the center of the core area to be removed by said core drill to provide an aperture in said sewer main, and means for removably securing the base to the side of the sewer main including a pair of pin means for insertion through holes drilled in the sides of said sewer main and members for connecting said pin means to sides of said base.
Claim 7
Dependent Claim
60 words
The base according to claim 4 wherein the underside of said base is provided with at least three engaging points for engaging the side wall of said sewer main, two of which engage the side wall of said sewer main on opposite sides of a diameter of said aperture which is parallel to the longitudinal axis of said sewer main.
Claim 8
Dependent Claim
96 words
The base according to claim 5 wherein said base is provided with at least one small aperture at the side of said base, said means for removably securing the base to the side of the sewer main including a threaded member extending through said small aperture for securing to the sewer main underneath said base, and a mating threaded member for engaging the first mentioned threaded member above said small aperture, said mating threaded member being rotatable for providing tension between said base and said sewer main to removably secure said base to said sewer main.
Claim 9
Dependent Claim
48 words
The base according to claim 6 wherein said mating threaded member is provided with internal threads and a handle engaging the exterior of said mating threaded member for operating disposition in substantially perpendicular relation to the centerline of said mating threaded member for rotating said mating threaded member.
Claim 10
Dependent Claim
47 words
The base according to claim 4 further provided with an aperture larger in diameter than said drill bit and located in the direction of movement of said drill bit through which said drill bit is adapted to pass with clearance toward the side of the sewer main.
Claim 11
Dependent Claim
104 words
A core drill base comprising: means for securing a standard to said base for supporting a core drill, said base having an underside having means for receiving and stably engaging the side of a substantially cylindrical sewer main in the vicinity of a core area to be removed by said core drill to provide an aperture in said sewer main, and means for removably securing the base to the side of the sewer main including a pair of pin means for insertion through holes drilled in the sides of said sewer main and members for connecting said pin means to sides of said base.
Claim 12
Dependent Claim
104 words
A core drill base comprising: means for securing a standard to said base for supporting a core drill, said base having an underside having means for receiving and stably engaging the side of a substantially cylindrical sewer main in the vicinity of a core area to be removed by said core drill to provide an aperture in said sewer main, and means for removably securing the base to the side of the sewer main including a pair of pin means for insertion through holes drilled in the sides of said sewer main and members for connecting said pin means to sides of said base.
Claim 13
Independent Claim
91 words
A device for severing and removably securing a core area from its surroundings comprising a core drill bit haviNg an interior portion for receiving said core area, a fastener secured to said core area, swivel means connected to said fastener and an elongated connecting member attached by one of its ends to said swivel means and by another end to the interior of said drill bit with the drill bit positioned over said core area for turning said connecting member with relative rotation between the drill bit and the core area.
Claim 14
Independent Claim
91 words
A device for severing and removably securing a core area from its surroundings comprising a core drill bit haviNg an interior portion for receiving said core area, a fastener secured to said core area, swivel means connected to said fastener and an elongated connecting member attached by one of its ends to said swivel means and by another end to the interior of said drill bit with the drill bit positioned over said core area for turning said connecting member with relative rotation between the drill bit and the core area.
Claim 15
Dependent Claim
23 words
The device according to claim 10 wherein said connecting member includes extensible biasing means yieldably urging said core area toward said drill bit.
Claim 16
Dependent Claim
45 words
The device according to claim 11 wherein said biasing means comprises a longitudinally extending spring connected between said swivel means and an upper interior portion of the drill bit, said swivel means comprising at least one line swivel connected to an end of said spring.
Claim 17
Dependent Claim
19 words
The device according to claim 12 also including a line swivel connected to the remaining end of said spring.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |