Patent US5111810A successfully refreshed from Google Patents.
Patent US3852015A successfully refreshed from Google Patents.
US3852015A
Expired / Lapsed
US
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Belling and handling apparatus for plastic pipe
Assignee: ASC Industries Inc
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Filing: 1973-03-12
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Granted: 1974-12-03
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Expires: 1993-03-12
Abstract
Abstract A bell forming apparatus for automatically forming a bell shape in extruded plastic pipe. The apparatus receives cut lengths of pipe in a first trough section as they travel directly from the extruder. The first trough releases successive lengths of pipe to roll gravitationally in a transverse direction to a collecting station. The pipes are individually moved from the collecting station to roll down a transverse inclined track and into a second trough. This trough aligns one end of the pipe with the opening of an oven at a heating station. A cylinder positions the pipe longitudinally relative to the oven and another cylinder is activated to move the oven over a selected length of the pipe. After a prescribed time interval, the oven is retracted and the pipe is transferred to a third trough. This trough aligns the pipe with a clamp and mandrel unit. A cylinder positions the pipe longitudinally in the clamp, the clamp jaws are tightened and the mandrel is forced into the heated end of the pipe. After a time interval, the mandrel is extracted, leaving an enlarged bell shape in the end of the pipe. The finished belled pipe is then released to roll gravitationally to a storage station for further processing.
Inventors
- 👤 P Stansbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:10
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B29B13/025; B29C; B29C31/00; B29C31/002; B29C57/00; B29C57/02; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10S; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
352 words
A belling and handling apparatus for plastic pipe in preselected lengths of constant diameter along a straight pipe axis, comprising: first pipe support means in the form of an upwardly open trough for receiving an individual pipe length and fixing the location of the pipe axis; pipe delivery means for moving individual pipe lengtHs to said first pipe support means; first pipe locating means at said first pipe support means for longitudinally shifting the position of each pipe along its axis while on said first pipe support means to thereby move the pipe to a preselected longitudinal location; pipe heating means movably mounted at one end of said first pipe support means for movement with respect to said first pipe support means between a retracted position clear of pipe at said preselected longitudinal location and an extended position wherein one end of the pipe is received within the pipe heating means; second pipe support means in the form of an upwardly open trough transversely and elevationally spaced below the elevation of the trough of said first pipe support means and parallel thereto, said second pipe support means being adapted to hold an individual pipe length; pipe transfer means for moving individual pipe lengths from said first pipe support means to said second pipe support means by gravity; second pipe locating means at said second pipe support means for longitudinally shifting each pipe length therein along its pipe axis to a preselected longitudinal location thereon; pipe clamping means for fixing the location of each pipe at said last-mentioned preselected longitudinal location along the second pipe locating means; pipe belling means movably mounted at one end of said second pipe support means for movement with respect to said second pipe support means between a retracted position clear of pipe at said last-mentioned preselected longitudinal location on said second pipe support means and an extended position wherein the heated end of pipe held by said pipe clamping means is engaged by the pipe forming means to alter its circumferential configuration; and pipe discharge means for removing each pipe length from said second pipe locating means.
Claim 2
Dependent Claim
352 words
A belling and handling apparatus for plastic pipe in preselected lengths of constant diameter along a straight pipe axis, comprising: first pipe support means in the form of an upwardly open trough for receiving an individual pipe length and fixing the location of the pipe axis; pipe delivery means for moving individual pipe lengtHs to said first pipe support means; first pipe locating means at said first pipe support means for longitudinally shifting the position of each pipe along its axis while on said first pipe support means to thereby move the pipe to a preselected longitudinal location; pipe heating means movably mounted at one end of said first pipe support means for movement with respect to said first pipe support means between a retracted position clear of pipe at said preselected longitudinal location and an extended position wherein one end of the pipe is received within the pipe heating means; second pipe support means in the form of an upwardly open trough transversely and elevationally spaced below the elevation of the trough of said first pipe support means and parallel thereto, said second pipe support means being adapted to hold an individual pipe length; pipe transfer means for moving individual pipe lengths from said first pipe support means to said second pipe support means by gravity; second pipe locating means at said second pipe support means for longitudinally shifting each pipe length therein along its pipe axis to a preselected longitudinal location thereon; pipe clamping means for fixing the location of each pipe at said last-mentioned preselected longitudinal location along the second pipe locating means; pipe belling means movably mounted at one end of said second pipe support means for movement with respect to said second pipe support means between a retracted position clear of pipe at said last-mentioned preselected longitudinal location on said second pipe support means and an extended position wherein the heated end of pipe held by said pipe clamping means is engaged by the pipe forming means to alter its circumferential configuration; and pipe discharge means for removing each pipe length from said second pipe locating means.
Claim 3
Dependent Claim
79 words
An apparatus as set out in claim 1 wherein said pipe heating means comprises an oven at said one end of said first pipe support means, said oven having a central heating chamber centered along an axis coaxial with the axis of pipe on said first pipe support means, said oven having a heating chamber including a coaxial opening facing outward toward said first pipe support means and adapted to receive said one end of the individual pipe length.
Claim 4
Dependent Claim
69 words
An apparatus as set out in claim 1 wherein said first pipe locating means comprises a solid surface outward of the remaining end of said first pipe support means and perpendicular to the axis of the pipe length located upon said first pipe support means; said surface being movable along the pipe axis for abutting and enlosing the end of the pipe length opposite to said one end thereof.
Claim 5
Dependent Claim
95 words
An apparatus as set out in claim 1 wherein said pipe transfer means comprises: means operatively connected to the trough of said first pipe support means for selectively pivoting the trough about a longitudinal axis parallel to the axis of a pipe length thereon to thereby cause the pipe to roll out one side of the trough in the direction of said second pipe support means; and inclined tracks extending between the troughs of said first and second pipe support means for guiding the rolling pipe into the trough of said second pipe support means.
Claim 6
Dependent Claim
300 words
A belling and handling apparatus for plastic pipe having a constant preselected length, comprising: a supporting framework; a first upwardly open longitudinal trough mounted on said framework for pivotal movement about a first longitudinal axis between a balanced upright support position for locating pipe thereon and a tilted position for causing pipe thereon to roll from the trough transversely across the framework; a second upwardly open longitudinal trough coextensive in length to said first trough and mounted on said framework at a position parallel and transversely spaced from the first trough for pivotal movement about a second longitudinal axis between a balanced support position For locating pipe thereon and a tilted position for causing pipe thereon to roll to one side across the supporting framework; first and second power operating means operatively connected between the framework and said first and second troughs, respectively, for selectively moving said troughs between their balanced upright support positions and their tilted positions; guide means on said framework for supporting engagement by pipe leaving said first trough, said guide means being extended transversely across the framework between the first trough and the second trough to direct pipe onto the second trough; an oven at one longitudinal end of the first trough, said oven having a heated chamber coaxial with pipe located on said first trough and being movably mounted on the framework independent of the trough for movement along its axis between a retracted position clear of pipe positioned on the first trough and an extended position wherein the adjacent ends of pipe on the first trough is received within the heated chamber of the oven; and a pipe belling means movably mounted on the apparatus for movement with respect to the respective pipe support framework between a retracted position and an operative extending position.
Claim 7
Dependent Claim
300 words
A belling and handling apparatus for plastic pipe having a constant preselected length, comprising: a supporting framework; a first upwardly open longitudinal trough mounted on said framework for pivotal movement about a first longitudinal axis between a balanced upright support position for locating pipe thereon and a tilted position for causing pipe thereon to roll from the trough transversely across the framework; a second upwardly open longitudinal trough coextensive in length to said first trough and mounted on said framework at a position parallel and transversely spaced from the first trough for pivotal movement about a second longitudinal axis between a balanced support position For locating pipe thereon and a tilted position for causing pipe thereon to roll to one side across the supporting framework; first and second power operating means operatively connected between the framework and said first and second troughs, respectively, for selectively moving said troughs between their balanced upright support positions and their tilted positions; guide means on said framework for supporting engagement by pipe leaving said first trough, said guide means being extended transversely across the framework between the first trough and the second trough to direct pipe onto the second trough; an oven at one longitudinal end of the first trough, said oven having a heated chamber coaxial with pipe located on said first trough and being movably mounted on the framework independent of the trough for movement along its axis between a retracted position clear of pipe positioned on the first trough and an extended position wherein the adjacent ends of pipe on the first trough is received within the heated chamber of the oven; and a pipe belling means movably mounted on the apparatus for movement with respect to the respective pipe support framework between a retracted position and an operative extending position.
Claim 8
Dependent Claim
52 words
An apparatus as set out in the claim 5 further comprising pusher means movably mounted to the supporting framework at the remaining end of said first trough and coaxially centered relative to pipe located on the trough for abutting the pipe and pushing it along the trough to a preselected longitudinal position.
Claim 9
Dependent Claim
88 words
An apparatus as set out in claim 6, wherein said pipe belling means comprises: a pipe-forming mandrel mounted on said framework at the end of the second trough corresponding to said one end of the first trough, said mandrel being coaxial with pipe on said second trough and being movably supported on the framework for movement independent of said second trough between a retracted position clear of pipe on the second trough and an extended position wherein the mandrel is inserted within pipe located on the second trough.
Claim 10
Dependent Claim
41 words
An apparatus as set out in claim 6 further comprising: a clamp mechanism on the framework adjacent to said second trough for selectively engaging and fixing the position of a pipe on said second trough prior to insertion of said mandrel.
References Cited (Backward Citations)
US3205535A
Cited
US3672804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |