Patent US4669745A successfully refreshed from Google Patents.
Patent US3835541A successfully refreshed from Google Patents.
US3835541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ellipsoid marker and template tracer
Assignee: Individual
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Filing: 1973-05-21
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Granted: 1974-09-17
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Expires: 1993-05-21
Abstract
Abstract A device for determining the apertures to be cut when mating two pipes is disclosed. The device is attached to a first one of the pipes and a pointer is angularly and positionally aligned with the center of the desired pipe junction. A first marking element is rotated about the pointer at a radius corresponding to the internal radius of a second one of the pipes to mark the aperture to be formed in the first pipe. The second pipe or a replica thereof is secured by a clamp, and aligned with the pointer. A second marking element is rotated about the second pipe to mark the end cut of the second pipe. If it is not feasible to mount the second pipe, the replica, wrapped with a sheet of paper, is mounted in its place. The sheet, after being scribed by the second marking element, is used as a template to define the end cut of the second pipe. The device also includes provisions for accommodating various junction angles and pipe sizes.
Inventors
- 👤 L Whitworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:35
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/005; B25; B25H; B25H7/00; B25H7/005
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
311 words
A device for determining the cuts to be made in each of a plurality of pipes to be joined to one another, said device comprising, in combination: a. attachment means for detachable securing said device to a first one of the plurality of pipes; b. an arm extending from said attachment means lateral to the first pipe; c. a shaft pivotally mounted within said arm; d. means for aligning the axis of said shaft with the axis of a second one of the plurality of pipes to be joined to the first pipe; e. a pointer extending from said shaft, said pointer being axially positionable to contact the surface of the first pipe at the center of the junction of the plurality of pipes; f. a yoke rotatably mounted upon said shaft, said yoke including indicia representative of the radius of the second pipe; g. a bearing cage mounted on said yoke, said bearing cage being fixable at varying distances along said yoke representative of tHe radius of the second pipe; h. a bar longitudinally slideable through said bearing cage, and movable about said shaft while maintaining said bar parallel to said shaft; i. marking means secured to said bar for tracing a line upon the surface of the first pipe about said pointer as said bar is rotated about said shaft; and j. indication means forming a part of said bar for indicating a series of axial displacements of said bar relative to said bearing case as said bar is rotated about said shaft; whereby said marking means traces a line upon the surface of the first pipe which line corresponds to the cut to be made in the first pipe, and the series of displacements of said bar with respect to the rotational position of said bar is representative of the cut to be made in the second pipe.
Claim 2
Independent Claim
311 words
A device for determining the cuts to be made in each of a plurality of pipes to be joined to one another, said device comprising, in combination: a. attachment means for detachable securing said device to a first one of the plurality of pipes; b. an arm extending from said attachment means lateral to the first pipe; c. a shaft pivotally mounted within said arm; d. means for aligning the axis of said shaft with the axis of a second one of the plurality of pipes to be joined to the first pipe; e. a pointer extending from said shaft, said pointer being axially positionable to contact the surface of the first pipe at the center of the junction of the plurality of pipes; f. a yoke rotatably mounted upon said shaft, said yoke including indicia representative of the radius of the second pipe; g. a bearing cage mounted on said yoke, said bearing cage being fixable at varying distances along said yoke representative of tHe radius of the second pipe; h. a bar longitudinally slideable through said bearing cage, and movable about said shaft while maintaining said bar parallel to said shaft; i. marking means secured to said bar for tracing a line upon the surface of the first pipe about said pointer as said bar is rotated about said shaft; and j. indication means forming a part of said bar for indicating a series of axial displacements of said bar relative to said bearing case as said bar is rotated about said shaft; whereby said marking means traces a line upon the surface of the first pipe which line corresponds to the cut to be made in the first pipe, and the series of displacements of said bar with respect to the rotational position of said bar is representative of the cut to be made in the second pipe.
Claim 3
Dependent Claim
39 words
The combination as set forth in claim 1 wherein said aligning means includes a protractor affixed to said shaft and a reference point disposed upon said arm, said reference point being coincident with the angular gradations of said protractor.
Claim 4
Dependent Claim
29 words
The combination as set forth in claim 2, including a sleeve disposed intermediate said yoke and said shaft to permit rotation of said yoke with respect to said shaft.
Claim 5
Dependent Claim
56 words
The combination as set forth in claim 3 further including: a. a collar secured to said shaft adjacent said sleeve; b. a plurality of indicia uniformly disposed about the periphery of said collar adjacent said sleeve; and c. a reference mark disposed upon said sleeve, said reference mark being selectively coincident with each of said indicia.
Claim 6
Dependent Claim
72 words
The combination as set forth in claim 4 wherein said indication means comprises a plurality of gradations located on said bar and said bearing cage includes a reference point positioned adjacent the gradations of said bar; whereby, the axial displacement of said bar in response to movement of said marking means about the surface of the first pipe can be determined with respect to each of the indicia disposed upon said collar.
Claim 7
Dependent Claim
72 words
The combination as set forth in claim 1 including: a. an expandable chuck axially aligned with said shaft for mounting the second pipe; and b. a writing element secured to said bar for marking the surface of the second pipe mounted on said chuck in response to rotation of said bar about said shaft; whereby, the cuts to be made in each of the first and second pipes can be traced simultaneously.
Claim 8
Dependent Claim
25 words
The combination as set forth in claim 6 wherein said writing element is biased toward the surface of the second pipe to ensure contact therebetween.
Claim 9
Dependent Claim
21 words
The combination as set forth in claim 7 wherein said marking means comprises a point at the end of said bar.
Claim 10
Dependent Claim
45 words
The combination as set forth in claim 7 including a piece of paper disposed about the second pipe; whereby, the marking made by said writing element on said piece of paper can be used to form a template for the cut of the second 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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |