US3698274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for piercing openings in tubing
Assignee: VOGEL TOOL AND DIE CORP
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Filing: 1971-05-14
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Granted: 1972-10-17
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Expires: 1991-05-14
Abstract
Abstract A tube piercing apparatus includes mandrel members positioned within the tube for supporting the inner wall of the tube. The tube is positioned on a supporting member having an arcuate seat. One of the mandrel members includes an inner wedge shaped surface. Wedge means is movable into engagement with the inner surface to spread the mandrel members apart against the inner wall of the tube. One of the mandrel members includes a bore and cutting edge which cooperates with a preparing punch for cutting openings in the wall of the tube.
Inventors
- 👤 Edward I Coulon
- 👤 Benny Jay Miller
- 👤 Dale C Mohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:51
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/28; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0596; Y10T83/384; Y10T83/395; Y10T83/748; Y10T83/7487; Y10T83/7493; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
219 words
Apparatus for piercing a hole through the wall of a tube comprising: a base, a support mounted on said base, said support including an arcuately recessed seating portion adapted to encircle a portion of the wall of said tube in supporting relation, a first mandrel member supported on said base in aligned spaced relation relative to said seating portion, said first mandrel member having an outer arcuate surface similar in configuration and facing said seating portion and a first inner surface, a second mandrel member spaced relative to said first mandrel member and including an outer arcuate surface and an inner second surface spaced from and facing said first inner surface, the inner surfaces of one of said mandrel members being tapered in wedge shaped configuration, said second mandrel member having a bore including a cutting edge in said outer surface, a punch aligned with said cutting edge and adapted to engage and shear a hole through the wall of a tube with said tube being supported on said arcuate seating portion and said mandrel members being positioned within said tube, and wedge means movable between and in engagement with the inner surfaces to move said outer surfaces into firm engagement with the inner surface of said tube wall whereby said tube is supported against deformation during said shearing.
Claim 2
Dependent Claim
219 words
Apparatus for piercing a hole through the wall of a tube comprising: a base, a support mounted on said base, said support including an arcuately recessed seating portion adapted to encircle a portion of the wall of said tube in supporting relation, a first mandrel member supported on said base in aligned spaced relation relative to said seating portion, said first mandrel member having an outer arcuate surface similar in configuration and facing said seating portion and a first inner surface, a second mandrel member spaced relative to said first mandrel member and including an outer arcuate surface and an inner second surface spaced from and facing said first inner surface, the inner surfaces of one of said mandrel members being tapered in wedge shaped configuration, said second mandrel member having a bore including a cutting edge in said outer surface, a punch aligned with said cutting edge and adapted to engage and shear a hole through the wall of a tube with said tube being supported on said arcuate seating portion and said mandrel members being positioned within said tube, and wedge means movable between and in engagement with the inner surfaces to move said outer surfaces into firm engagement with the inner surface of said tube wall whereby said tube is supported against deformation during said shearing.
Claim 3
Dependent Claim
51 words
The invention in accordance with claim 1, one of said mandrel members having opposite side walls connecting said inner tapering surface and said outer surfaces, said side walls being laterally spaced from the inner surface of the wall of a tube to accommodate a variety of tubes of different inner diameters.
Claim 4
Dependent Claim
34 words
The invention in accordance with claim 1, said wedge means having an extension extending longitudinally through one end of said tube and power actuated means connected to said extension for reciprocating said wedge means.
Claim 5
Dependent Claim
59 words
The invention in accordance with claim 1, said mandrel members having spring means connected thereto adapted to move said members toward one another when said wedge means is moved relative to said inner surfaces whereby said outer surfaces are moved out of engagement with the inner surface of the wall of said tube and said tube may be removed.
Claim 6
Dependent Claim
16 words
The invention in accordance with claim 3, said power actuated means including a fluid extensible device.
Claim 7
Dependent Claim
50 words
The invention in accordance with claim 3, including spring means connecting said mandrel members to normally bias said inner surfaces toward one another whereby during movement of said wedge means in one direction said outer surfaces of said mandrel members are released from engagement with said walls of said tube.
Claim 8
Dependent Claim
44 words
The invention in accordance with claim 5, said fluid extensible device being actuated by a compressible fluid, whereby the movement of said wedge means in one direction in response to actuation of said device is limited by the inner diameter surface of said tube.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |