US3910474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing severing tool
Assignee: KING JOHN O JUN
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Filing: 1974-04-05
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Granted: 1975-10-07
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Expires: 1994-04-05
Abstract
Abstract A tubing severing tool designed especially for adjusting the length of a thin walled tubular sleeve. The severing tool includes an internal support mandrel for internally supporting the sleeve on one side of the plane along which it is to be severed which has a recess at the projecting end, and a piercing member externally engaging the sleeve on the same side of the severance plane as the internal support mandrel and overlying the recess so that the piercing member pierces the sleeve at the severance plane as the mandrel and piercing member are forced toward each other. The mandrel and piercing member may be mounted in plier-type carriers to pivot the mandrel and piercing member with respect to each other. A holding tool may be provided to support the sleeve along the severance plane.
Inventors
- 👤 Jr John O King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:36
CPC Classifications
B; B23; B23D; B23D21/00; B23D21/06; Y; Y10; Y10T; Y10T225/00; Y10T225/30; Y10T225/304; Y10T225/307; Y10T225/321; Y10T225/325
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
246 words
Apparatus for adjusting the length of thin walled tubular sleeves including: an internal support mandrel slidably receivable into the tubular sleeve from one end thereof having an external support surface with a configuration conforming to the internal configuration of the sleeve to internally support the sleeve about the circumference thereof and a projecting end selectively aligned with that plane at which the sleeve is to be severed, said support mandrel defining a piercing recess therein adjacent to and opening onto both said projecting end and said external support surface adjacent said projecting end so that that portion of the sleeve overlying said piercing recess is not internally supported; a piercing member including a piercing point, said piercing point having a piercing tip thereon constructed and arranged to pierce the sleeve in that plane at which the sleeve is to be severed in alignment with said projecting end of said internal support member and said recess therein; and, carrier means mounting said internal support mandrel and said piercing member so that said piercing tip is in alignment with said projecting end of and said recess in said internal support mandrel when said piercing tip pierces the sleeve for selectively moving said piercing member toward the sleeve to cause said piercing tip to first pierce the sleeve at that plane along which the sleeve is to be severed, and then to force a portion of the sleeve adjacent said plane into said recess on said internal support mandrel.
Claim 2
Dependent Claim
246 words
Apparatus for adjusting the length of thin walled tubular sleeves including: an internal support mandrel slidably receivable into the tubular sleeve from one end thereof having an external support surface with a configuration conforming to the internal configuration of the sleeve to internally support the sleeve about the circumference thereof and a projecting end selectively aligned with that plane at which the sleeve is to be severed, said support mandrel defining a piercing recess therein adjacent to and opening onto both said projecting end and said external support surface adjacent said projecting end so that that portion of the sleeve overlying said piercing recess is not internally supported; a piercing member including a piercing point, said piercing point having a piercing tip thereon constructed and arranged to pierce the sleeve in that plane at which the sleeve is to be severed in alignment with said projecting end of said internal support member and said recess therein; and, carrier means mounting said internal support mandrel and said piercing member so that said piercing tip is in alignment with said projecting end of and said recess in said internal support mandrel when said piercing tip pierces the sleeve for selectively moving said piercing member toward the sleeve to cause said piercing tip to first pierce the sleeve at that plane along which the sleeve is to be severed, and then to force a portion of the sleeve adjacent said plane into said recess on said internal support mandrel.
Claim 3
Dependent Claim
113 words
The apparatus of claim 1 further including at least one stepped plate member comprising a series of step portions integral with each other in an end-to-end relationship, said step portions increasing in thickness from one end of said plate member to the other, each of said step portions having a common straight bearing surface and a separate straight bearing surface opposed to said common surface and parallel thereto, each of said step portions defining at least one passage therethrough normal to said surfaces having a diameter just suffIciently large to receive the thin walled tubular sleeve therethrough so that the sleeve is supported externally about the circumference thereof within said stepped plate member.
Claim 4
Dependent Claim
212 words
The apparatus of claim 1 further including a pair of stepped plate members, each of said stepped plate members comprising a series of step portions integral with each other in an end-to-end relationship, said step portions of each of said plate members increasing in thickness from one end of said plate member to the other, each of said step portions having a common straight bearing surface and a separate straight bearing surface opposed to said common surface and parallel thereto, each of said step portions of each of said plate members defining at least one passage therethrough having a diameter just sufficiently large to receive the thin walled tubular sleeve therethrough, and further including guide means for maintaining said common bearing surfaces of both of said stepped plate members in juxtaposition with each other and for permitting sliding movement of said plate members relative to each other for any selected one of said passages in one of said stepped plate members to be placed in registration with any selected one of said passages in the other of said stepped plate members for insertion of the sleeve through said passages in registration with each other so that the sleeve is supported externally about the circumference thereof within both of said stepped plate members.
Claim 5
Dependent Claim
87 words
The apparatus of claim 1 wherein said carrier means is a plier-type mechanism comprising a pair of handles pivoted together, each of said handles including a jaw member integral therewith, said jaw members arranged in opposition to each other so that said jaw members are moved toward each other as said handles are moved toward each other, each of said jaw members defining a bore therein, said internal support mandrel carried by one of said bores and said piercing member carried by said other of said bores.
Claim 6
Dependent Claim
26 words
The apparatus of claim 4 wherein said recess in said support mandrel has a V-shaped cross-section and opens onto said projecting end of said support mandrel.
Claim 7
Dependent Claim
29 words
The apparatus of claim 5 wherein said recess has a maximum depth at said projecting end of said mandrel and decreases in depth along the length of said recess.
Claim 8
Dependent Claim
51 words
The apparatus of claim 4 wherein said piercing point defines an end surface substantially aligned with that plane along which the sleeve is to be severed when said internal support mandrel and said piercing point are moved toward each other, said tip located at said end surface for piercing the sleeve.
Claim 9
Dependent Claim
84 words
The apparatus of claim 1 wherein said recess in said support mandrel has a V-shaped cross-section said recess having a maximum depth at said projecting end of said mandrel and decreasing in depth along the length of said recess, and wherein said piercing point defines an end surface substantially aligned with that plane along which the sleeve is to be severed when said mandrel and said piercing point are moved toward each other said tip located at said end surface for piercing the sleeve.
Claim 10
Dependent Claim
104 words
The apparatus of claim 2 wherein said recess in said support mandrel has a V-shaped cross-section said recess having a maximum depth at said projecting end of said mandrel and decreasing in depth along the length of said recess, and wherein said piercing point defines an end surface substantially aligned with that plane along which the sleeve is to be severed when said mandrel and said piercing member are moved toward each other, said end surface abutting said common bearing surface of said stepped plate member to locate said piercing tip at the plane of said common bearing surface of said stepped plate member.
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |