US3747450A - Method of perforating tubes - Google Patents
Method of perforating tubes Download PDFInfo
- Publication number
- US3747450A US3747450A US00173513A US3747450DA US3747450A US 3747450 A US3747450 A US 3747450A US 00173513 A US00173513 A US 00173513A US 3747450D A US3747450D A US 3747450DA US 3747450 A US3747450 A US 3747450A
- Authority
- US
- United States
- Prior art keywords
- die
- tubular member
- slot
- recess
- punch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0481—Puncturing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0596—Cutting wall of hollow work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/384—By tool inside hollow work
- Y10T83/395—One tool having only rectilinear motion[s]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8821—With simple rectilinear reciprocating motion only
- Y10T83/8854—Progressively cutting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
- Y10T83/9411—Cutting couple type
- Y10T83/9423—Punching tool
- Y10T83/9425—Tool pair
Definitions
- the invention relates to a method for perforating slots in a tubular member of rectangular section, for example.
- the method of the invention is used in forming horizontal slots in one surface of the member at spaced-apart locations.
- Such perforated tubular members may then be used to accommodate brackets or other fittings which support shelves or drawers.
- a method of forming slots in tubular members comprising the steps of sliding a tubular member in which the slots are to be formed onto a die located in a determined position, which die has a lateral width less than that of the slot to be formed, an open-ended recess in the die extending across die, the open-ended recess being positioned adjacent the position at which the slot is to be formed in the tubular member, perforating the surface of the member with a blow from a punch, so that the blank of material is split substantially into two halves and maintaining the halves of the blank secured to the inner surface of the tubular member at the sides of the lateral extremity of the slot and turned away from the recess in the die so that a clean slot is obtained in the tubular member with no loose swarf in the die.
- the method of the invention therefore prevents the blank of material punched out of the surface of the material when forming the slot in the surface of the tubular member from remaining in the recess in the die by splitting the blank substantially into two halves, and a1 lows the ends of the two halves to remain attached to the tubular member in such a way that there is no residual or loose blank of punched-out material in the die, and thus relative longitudinal movement between the tubular member and the die is not prevented.
- the die is of less lateral extent than the slot to be formed, and since the recess in the die is open on three faces, the necessity for accurate lateral location of the die inside the tubular member is obviated.
- the die may be secured to the machine on which the punch is mounted by means of a connecting bar which passes through'the tubular member and is connected at one end to the die.
- FIG. I shows the relative positions of a punch and die, in perspective, during perforation of a surface of a tubular member of rectangular section (not shown) to provide a slot;
- FIG. 2 shows an end elevation of the rectangular tu.- bular member after perforation
- FIG. 3 shows a perspective view of a perforated tube having a series of horizontal slots formed therein.
- the apparatus for perforating a tubular metal member is shown in FIGS. 1 and 2 and comprises a punch 1 having a shank portion 2 which is flat and has a cross-section corresponding to that of the slot to be formed and terminates at the perforating end in a double taper so that it forms a triangular apex or point, and a die 4 having recess 5 which is open on the three faces as shown in FIG. 1.
- the lateral width of the die 4, and thus of the recess 5, is less than the width of the slot to be formed in a surface of a tubular member 6.
- the width of the slot to be formed is determined by the lateral width of the punch 1, which is thus wider than the width of the die. I have found that a die inch wide is suitable to form a slot /6 inch wide. It will be understood that the width of the die should be sufficient to support the surface of the member in order to obviate denting of the surface during perforation, but must be narrow enough to allow withdrawal of the die longitudinally of the member 6.
- the die 4 In use to form a slot in the tubular member 6, the die 4 is placedin the member 6 so that the surface 7 of the die abuts the underside 8 of the surface of the member 6, which is thus supported by the die.
- the die is held in position so that its upper surface engages the underside 8, and is secured to the machine on which the punch is mounted by a bar passing longitudinally through the tubular member.
- the punch and die are thus mounted in the same vertical plane, the punch being aligned with the recess.
- the punch is then brought down sharply in a position aligned with the open recess 5 in the die.
- a slot 9 is thus formed in the surface of the tubular member.
- a blank of material punched from the surface of the tubular member is cut by the shearing action of the punch into substantially two halves, which are forced downwardly into the recess 5. As the recess 5 has no side walls, the two halves of the blank are pushed apart by the punch and curl away from the slot 9 towards the underside 8 of the surface, and remain attached to the tubular member at roots 10 and 10.
- the member 6 is then drawn longitudinally of the die without hindrance while the die is held stationary by the bar passing through the tube and the punching operation is repeated at another predetermined position along the length of the tube.
- a tube having a plurality of perforations is shown in FIG. 3.
- a plurality of slots may be formed simultaneously by providing a die with the required number of recesses or slots, and a corresponding number of punches mounted in a hammer (not shown). The punches would each be aligned with one recess in the die.
- the invention thus provides a method of perforating tubular metal members in which the die is not clogged with loose swarf or blanks of metal.
- a method of forming a slot in a tubular member comprising the steps of sliding a tubular member in which the slots are to be formed onto a die located in a determined position, said die having a lateral width less than that of the slot to be formed, an open-ended recess in the said die extending across said die, said open-ended recess being positioned adjacent the posisaid tubular member with no loose swarf in said die.
Abstract
The invention relates to a method for forming slots in a section of a tube of rectangular section comprising inserting a die into the tube, the die having a width less than that of the tube and having a recess open on three faces extending across the die, a punch with a rectangular perforating portion perforating the tube and aligned with the recess to punch out a blank of material, which blank splits into two halves which curl away from the recess and remain secured to the tube.
Description
United States Patent [1 1 Hudson July 24, 1973 METHOD OF PERFORATING TUBES Leslie Gordon Hudson, Little Capped Hall, Epping, Essex, England Filed: Aug. 27, 1971 Appl. No.2 173,513 v inventor:
[30] Foreign Application Priority Data Aug. 20, 1970 Great Britain 40,393/70 US. Cl 83/30, 83/54, 83/188, 83/636, 83/685 Int. Cl .Q 826d 3/00 Field of Search 83/30, 54, 636, 685, 83/688, 689, 694, 188, 192-195 References Cited UNITED STATES PATENTS 1/1957 Koster 83/[88 X 2,572,137 10/1951 Grieder 83/54 X 3,145,462 8/1964 Bognar 83/694 X 1,161,705 11/1915 Lloyd 83/694 X Primary Examiner.l. M. Meister AttorneyWoodhams, Blanchard & Flynn 2 Claims, 3 Drawing Figures METHOD OF PERFORATING TUBES The invention relates to a method for perforating slots in a tubular member of rectangular section, for example. In particular the method of the invention is used in forming horizontal slots in one surface of the member at spaced-apart locations. Such perforated tubular members may then be used to accommodate brackets or other fittings which support shelves or drawers.
Slots have been formed in tubular members by milling, but this is a time-consuming operation. The problem of forming slots in a surface of a tubular member by using a punch and die of the same shape and size as the slot to be formed has to be overcome. The problem of forming slots with a punch and die is that the residual blank of material punched out of the surface of the tubular member cannot be removed easily from the die as the die is enclosed within the tubular member during the perforating step. Furthermore, any irregularities in the inside dimensions of the tubular member, and in addition the clearance necessary between the die and the inner surfaces of the tubular member to enable the tubular member to be moved along the length of the die, prevents accurate location of the die laterally under the punch during the perforating step.
According to the invention there is provided a method of forming slots in tubular members, comprising the steps of sliding a tubular member in which the slots are to be formed onto a die located in a determined position, which die has a lateral width less than that of the slot to be formed, an open-ended recess in the die extending across die, the open-ended recess being positioned adjacent the position at which the slot is to be formed in the tubular member, perforating the surface of the member with a blow from a punch, so that the blank of material is split substantially into two halves and maintaining the halves of the blank secured to the inner surface of the tubular member at the sides of the lateral extremity of the slot and turned away from the recess in the die so that a clean slot is obtained in the tubular member with no loose swarf in the die.
The method of the invention therefore prevents the blank of material punched out of the surface of the material when forming the slot in the surface of the tubular member from remaining in the recess in the die by splitting the blank substantially into two halves, and a1 lows the ends of the two halves to remain attached to the tubular member in such a way that there is no residual or loose blank of punched-out material in the die, and thus relative longitudinal movement between the tubular member and the die is not prevented. Moreover, as the die is of less lateral extent than the slot to be formed, and since the recess in the die is open on three faces, the necessity for accurate lateral location of the die inside the tubular member is obviated.
Preferably, the die may be secured to the machine on which the punch is mounted by means ofa connecting bar which passes through'the tubular member and is connected at one end to the die.
One embodiment of the invention is diagrammatically illustrated, by way of example, in the accompanying drawings, in which:
FIG. I shows the relative positions of a punch and die, in perspective, during perforation of a surface of a tubular member of rectangular section (not shown) to provide a slot;
FIG. 2 shows an end elevation of the rectangular tu.- bular member after perforation; and
FIG. 3 shows a perspective view of a perforated tube having a series of horizontal slots formed therein.
Refer-ring to the drawings, the apparatus for perforating a tubular metal member is shown in FIGS. 1 and 2 and comprises a punch 1 having a shank portion 2 which is flat and has a cross-section corresponding to that of the slot to be formed and terminates at the perforating end in a double taper so that it forms a triangular apex or point, and a die 4 having recess 5 which is open on the three faces as shown in FIG. 1.
The lateral width of the die 4, and thus of the recess 5, is less than the width of the slot to be formed in a surface of a tubular member 6. The width of the slot to be formed is determined by the lateral width of the punch 1, which is thus wider than the width of the die. I have found that a die inch wide is suitable to form a slot /6 inch wide. It will be understood that the width of the die should be sufficient to support the surface of the member in order to obviate denting of the surface during perforation, but must be narrow enough to allow withdrawal of the die longitudinally of the member 6.
In use to form a slot in the tubular member 6, the die 4 is placedin the member 6 so that the surface 7 of the die abuts the underside 8 of the surface of the member 6, which is thus supported by the die. The die is held in position so that its upper surface engages the underside 8, and is secured to the machine on which the punch is mounted by a bar passing longitudinally through the tubular member. The punch and die are thus mounted in the same vertical plane, the punch being aligned with the recess. The punch is then brought down sharply in a position aligned with the open recess 5 in the die. A slot 9 is thus formed in the surface of the tubular member. A blank of material punched from the surface of the tubular member is cut by the shearing action of the punch into substantially two halves, which are forced downwardly into the recess 5. As the recess 5 has no side walls, the two halves of the blank are pushed apart by the punch and curl away from the slot 9 towards the underside 8 of the surface, and remain attached to the tubular member at roots 10 and 10.
The member 6 is then drawn longitudinally of the die without hindrance while the die is held stationary by the bar passing through the tube and the punching operation is repeated at another predetermined position along the length of the tube. A tube having a plurality of perforations is shown in FIG. 3.
It will be appreciated that a plurality of slots may be formed simultaneously by providing a die with the required number of recesses or slots, and a corresponding number of punches mounted in a hammer (not shown). The punches would each be aligned with one recess in the die.
The invention thus provides a method of perforating tubular metal members in which the die is not clogged with loose swarf or blanks of metal.
I claim:
1. A method of forming a slot in a tubular member, comprising the steps of sliding a tubular member in which the slots are to be formed onto a die located in a determined position, said die having a lateral width less than that of the slot to be formed, an open-ended recess in the said die extending across said die, said open-ended recess being positioned adjacent the posisaid tubular member with no loose swarf in said die.
2. A method according to claim 1, wherein said die is secured to the machine on which said punch is mounted by means of a connecting bar which passes through said tubular member and is connected at one end to said die.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 747 450 Dated July 24, 1973 Inventor) Leslie Gordon Hudson It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
On the Title page, in the line designated [22] after "Filed:", thefiling date of the Application is incorrectly listed as "Aug. 27, 1971", this should be deleted and replaced by the proper filing date of --Aug. 20, l97l.
Signed and sealed this 12th day of February 1974.
(SEAL) Attest: I EDWARD M. FLET( I-HER,JR. a MARSHALL N Attesting ommissionerv of Patents FORM PC4050 (10-59) USCOMM-DC 60376-P69 I Q U.S. GOVERNHENT PRINTING OFFICE: I," O3G-3Sl
Claims (2)
1. A method of forming a slot in a tubular member, comprising the steps of sliding a tubular member in which the slots are to be formed onto a die located in a determined position, said die having a lateral width less than that of the slot to be formed, an open-ended recess in the said die extending across said die, said open-ended recess being positioned adjacent the position at which said slot is to be formed in said tubular member, perforating the surface of said member with a blow from a punch, whereby a punched-ouT blank of material is split substantially into two halves, and maintaining said halves of said blank secured to the inner surface of said tubular member at the sides of the lateral extremity of said slot and turned away from said recess in said die, whereby a clean slot is obtained in said tubular member with no loose swarf in said die.
2. A method according to claim 1, wherein said die is secured to the machine on which said punch is mounted by means of a connecting bar which passes through said tubular member and is connected at one end to said die.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4039370 | 1970-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3747450A true US3747450A (en) | 1973-07-24 |
Family
ID=10414682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00173513A Expired - Lifetime US3747450A (en) | 1970-08-20 | 1971-08-27 | Method of perforating tubes |
Country Status (12)
Country | Link |
---|---|
US (1) | US3747450A (en) |
AU (1) | AU447289B2 (en) |
BE (1) | BE771606A (en) |
BR (1) | BR7105461D0 (en) |
CA (1) | CA931499A (en) |
CH (1) | CH533503A (en) |
DE (1) | DE2141767C2 (en) |
FR (1) | FR2103426B1 (en) |
GB (1) | GB1329095A (en) |
NL (1) | NL157523B (en) |
SE (1) | SE366670B (en) |
ZA (1) | ZA715563B (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4020544A (en) * | 1974-07-23 | 1977-05-03 | Smith Edward A | Method of forming and locating molding clip registers in a metal door frame |
US4598950A (en) * | 1983-03-01 | 1986-07-08 | Cycles Peugeot | Tubular reinforcement in particular for a motor vehicle seat |
US4744276A (en) * | 1986-06-18 | 1988-05-17 | Stockrail Services Limited | Method and apparatus for producing punched tube |
WO1989002290A1 (en) * | 1987-09-17 | 1989-03-23 | Neurodynamics, Inc. | Angled hole ventricular catheter |
US4970926A (en) * | 1987-09-17 | 1990-11-20 | Neurodynamics, Inc. | Apparatus for making angled hole ventricular catheter |
US5517744A (en) * | 1994-11-04 | 1996-05-21 | Cosco, Inc. | Press-fit tube-connection system |
WO1998055244A1 (en) * | 1997-06-05 | 1998-12-10 | Pm Teknik Handelsbolag | A method for punching and a punch die |
US5967012A (en) * | 1996-11-19 | 1999-10-19 | The United States Of America As Represented By The Secretary Of The Navy | Waste aerosol container processor |
US20080060199A1 (en) * | 2006-07-25 | 2008-03-13 | Christopher Alfred Fuller | Method of manufacturing a manifold |
US8162046B2 (en) | 2010-08-17 | 2012-04-24 | T-3 Property Holdings, Inc. | Blowout preventer with shearing blades |
CN104001831A (en) * | 2013-02-25 | 2014-08-27 | 业纳自动化技术有限公司 | Method of and device for the disposal of a slug that is formed during the process of perforating a hollow profile |
US20160101475A1 (en) * | 2013-05-18 | 2016-04-14 | Ulrich Bruhnke | Method and apparatus for separating hollow sections |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3044028A1 (en) * | 1980-01-22 | 1981-09-03 | VEB Transportgerätebau Büro für Neuerer, DDR 4901 Döschwitz-Hollsteitz | METHOD AND DEVICE FOR PUNCHING LONG HOLES IN STEEL TUBES |
DE9311482U1 (en) * | 1993-08-02 | 1993-10-14 | Komeg Somac Sondermaschinenbau | Device for removing liquids in hoses on motor vehicles |
FR2762242B1 (en) * | 1997-04-16 | 1999-07-16 | Cesa | PUNCH FOR FORMING A HOLE IN A METAL WALL |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1161705A (en) * | 1913-05-12 | 1915-11-23 | Elyria Iron & Steel Company | Mechanism for cutting tubing and the like into lengths. |
US2572137A (en) * | 1949-05-11 | 1951-10-23 | Grieder Fred | Tube severing machine |
US2786003A (en) * | 1954-01-11 | 1957-03-19 | Gen Motors Corp | Nitriding of chromium steel |
US3145462A (en) * | 1961-05-01 | 1964-08-25 | Yoder Co | Method of severing tubes and reforming deformed portion caused by severing action |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1469A (en) * | ||||
DE6C (en) * | 1877-07-03 | H. PALITZSCH zu Chemnitz | Shunting brake | |
US2653664A (en) * | 1951-06-27 | 1953-09-29 | Configured Tube Products Compa | Method of and means for forming an elongated opening in a pipe or the like |
US2865451A (en) * | 1956-06-05 | 1958-12-23 | Harold D Ihrig | Means and method of sewing sheet metal |
FR2032067A5 (en) * | 1969-02-18 | 1970-11-20 | Feralco Sa |
-
1970
- 1970-08-21 GB GB4039370A patent/GB1329095A/en not_active Expired
-
1971
- 1971-08-18 AU AU32510/71A patent/AU447289B2/en not_active Expired
- 1971-08-19 ZA ZA715563A patent/ZA715563B/en unknown
- 1971-08-19 FR FR7130293A patent/FR2103426B1/fr not_active Expired
- 1971-08-19 SE SE10543/71A patent/SE366670B/xx unknown
- 1971-08-19 NL NL7111413.A patent/NL157523B/en unknown
- 1971-08-19 CA CA120947A patent/CA931499A/en not_active Expired
- 1971-08-19 CH CH1222871A patent/CH533503A/en not_active IP Right Cessation
- 1971-08-20 BR BR5461/71A patent/BR7105461D0/en unknown
- 1971-08-20 DE DE2141767A patent/DE2141767C2/en not_active Expired
- 1971-08-20 BE BE771606A patent/BE771606A/en unknown
- 1971-08-27 US US00173513A patent/US3747450A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1161705A (en) * | 1913-05-12 | 1915-11-23 | Elyria Iron & Steel Company | Mechanism for cutting tubing and the like into lengths. |
US2572137A (en) * | 1949-05-11 | 1951-10-23 | Grieder Fred | Tube severing machine |
US2786003A (en) * | 1954-01-11 | 1957-03-19 | Gen Motors Corp | Nitriding of chromium steel |
US3145462A (en) * | 1961-05-01 | 1964-08-25 | Yoder Co | Method of severing tubes and reforming deformed portion caused by severing action |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4020544A (en) * | 1974-07-23 | 1977-05-03 | Smith Edward A | Method of forming and locating molding clip registers in a metal door frame |
US4598950A (en) * | 1983-03-01 | 1986-07-08 | Cycles Peugeot | Tubular reinforcement in particular for a motor vehicle seat |
US4744276A (en) * | 1986-06-18 | 1988-05-17 | Stockrail Services Limited | Method and apparatus for producing punched tube |
WO1989002290A1 (en) * | 1987-09-17 | 1989-03-23 | Neurodynamics, Inc. | Angled hole ventricular catheter |
US4970926A (en) * | 1987-09-17 | 1990-11-20 | Neurodynamics, Inc. | Apparatus for making angled hole ventricular catheter |
US5517744A (en) * | 1994-11-04 | 1996-05-21 | Cosco, Inc. | Press-fit tube-connection system |
US5967012A (en) * | 1996-11-19 | 1999-10-19 | The United States Of America As Represented By The Secretary Of The Navy | Waste aerosol container processor |
WO1998055244A1 (en) * | 1997-06-05 | 1998-12-10 | Pm Teknik Handelsbolag | A method for punching and a punch die |
US20080060199A1 (en) * | 2006-07-25 | 2008-03-13 | Christopher Alfred Fuller | Method of manufacturing a manifold |
US8162046B2 (en) | 2010-08-17 | 2012-04-24 | T-3 Property Holdings, Inc. | Blowout preventer with shearing blades |
US8167031B2 (en) | 2010-08-17 | 2012-05-01 | T-3 Property Holdings, Inc. | Blowout preventer with shearing blades |
US8443880B1 (en) | 2010-08-17 | 2013-05-21 | T-3 Property Holdings, Inc. | Blowout preventer with shearing blades |
US8443879B2 (en) | 2010-08-17 | 2013-05-21 | T-3 Property Holdings, Inc. | Blowout preventer with shearing blades |
CN104001831A (en) * | 2013-02-25 | 2014-08-27 | 业纳自动化技术有限公司 | Method of and device for the disposal of a slug that is formed during the process of perforating a hollow profile |
US20160101475A1 (en) * | 2013-05-18 | 2016-04-14 | Ulrich Bruhnke | Method and apparatus for separating hollow sections |
US10035203B2 (en) * | 2013-05-18 | 2018-07-31 | Ulrich Bruhnke | Method and apparatus for separating hollow sections |
Also Published As
Publication number | Publication date |
---|---|
NL7111413A (en) | 1972-02-23 |
CA931499A (en) | 1973-08-07 |
BR7105461D0 (en) | 1973-05-15 |
AU447289B2 (en) | 1974-04-11 |
DE2141767A1 (en) | 1972-02-24 |
AU3251071A (en) | 1973-02-22 |
FR2103426B1 (en) | 1976-02-13 |
FR2103426A1 (en) | 1972-04-14 |
CH533503A (en) | 1973-02-28 |
SE366670B (en) | 1974-05-06 |
ZA715563B (en) | 1972-06-28 |
GB1329095A (en) | 1973-09-05 |
NL157523B (en) | 1978-08-15 |
BE771606A (en) | 1971-12-31 |
DE2141767C2 (en) | 1982-03-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3747450A (en) | Method of perforating tubes | |
DE19851091B4 (en) | Process for forming slotted and folded box blanks | |
US3055275A (en) | Method and device for striking out the waste or use from punched sheet workpieces | |
DE2235933A1 (en) | METHOD AND DEVICE FOR PRODUCING BEARINGS FROM A STRIP OF MATERIAL | |
DE2347281A1 (en) | METHOD AND DEVICE FOR DIVIDING UP FROZEN PLATES OF FOOD IN INDIVIDUAL SERVINGS | |
EP2086699A1 (en) | Method for obtaining workpiece cutouts from a plate-like workpiece | |
EP3299094A1 (en) | Method for manufacturing a workpiece and stamp handling tool for performing the method | |
PL172278B1 (en) | Method of and apparatus for manufacturing sheet metal components | |
DE102009045017A1 (en) | Device for processing plate-shaped workpiece, comprises a processing table on which the workpiece is arranged, a device for fixing the workpiece during processing, and a bar-shaped guiding device on which a processing unit is arranged | |
DE3212153A1 (en) | METHOD AND DEVICE FOR PERFORATING AND / OR CUTTING RUNNABLE HOLLOW BODIES | |
US1582052A (en) | Means for and method of forming slots in metallic members | |
US2076436A (en) | Machine and method for the marginal notching of paper sheets | |
US3913420A (en) | Method and means for making file teeth | |
US3813743A (en) | Method of expanding metal | |
US4441395A (en) | Tube punching method | |
US2858884A (en) | Blanking sheet material | |
DE19713098C5 (en) | Method and device for the removal on all sides of articles formed from a film web | |
DE102020115036A1 (en) | Welding device and method for welding an outlet element to a packaging material | |
DE2510430A1 (en) | PROCESS AND PRESS FOR FORMING ONE OR MORE ELEMENTS IN A SINGLE WORK | |
DE60141837D1 (en) | PUNCHING DEVICE, IN PARTICULAR FOR PUNCHING LABELS AND OTHER FOIL ELEMENTS | |
US1603265A (en) | Method and apparatus for cutting sheets | |
AT405146B (en) | PUNCHING TOOL FOR SHEET PARTS | |
AT400545B (en) | Method and punching apparatus for producing cutting lines with apertures | |
US1550999A (en) | Method of and apparatus for slitting and expanding strip iron | |
DE1752934C3 (en) | Process for the manufacture of radiator panels |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GRATNELL S LIMITED 256, CHURCH RD. LONDON, E10, 7J Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HUDSON, LESLIE G.;REEL/FRAME:004066/0608 Effective date: 19820629 |