US3850494A - Rotary press - Google Patents

Rotary press Download PDF

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Publication number
US3850494A
US3850494A US00415618A US41561873A US3850494A US 3850494 A US3850494 A US 3850494A US 00415618 A US00415618 A US 00415618A US 41561873 A US41561873 A US 41561873A US 3850494 A US3850494 A US 3850494A
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US
United States
Prior art keywords
tool
tools
wire
carrier
carriers
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Expired - Lifetime
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US00415618A
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English (en)
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H Nebendorf
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HILGELAND GEB
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HILGELAND GEB
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B21K1/466—Heading machines with an oscillating die block
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/06—Swaging presses; Upsetting presses

Definitions

  • the number of tools sets is un- [58] Field 184 190 even and a raw workpiece is fed to alternate ones of 72/72 10/1 R R the tool sets as the carriers rotate. Ejecting devices are 13 provided for the tool sets and alternate ones thereof are actuated during rotation of the tool carriers.
  • References Cited tools in the outer carrier are in radially inwardly opening pockets formed in the outer carrier while the tools UNITED STATES PATENTS on the inner carrier are mounted on support members 2.380,462 7/1945 Peters 72/405 which are radially reclprocable in the pockets while 2,872,887 2/1959 Praturlon 72/406 being circumferentiany shiftable on the inner Garden 3,239,912 3/1966 Baumgartner et al. 72/185 3,359,774 l2/l967 Bouchard et al. 72/339 12 Claims, 13 Drawing Figures ROTARY IPSS
  • the present invention relates to a press with rotating tool carriers. A press of this general character is described for instance in US. Pat. No.
  • Presses of this type permit the manufacture of work pieces at a considerably higher output per time unit than can be produced on presses with a reciprocating press carriage.
  • the heretofore known presses with rotating tool carriers had, however, the drawback that the construction with two rotating tool carriers is rather expensive inasmuch as one tool carrier was required for withdrawing and feeding the work piece to be machined and two additional work piece carriers were required with tools for the pressing operation.
  • Another disadvantage of heretofore known presses of this type is seen in the fact that a considerably great number of structural elements is necessary in order to realize a sufficient axiality of the tools during the pressing operation and the feeding movement for the work pieces to be machined.
  • the unfavorable holding of the work piece at the periphery of the rotating tool carriers was unsatisfactory in view of the considerable occurring centrifugal forces.
  • FIG. I diagrammatically illustrates a section taken along the line I I of FIG. 2 through a press according to the invention for carrying out a double pressing method.
  • FIG. 2 represents a section taken along the line II II of FIG. 1.
  • FIG. 3 illustrates a front view of the control means for controlling the movable tools in one or the other end position.
  • FIG. 4 shows a top view of the tools movable into two end positions, together with a locking device.
  • FIG. 5 is a front view of a feeding device for the wire sections and shows the device at the time of withdrawing a wire section from a magazine.
  • FIG. 6 shows the feeding device according to FIG. 4 in a position during the feeding movement.
  • FIG. 7 illustrates the feeding device of FIG. 5 at the time of a completed feeding movement.
  • FIG. 8 is a top view and partial section of the feeding device according to FIG. 6.
  • FIG. 9 is a side view of the press according to the invention with details of the drive.
  • FIG. 10 illustrates the feeding device of FIGS. 5 to 8 but on a larger scale than that of these figures and furthermore illustrates additional details in front view.
  • FIG. 11 shows a top view of the feeding device of FIG. 10.
  • FIG. l2 illustrates details of the press of FIG. 5 in side view and in section and on a larger scale than that of FIG. 1.
  • FIG. 213 represents an ejecting device preferably employed in a press according to FIG. I.
  • the machine body 1 of the press has tool carriers 2 and 3 rotatably journalled therein, preferably along a horizontal plane.
  • the tool carrier 2 rests through bushings 4 and 5 and laterally through the invention of a circular stip 6 in downward direction on the machine body 1.
  • the axis of rotation of the tool carrier 2, which extends perpendicular to the drawing plane of FIG. 1, extends through the point 7.
  • the tool carrier 3 is rotatably journalled on a core bolt 8 connected to the machine body 1.
  • the axis of rotation of the tool carrier 3 which extends parallel to the axis of rotation of the tool carrier 2 passes through point 9.
  • Connected to the circumference of the tool carrier 2 is a gear 10 which is drivingly connected to a pinion ll which is connected to a stationarily arranged motor 12 (FIGS. 2 and 9).
  • the tool carrier 2 is provided with pockets 13 the opposite sides of which extend parallel to each other.
  • the pockets 13 are in the direction toward the periphery of the tool carrier 2 closed by tools 14 which are nonmovably arranged in said pockets 13.
  • the pockets 13 extend approximately in radial direction while the angular distance of successive pockets is constant.
  • Carrier plates 15 are longitudinally (radially) displaceably guided in the pockets l3 and have tools 16 transversely (tangentially) displaceably mounted on said carrier plates 15.
  • the carrier plates T5 are likewise displaceably (tangentially) mounted on the tool carrier 3 and more specifically on guiding surfaces 17 provided therefor.
  • the above mentioned terms radial and tangential refer to the axis of rotation of the tool carrier 2.
  • This feeding device comprises primarily a feeding lever 18 which on a feeding bearing lg connected to the tool carrier 2 is rotatably journalled for rotation about a shaft 20.
  • a multi-arm ejector 23 which is rotatable about an axis of rotation that is parallel to the axes of rotation of the tool carriers 2 and 3.
  • the ejector 23 has arms 24 which when in operation pass successively into the direction of movement of the ejector pins within a recess 25 of annular shape which is provided in the machine body 1.
  • FIG. 2 shows the press of FIG. I in side view and in section on a larger scale than that of FIG. I.
  • the tool carrier 3 which is rotatable about the core bolt 8 rests with regard to forces extending horizontally and in the pressing direction, through the intervention of a bushing 26 on the core bolt 8 which is stationarily arranged in the machine body 11.
  • the work tool carrier 3 rests on a strip 27 connected to the machine body 1 or on the machine cover 28.
  • the guiding surfaces 17 on the tool carrier 3 are toward the top closed by guiding strips 29.
  • Each of the guiding strips 29 has an extension 30 which, similar to an extension 31 provided at the lower end of the guiding surfaces 117, catches behind the carrier plate 15 for the tools 16 at the upper and lower ends respectively.
  • the carrier plates 15 are with reference to FIG. 2 displaceable perpendicularly with regard to the drawing plane and are mounted on the tool carrier 3.
  • the tools K6 are by means of screw bolts 32 and 33 connected to a tool holding plate 34.
  • the plate 34 rests in horizontal direction and with regard to FIG. 2 parallel to the drawing plane, in other words, in the direction toward the core bolt 8, on the carrier plate 15.
  • the tool holding plate 34 is displaceably arranged relative to the carrier plate 15 and on the latter.
  • a coulisse 36 in which a coulisse block 37 is guided (see also FIG. 3).
  • the block 37 is rotatably mounted on a stub shaft which is located on the pivot lever 39 of a pivoting device 40.
  • the pivoting device 40 furthermore comprises a bearing 41 which is connecting to the tool carrier 3 and in which a toothed wheel 43 is rotatably journalled, said wheel 43 being nonrotatably connected to the pivot lever 39 through the intervention of a shaft 42.
  • the toothed wheels 43 associated with the tools 16 are adapted during the operation of the press, successively to move into the range of a toothed member 44 provided on the machine body 1.
  • the upper part 45 of the member 44 is resiliently, yieldably mounted relative to the lower part 46 in the direction of movement of the tools 16 and shaft 22 of the pivot wheel 43.
  • two alternately effective tools for instance punches 47 and 48 for the tools 16 which are mounted on the tool carrier 3.
  • Each wheel 43 rotates 180 in rolling over member 44 to shift the respective plate 34 between a pair of end positions with a respective tool carried thereby being in operative position in each end position of the plate.
  • a spring loaded locking wedge 49 which is mounted in the carrier plate 15 and the wedge surfaces of which alternately engage one or the other of the two inclined surfaces 50 and 51 which are provided on the tool holding plate 34.
  • a control cam 52 which, due to the relative movement between carrier plate 15 and tool carrier 3 as it occurs during the rotation of the tools, brings about a control of an ejector pin which is provided in the punch 47 or 48.
  • the feeding levers 18 which are rotatably journalled on feeder bearings for rotation about shafts have an exchangeable fitting member 53 for adapting the feeding device to the respective shape of the raw work pieces or the diameter of the wire sections.
  • the fitting member 53 is at that end thereof which faces away from the shaft 20 equipped with a finger-shaped extension 54 which together with an adjacent part of the fitting member 53 forms a fork-shaped recess which with the specific embodiment of the invention is adapted to the diameter as to the width of the wire sections to be withdrawn and to be moved in front of the tools.
  • clamping bolt 56 On that side of the recess 55 which is located opposite the finger-shaped extension 54, there is located in the fitting member 53 a clamping bolt 56 which is displaceable in a direction transverse to the direction of withdrawal of the wire sections.
  • Clamping bolt 56 has one rounded or inclined end extending into the region of the recess 55 whereas the other end of bolt 56 is under the influence of a pressure spring 57 connected to the fitting member 53.
  • Non-rotatably connected to shaft 20 of the feeding device is in addition to the feeding lever 18 a control lever 58 with a control roller 59. That end of the feed ing lever 18 which faces away from the fitting member 53 engages a bushing 60 which is axially displaccably arranged in the tool carrier 2.
  • the bushing 60 is under the influence of a pressure spring 61.
  • the control roller 59 which is rotatably journalled for rotation about a shaft 62 connected to control lever 58, rolls on a control cam 63 which is connected to the machine cover 28 (see FIGS. 2 and 12).
  • a locking strip 64 Connected to the tool holding plate 34 is a locking strip 64 which in one of the two end positions of the plate 34 is controlled below the control lever 58 in such a way that a movement of the feeding lever 18 in the direction to the pertaining tool 14 is prevented.
  • a magazine 21 for the wire sections to be withdrawn is located on the machine body 1.
  • the magazine 21 is formed by the shearing blade 66 of a shearing device 67 in cooperation with a counter holder 68 which is resiliently, yieldably mounted within the region of the shearing matrix in the withdrawing device of the wire section and in the direction of the shearing blade.
  • the counter holder 68 is adapted to be pivoted out of the direction of movement of the wire sections to be withdrawn from the magazine.
  • the mounting place of the counted holder 68 is not illustrated and with regard to FIGS. 5, 6 and 10 is located below the shearing matrix 69.
  • the shearing blade 66 is connected to a shaft 70 which is movable upwardly and downwardly along a straight line in the machine body 1 and which is operatively connected to a non-illustrated driving device preferably in the form of a double cam drive.
  • This driving device is so designed that the shearing blade 66 after having sheared off a wire section 65 and after it has moved the same to withdrawing position, is for a certain period of time non-movably held in a position which in the drawing represents the lower position.
  • the counter holders 68 will engage the rear portion (with regard to the withdrawing direction) of the wire section 65 and thus will prevent a dropping out of the wire section 65 from the recess 71 provided in the shearing blade 66.
  • the recess 71 is limited by a finger-shaped extension 73 which is located opposite the shearing edge '72.
  • the driving device for the shearing blade 66 is furthermore for the present case of the double pressure method designed in such a way that the shearing blade will be moved to the above mentioned lower position only for every other successive tool which is moved past the shearing blade while an uneven number of said tools is provided.
  • a wire abutment 74 provided on the machine body 1 which comprises primarily a wire abutment shaft 75 with a wire abutment lever 76 axially adjustably mounted on said shaft 75.
  • the invention furthermore provides a non-illustrated wire drawing device which may be of any standard type and which feeds the wire for the wire sections to be sheared off rhythmically in conformity with the withdrawal by the feeding devices through the shearing matrix 69 against the wire abutment lever 76.
  • FIG. 13 shows the ejector 23 with arms 24 which is connected to a rotating shaft 77, at a time period at which one of the anns 24 drives an ejector pin 22 provided in a tool 14 in its ejecting direction.
  • the tools already set or adjusted outside the press are preferably by means of a specific device inserted into the press.
  • an individual adjustment of the tools is provided. Since, however, these details do not form a part of the invention, they are not described.
  • a later adjustment of the tools already in the press can be effected through the opening 78 in the machine cover.
  • a bore 79 which is located in the plane of the ejector pins 22 and through which an adjustment of the length of the shanks for the bolts to be pressed or the like can be effected.
  • the tools 14 and 16 are closest to each other in the position which above has been designated as pressing position. It may now be assumed that with the above mentioned tool pair 14, 16 there has just been carried out the finish-pressing with the press designed as double pressure press. The finishpressing is consequently effected by means of the punch 48 of tool 16. Due to the continuous rotation of the tool carriers 2 and 3, it will be appreciated that after effected finishpressing a longitudinal displacement of the tool 16 in pocket 13 relative to the tool 14 fixedly arranged in pocket 13 is efiected in such a way that the tool 16 moves away from tool 14.
  • the coulisse 44 which is mounted on the machine body 1 will in cooperation with the pivoting device arranged on the carrier plate 15 bring about a reversal of the tool 16 and punches 47 and 48 to the end position which is opposite to the process of the finish-pressing.
  • An ejector pin which may possibly be provided in the punch 48 carrying out the operation of the finish-pressing is, due to the above described relative movement or transverse displacement of the carrier plate 15 relative to the guiding surface 17 of tool carrier 3, controlled by means of an ejector pin which is resiliently mounted in the carrier plate 15. That end of this ejector pin which faces away from the punches 47, 48 is adapted to slide on the control cam 52 which is connected in the guiding surface 17.
  • the feeding lever 18 for 76 By means of the control cam 63 which is connected below the machine cover 28, the feeding lever 18 for 76.
  • the shearing off of the wire section 65 and the subsequent downward movement of shaft with the shearing blade 66 is controlled in such a way that the feeding lever of the tool pair which precedes the tool pair 14, 16 involved can in spite of the control to the withdrawing position move below the wire section or the shearing device in an umimpeded manner.
  • the tools 14 and 16 are farthest away from each other.
  • the feeding lever 18 which has been controlled so as to occupy its withdrawing position withdraws a wire section 65 from the recess 71 in the shearing blade 66, while the shearing blade 66 occupies its lower end position which is the position close to the feeding device.
  • the shearing blade 66 occupies its lower end position which is the position close to the feeding device.
  • the wire section 65 will in this connection be transported in the direction of the opening of the recess 71 in the shearing blade 66 against the counter force exerted. by the counter holder 68 upon the wire section 65.
  • the counter holder 68 serves for preventing dropping out of the recess 71 of the shearing blade 66 and is resiliently, yieldably mounted in the direction of movement of the shearing blade 66 during the shearing off process and also transverse thereto in the direction of movement of the feeding lever or levers 18 in order to permit an escape of the counter holder 68 c luring the withdrawal of the wire section 65.
  • the raw work piece or wire section 65 in the tool 14 is prepressed by means of the punch 47 of the tool 16.
  • the tool 16 and punches 4'7 and 48 move further away from the tool 14 while an ejector pin which may be provided in the punch 47 will in the same manner be actuated as described above in connection with punch 48.
  • the feeding device After a further rotation of the tool carriers 2 and 3, the feeding device again reaches the tool pairs 14, 16 here involved and comes into the region of the shearing device 67. As descrived in connection with the preceding tool pair, the feeding lever 18 moves below the shearing device 67 in an unimpeded manner because the latter is controlled in such a way that at this time period the shearing blade 66 will occupy its upper end position whereas simultaneously wire is pulled against the wire abutment lever 76.
  • the tools 14 and 16 again occupy the pressing position while this time the punch 48 occupies a po sition opposite the tool 14 for purposes of finishpressing the raw work piece or wire section.
  • the ejector pin 22 in tool 14 is after a further rotation of the tool carriers 2 and 3 turned by 120 by the arm 24 of a correspondingly adjusted rotating multiarm ejector 23 so that the finish-pressed work piece will be ejected out of the tool 14.
  • a simple and effective construction of the press for ejecting finish-pressed work pieces from the tools of the outer tool carriers is realized by the fact that the tools 14 in the tool carrier 2 have ejector pins 22 of which those ends which face away from the tools are moved through the region of action of the ejector 23 which rotates synchronously with the tool carrier 2 and has an axis of rotation which is parallel to the axis of rotation of the tool carrier.
  • the tools 16 of the tool carrier 3 are equipped with ejector pins 22, which, in view of the relative movements between the tools 16 or the carrier plates thereof and tool carrier 3 are adapted to enter into driving connection with the control means connected to the tool carrier, a simple way of controlling the ejector pins in the tools of the inner tool carrier is obtained.
  • the arrangement according to the invention in which for controlling of the feeding lever 18 control cam 63 connected to the machine cover 28 is employed, has the advantage that due to the feeding movement brought about by the spring, no destroying danger exists if the tool moves out. On the other hand, the correct return time of the feeding device is assured by a positive returning of the feeding device by means of a control cam.
  • control means arranged on a predetermined point for controlling the tools to move into one or the other position are resiliently, yieldably mounted, the impacting or moving of the control means associated with the tool carrier to said first mentioned control means causes only a minimum of wear and a minimum of noise.
  • first and second tool carriers rotatable in unison on respective ones of spaced parallel axes, said first tool carrier surrounding said second tool carrier, radially inwardly opening pockets in said first tool carrier, support members connected to said second tool carrier for rotation therewith and each radially reciprocable in a respective said pocket, a tool set pertaining to each pocket comprising a first tool on said first tool carrier stationary in the pocket and second and third tools moveably mounted on each support member, means for moving said second and third tools into operative relation with the respective said first tool alternately on successive revolutions of said tool carriers, and feed means for feeding workpieces to said tool sets on alternate revolutions of said tool carriers.
  • said feed means includes a magazine for untreated workpieces and a feed device on said first tool carrier for each pocket operable to withdraw untreated workpieces from said magazine and present the untreated workpieces to working position in respect of the pertaining tool set.
  • a press according to claim 1 which includes ejector means associated with the said first tool, an ejector actuator adjacent said first tool carrier, and means for operating said ejector actuator so as to actuate each said ejector means on alternate revolutions of said first tool carrier.
  • a press according to claim 4 in which said support members are moveably connected to said second tool carrier so as to be shiftable circumferentially thereon as said tool carriers rotate whereby said support members remain in said pockets, and cam means on said second tool carrier for operating said ejectors in response to said shifting of said support members thereon.
  • said feed means comprises a wire magazine and means for feeding wire therefrom and for cutting off the fed wire, a feed device for each first tool engageable with a cut-off wire and operable to convey the cut-off wire to working position, and support means for supporting the wire prior to conveying thereof away from cut-off position, said support means being yieldable and also being moveable out of the path of wire being fed from the magazine.
  • a press according to claim 1 in which said second and third tools being mounted on a single plate, and ac tuating means adjacent said second tool carrier for actuating said plate for moving said second and third tools into operative relation to the respective first tool alternately on successive revolutions of said tool carriers, and detent means to hold each plate in each actuated position thereof.
  • each actuating means comprises a toothed wheel, a block in a radially displaced position on the wheel, a slot in the plate perpendicular to the direction of movement of the plate, and stationarily mounted tooth means engageable with each wheel during revolution of said second tool carrier and operable to rotate said wheel one-half revolution for each revolution of said second tool carner.
  • a press according to claim 1 in which there is an uneven number of the said tool sets, said feed means feeding workpieces to alternate ones of said tool sets during rotation of said tool carriers, said feed means including a feed lever on said first tool carrier for each tool set, and means operable in unison with the movement of said second and third tools between operative and inoperative relation with the respective first tool for locking the feed lever pertaining to each tool set against feeding movement when a predetermined one of the pertaining second and third tools is in operative position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Forging (AREA)
  • Details Of Cutting Devices (AREA)
US00415618A 1972-11-30 1973-11-14 Rotary press Expired - Lifetime US3850494A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722258647 DE2258647A1 (de) 1972-11-30 1972-11-30 Presse mit zwei um die eine bzw. andere von zwei parallelen drehachsen synchron rotierenden werkzeugtraegern

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US3850494A true US3850494A (en) 1974-11-26

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US00415618A Expired - Lifetime US3850494A (en) 1972-11-30 1973-11-14 Rotary press

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US (1) US3850494A (cs)
JP (1) JPS4995849A (cs)
BR (1) BR7309443D0 (cs)
DE (1) DE2258647A1 (cs)
FR (1) FR2208736B1 (cs)
GB (1) GB1455447A (cs)
IT (1) IT1000918B (cs)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208899A (en) * 1976-11-22 1980-06-24 Gebr. Hilgeland Press for producing machine elements, especially balls, rivets and the like
US5842267A (en) * 1994-12-30 1998-12-01 Black & Decker, Inc. Method and apparatus for forming parts of a predetermined shape from a continuous stock material
US6290439B1 (en) 1994-12-30 2001-09-18 Black & Decker, Inc. Method and apparatus for forming parts from a continuous stock material and associated forge
US11705680B2 (en) 2020-05-27 2023-07-18 Drew Syingshun Liu Wall-mounted electrical-connector-engaging assembly with quick installation features

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339677C2 (de) * 1983-11-02 1986-02-13 GTA GmbH Fertigungsbetrieb und Ingenieurbüro für Grubenbedarf, Transport- und Ausbautechnik, 4236 Hamminkeln Ausbausetzeinrichtung im Zusammenwirken mit einer Teilschnittmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380462A (en) * 1942-05-21 1945-07-31 American Can Co Can body necking-in machine
US2872887A (en) * 1953-03-06 1959-02-10 Praturlon Joseph Rotary press comprising a plurality of tool groups
US3239912A (en) * 1962-01-15 1966-03-15 Bennett American Corp Continuous forging method
US3359774A (en) * 1965-03-24 1967-12-26 Rota Forg Corp Rotary forging machine or the like
US3448601A (en) * 1967-07-26 1969-06-10 Lawrence D Holum Rotary forging apparatus
US3453856A (en) * 1967-08-16 1969-07-08 Black Clawson Co Forging apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE417273A (cs) *

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380462A (en) * 1942-05-21 1945-07-31 American Can Co Can body necking-in machine
US2872887A (en) * 1953-03-06 1959-02-10 Praturlon Joseph Rotary press comprising a plurality of tool groups
US3239912A (en) * 1962-01-15 1966-03-15 Bennett American Corp Continuous forging method
US3359774A (en) * 1965-03-24 1967-12-26 Rota Forg Corp Rotary forging machine or the like
US3448601A (en) * 1967-07-26 1969-06-10 Lawrence D Holum Rotary forging apparatus
US3453856A (en) * 1967-08-16 1969-07-08 Black Clawson Co Forging apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208899A (en) * 1976-11-22 1980-06-24 Gebr. Hilgeland Press for producing machine elements, especially balls, rivets and the like
US5842267A (en) * 1994-12-30 1998-12-01 Black & Decker, Inc. Method and apparatus for forming parts of a predetermined shape from a continuous stock material
US6290439B1 (en) 1994-12-30 2001-09-18 Black & Decker, Inc. Method and apparatus for forming parts from a continuous stock material and associated forge
US6739171B2 (en) 1994-12-30 2004-05-25 Black & Decker, Inc. Method and apparatus for forming parts from a continuous stock material and associated forge
US20040194528A1 (en) * 1994-12-30 2004-10-07 Black & Decker, Inc. Method and apparatus for forming parts from a continuous stock material and associated forge
US7127923B2 (en) 1994-12-30 2006-10-31 Black & Decker, Inc. Method and apparatus for forming parts from a continuous stock material and associated forge
US11705680B2 (en) 2020-05-27 2023-07-18 Drew Syingshun Liu Wall-mounted electrical-connector-engaging assembly with quick installation features

Also Published As

Publication number Publication date
JPS4995849A (cs) 1974-09-11
FR2208736A1 (cs) 1974-06-28
BR7309443D0 (pt) 1974-08-29
DE2258647A1 (de) 1974-06-20
GB1455447A (en) 1976-11-10
FR2208736B1 (cs) 1978-09-08
IT1000918B (it) 1976-04-10

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