EP0290260A2 - Handwerkszeug - Google Patents

Handwerkszeug Download PDF

Info

Publication number
EP0290260A2
EP0290260A2 EP88304086A EP88304086A EP0290260A2 EP 0290260 A2 EP0290260 A2 EP 0290260A2 EP 88304086 A EP88304086 A EP 88304086A EP 88304086 A EP88304086 A EP 88304086A EP 0290260 A2 EP0290260 A2 EP 0290260A2
Authority
EP
European Patent Office
Prior art keywords
tool
lever
levers
knob
internal
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.)
Granted
Application number
EP88304086A
Other languages
English (en)
French (fr)
Other versions
EP0290260A3 (en
EP0290260B1 (de
Inventor
James Jeromson Jr.
J. Edward C. Anderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stride Tool Inc
Original Assignee
Milbar Corp
Stride Tool Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Milbar Corp, Stride Tool Inc filed Critical Milbar Corp
Publication of EP0290260A2 publication Critical patent/EP0290260A2/de
Publication of EP0290260A3 publication Critical patent/EP0290260A3/en
Application granted granted Critical
Publication of EP0290260B1 publication Critical patent/EP0290260B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/20—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same inserting or withdrawing split pins or circlips
    • B25B27/205—Pliers or tweezer type tools with tow actuated jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/06—Joints
    • B25B7/10—Joints with adjustable fulcrum

Definitions

  • This invention relates to a hand tool of the type used for expansion and/or contraction of differing types of deformable members.
  • Snap or retaining rings are either "internal” or “external”.
  • the internal type of retaining ring is used to retain elements such as bearings or shafts, within a bore. In order to install the ring it is contracted to allow it to pass into the bore, and then allowed to expand for engagement with an internal groove formed around the bore.
  • the external type of retaining ring is used to retain elements such as bearings, gears or pulleys on shafts.
  • An external ring normally engages an annular groove formed in a shaft to inhibit axial movement of an element mounted on the shaft.
  • An external ring is generally installed by expanding the ring until its internal diameter is greater than the shaft diameter.
  • a tool for installing and removing external rings for example, must expand the rings to increase its internal diameter in order to accommodate the shaft.
  • An internal ring installation and removal tool must contract the ring in order to decrease its external diameter to enable the ring to pass through a bore. Since the function and performance required of such tools is so substantially different, retaining ring pliers are often supplied as single purpose “internal” and "external” tools. These single purpose pliers are intended for use only in installing or removing one type of retaining ring, and both types of pliers are therefore required in order to install or remove both external and internal types of retaining rings.
  • the tool includes a pair of pivotally interconnected handles and a pair of jaw members coupled to the handles by a latching mechanism having two transversely slidable latch members. In one position, the latch members are positioned to allow one handle member to be coupled to one jaw member and the other handle to be coupled to the other jaw member. Upon transversely sliding the latch members to a second position, the one handle is coupled to the other jaw member and the other handle is coupled to the one jaw member. While the construction of the referenced patent has enjoyed great success, it is relatively complex and it contains numerous parts which must be properly assembled and aligned during operation to provide proper functioning.
  • a plier is provided whereby separate pairs of jaws and handles are pivotally interconnected about a common axis and are arranged such that a pair of movable pins is adapted to alternately engage the jaw and handle pairs to shift the jaw and handle interconnections from an internal position to an external position and visa versa.
  • An additional form of plier construction provides interconnected levers having two jaw members for simul­ taneous operation of the tool on internal and external retaining rings by a pair of jaws positioned for internal operation and a pair of jaws for external operation.
  • Another convertible plier construction utilizes linkages that must be disengaged and the tool reas­sembled in order to change the relationship between the handles and jaws.
  • Such a construction is cumbersome to use as it requires unneeded preparation time prior to use, and may alter the configuration of the tool such that it becomes uncomfortable to use.
  • at least some such tools have significantly different mechanical advantages in the internal and external positions.
  • a proposed tool provided handles which were intended to be relatively moveable between internal and external positions.
  • To accomplish this one lever included a U -shaped slot and the other carried a pivot which projected through the slot. Presumably the levers can be moved from a crossed internal ring relationship with the pivot at one end of the slot to a side by side external ring relationship. If the proposed tool was operable at all, it lacked structure to maintain the levers in a selected relationship when in use.
  • the present invention provides a new and improved hand tool for removing and installing internal and external retaining rings.
  • the tool includes two levers permanently connected together which nonetheless may be easily switched between internal and external operating positions.
  • reaction forces resulting from a work operation apply a position retention force to maintain the levers in a selected relationship while a work operation is performed.
  • the tool comprises right and left operating lever sections pivotally interconnected together with driving structure for shifting the lever sections between tool operating positions.
  • Each of the lever sections includes a jaw portion, a handle portion and a boss portion inter­mediate the jaw and handle portions.
  • the pivotal interconnection of the lever sections is perpendicular to and intersects an imaginary center line which bisects the tool.
  • the interconnection of the lever sections and position of the jaw and handle portions of the lever sections is configured in a side by side relationship during operation of the tool in the external position.
  • both the jaw and handle portions of the one lever section operate on one side of the center line, while the jaw and handle portions of the other lever are on the other side of the center line.
  • the portions are crossed such that the jaw and handle portions of the one lever operate on opposite sides of the center line, and the jaw and handle portions of the other lever are also opposite one another relative to the center line.
  • one lever section and the driving structure which comprises a driving knob, are coupled together so that the other lever section moves relative to the one lever section and driving knob.
  • the lever sections are crossed.
  • the driving knob is manually rotated to shift the levers for operation in the internal position, the lever sections move to opposite sides of the center line in side by side relationship.
  • the tool is configured to provide a movable relationship between the lever sections for internal and external positioning, there is no requirement that discrete handle members and jaw members be selectively interconnected for being reversibly coupled to one another.
  • the present invention instead provides that the levers are shiftable between positions.
  • a driving knob couples the levers.
  • the knob includes a handle portion, a lever engagement portion and a base portion disposed in a circular recess in one of the levers.
  • a pivot connects that base portion to the other lever in eccentric relationship.
  • the base portion includes an arcuate groove which is coaxial with the base portion.
  • the other lever includes a projection which extends into the groove in a work position orientation relationship.
  • the handle portion of the knob is manually rotated to cause eccentric relative lever movement so jaw tip passes over the other.
  • the projection travels within the knob groove following the arcuate path of the groove over an arc of 180° or more.
  • the levers move from one of internal and external positions to the other arriving in the other position upon the projection reaching the other end of the path.
  • the guiding portion acts as a stop member which stops rotation of the tool in the proper operating position.
  • one lever section is coupled with a driving knob at a driving connection.
  • the other lever section is moveable relative to the one lever section and knob.
  • the driving knob is used as in the originally preferred embodiment, in that manual rotation of the knob shifts the lever sections between an external position to opposite sides of the center line in their side by side relationship and a crossed internal ring relationship.
  • the driving knob of the now preferred embodiment comprises a drawn cup-shaped member having an annular side wall, a bottom portion supporting the knob on the one lever section, and a cap member engaged with the annular wall and supported within the cup member.
  • a pivot connection secures the knob and lever sections together in eccentric relationship.
  • the one lever section includes an arcuate groove for engagement with the driving connection in a work position establishing relationship, and a recessed aperture for engagement with the driving connection in a flush working relationship with respect to the other lever section. Movement of the knob results in eccentric relative lever movement so that one jaw tip passes over the other. As the knob is rotated, the driving connection travels within the lever groove following the arcuate path of the groove over an arc of 180° or more. The levers thus move from one position, and arrive at the other position when the driving connection reaches the other end of the arcuate path. Upon contacting the other end of the groove, the driving connection serves as a stop member for stopping rotation of the tool in the proper operating position.
  • the tool driving structure comprises a crescent shaped slot located in the boss portion of one lever.
  • a pivot is connected to the other lever and extends through the slot.
  • the slot is preferably configured to include two stop locations, where, upon movement of the lever section to one stop location or the other, the tool is positioned in either the internal or external operating modes.
  • the pivot interconnecting the lever sections is engaged through the slot and is engaged along one or the other of the stop locations.
  • reaction forces maintain the tool in at least one of its adjusted positions.
  • the arcuate groove is in excess of 180° in length, the projection passes over center and the reaction forces urge the projection against the appropriate end of the groove when in its external ring position.
  • the pivot is forced against surfaces of the appropriate one of the stop locations in both positions.
  • the tool of the preferred embodiment of the present invention preferably includes a spring interposed between the lever handle portions for biasing the handles away from one another.
  • the device includes a locking lever arm pivotally mounted on the handle portion of the one lever section.
  • the lever arm is positioned to lockingly engage a notched portion in the boss portion of the other lever section.
  • the notched portion is configured to engage and maintain the lever arm whereby the tool remains in the locked and closed position against the bias of the spring.
  • a raised stop limit on the other lever section is also used to limit the farthest handle position when the tool is in the internal position.
  • the stop limit engages the boss portion of the one lever section to prevent handle movement past a maximum open position.
  • FIG. 1-10 Three embodiments of the plier tool of the present invention for expanding or contracting retaining members are shown in Figures 1-10, Figures 11-14 and in Figures 15-20, respectively. Parts described in connection with the second and third embodiment that are identical to those of the first have been identified with the same reference numeral, but with a prime or double prime designation, and will not be separately described except to the extent required for clarity.
  • a hand tool A is adapted for expanding or contracting resilient members in an internal or external mode of operation.
  • the tool A includes a pair of lever sections 10, 12 each having a handle portion 14, covered by plastic grip covers 15, as in Figure 10.
  • the lever sections are pivotally interconnected for normally permanent but relatively movable action about a pivot pin in the form of a threaded fastener 16.
  • each lever section 10, 12 includes a jaw portion 18 having a forwardly projecting tip 20, and a boss portion 22. As shown in Figures 2 and 3, both tips 20 are integral with the lever section, but removable tips may be provided.
  • the boss portion 22 is positioned intermediate the handle and jaw portions 14, 18.
  • the lever sections 10, 12 are interconnected through their respective boss portions 22 by the pivot pin 16.
  • the tool A is manipulated between operating modes by a shifting or driving structure 28 which permits movement of the lever sections 10, 12 between the external position, when the lever sections are in a side by side relationship, Figure 10, and the internal position, in which the lever sections are in a crossed relationship, Figures 1, 6.
  • the tool A By manipulating the shifting or driving structure 28, the tool A is selectively moved to the internal mode of operation as shown in Figures 1 and 6.
  • the tool illustrated in Figure 6 is described as being in the open position. In this position, the handles are released or biased by the spring 24, and the jaw portions and their associated tips are located away from one another.
  • the handle portions 14 are squeezed towards one another, the jaw portions 18 and their associated tips 20 are moved towards one another to the closed position as shown in Figure 1.
  • the shift permitting structure includes a driving knob 30.
  • the driving knob 30, as shown in Figures 7-9, includes a base portion 32, a handle portion 34 and an engagement portion 36.
  • the engagement portion 36 has a cylindrical surface sized for interacting engagement with walls defining a circular recess or driving aperture 37 in one lever section.
  • the pivot 16 is interconnected with the knob base portion 32 to couple the knob 30 to the lever section 12.
  • the attachment aperture 13, through which the pivot pin projects, is offset such that the knob 30 is connected in an eccentric relationship.
  • the position of the attachment aperture and thus of the pivot 16 is preferably based on correct tip 22 alignment, and is obtained by appropriately sizing the radius of the engagement portion 36 and interconnecting circular recess 37.
  • a spring washer 16A is positioned intermediate ahead of the pivot pin 16 and the boss portion 22 of the lever section 12 to provide stability to the tool, and also provide friction forces which prevent the knob 30 from unintentionally rotating with respect to the lever section.
  • the distance the engagement portion projects into the aperture 37 is substantially less than or equal to the width of the lever section 10. The height of the engagement portion is necessarily limited so as to avoid interference with the lever section 12 which abuts the lever section 10 as shown in Figure 2.
  • reaction forces resulting from working operation of the tool apply a position retention force maintaining the tool levers in the selected position during operation.
  • a hand force and an internal retaining ring force operating on the tool result in a reaction force which biases the knob in a direction out of its proper operating position.
  • Frictional retention forces provided by the spring washer 16A act against the reaction force to retain the knob and levers in their proper operating position.
  • the guiding engagement structure 38 limits lever rotation through operating engagement with an arcuate groove 33 in the base portion 32 of the knob 30.
  • the guiding engagement structure 38 comprises a guide post 39 projecting from the boss portion of lever section 10. During manipulation of the tool between internal and external positions, the guide post 39 engages the arcuate groove 33. Movable engagement of the guide post 39 within the groove 33 is permitted, since the height and diameter of the guide post 39 are proportionate to the depth and width of the arcuate groove 33.
  • the lever section 12 moves in eccentric relation, with the guide post moving within the arcuate groove 33 until the tool is positioned in internal and external operating modes when the guide post engages the ends 40, 41 of the groove 33.
  • the guide post 39 performs as a stop member which stops rotation of the tool in the internal or external operating position upon reaching the end of the groove corresponding to the selected position.
  • the tool is in the internal position when the post 39 contacts the end of the groove 41, as shown in Figure 1, and is in the external position when the post 39 contacts groove end 40.
  • the radius of the arcuate groove 33 is transverse to the central axis of the knob and extends, as shown in Figure 7, more than 180° about the perimeter of the base portion 32.
  • eccentric movement of lever section 12 is permitted between the crossed relationship in the internal position, and the side by side relationship in the external position, whereby the jaw portion and tip of lever section 12 pass under the jaw and tip of lever section 10 without interference.
  • Knob rotation of more than 180° is preferable in order to obtain a path of non-interfering travel between tips 20 having degrees of angulation of the type shown on the tool in Figure 2.
  • the hand tool A′ illustrated in Figure 11 includes a pair of lever sections 10′, 12′ each having a handle portion 90, covered by plastic grip covers 15′.
  • the lever sections are pivotally interconnected about a driving connection 90, which couples the lever sections 10′, 12′ and a driving knob 30′.
  • the driving connection 90 is in the form of a rivet joint 94. Jaw portions 18′ having tips 20′, and boss portions 22′, are also included as in the prior embodiment.
  • the knob 30′ and lever sections 10′, 12′ are connected by the rivet joint 94 through respective aligned apertures 95, 96, and 97.
  • the tool A′ is manipulated between positions by rotation of the driving knob 30′.
  • the lever sections move between internal and external positions in their side-by side relationship as described with respect to the above embodiment. Movement between positions is provided by a driving structure 28′ which includes a pivot connection 100 and the driving connection 90.
  • the pivot connection 100 interconnects the one lever section 10′ with the driving knob 30′ so that the other lever section 12′ moves relative to the one lever section and knob.
  • the pivot and driving connections 100, 90 are best illustrated in Figure 14.
  • the pivot connection 100 includes a rivet 101 which engages the knob 30 and one lever section 10′ through respective aligned apertures 102, 103.
  • Both the driving and pivot connection rivets 94 and 101 which may include spring washers (not illustrated) similar to that shown in Figure 2 for providing stability to the tool, preventing unintention­al tool movement, and maintaining the tool in the selected operating position.
  • the rivet 101 includes a countersunk head portion 104 for engagement with a recessed portion 106 of the aperture 103 in the one lever section 10′, so that the one lever section 10′ and pivot connection 100 are flush with respect to the one lever section 10′, as shown in Figure 14, to avoid interference with the lever section 12′ which abuts the one lever section and rivet 101.
  • the driving knob 30′ of this embodiment comprises a drawn cup-shaped member 108 having an annular side wall 110 with an outer knurled finger-engaging surface 111, a bottom portion 112 with an inner surface 114 and an outer surface 116 for engaging the one lever section 10′.
  • the driving knob 30′ also includes a cap member 118 having a plurality of finger-like portions 120 for engaging with the annular side wall 110 to support and secure the cap member 118 within the cup member.
  • the one lever section 10′ further includes an arcuate groove 122 for engagement with the driving connection 90 in a work position establishing relation­ship. Movement of the tool between positions is thus provided by manual rotation of the knob which moves the driving connection along the lever groove following the arcuate path 122 over an arc of 180° or more.
  • the other lever section 12′ moves in eccentric relation with respect to the interconnected knob 30′ and one lever section 10′.
  • the levers 10′, 12′ thus move from one position, and arrive at the other position when the driving connection reaches the other end of the groove.
  • the rivet 94 serves as a stop member for stopping rotation of the tool in the selected operating position.
  • FIG. 15-20 an alternate embodiment of the present invention is shown.
  • the tool B is identical in all respects to the embodiments of Figures 1-10 and 11-14, except that a different shifting or driving structure 28 ⁇ is provided in the form of a crescent shaped slot 50 in the one lever section 10 ⁇ . Since the embodiment of hand tool B contains structure similar to the embodiments previously described, reference numerals having a double prime designation will be used.
  • the lever sections 10 ⁇ , 12 ⁇ are pivotally intercon­nected for normally permanent but relatively movable action about a pivot pin or threaded fastener 16 ⁇ .
  • the slot 50 preferably includes stop locations 52, 53, where, upon movement of the lever sections such that the fastener 16 ⁇ is engaged along one stop location, the tool is positioned in one operating position. Intercon­nection of the lever sections 10 ⁇ , 12 ⁇ by the pivot pin 16 ⁇ is through attachment aperture 13 ⁇ in lever section 12 ⁇ and through the crescent slot 50 in lever section 10 ⁇ , as shown in Figure 20.
  • the tool B is manipulated between internal and external operating modes by movement of the lever sections 10 ⁇ , 12 ⁇ . As illustrated in Figure 15, the tool is in the internal-closed position, where the lever sections 10 ⁇ , 12 ⁇ are in a crossed relationship. Figure 16 shows the tool B in the internal-open position. It should be noted that orientation of the tool in the internal operating position occurs when the lever section 10 ⁇ is moved such that the pivot pin 16 ⁇ is engaged along a stop location 52 in the boss portion 22 ⁇ of lever 10 ⁇ . Orientation in the internal position also results in the tips 20 ⁇ being canted toward one another.
  • Figures 17 and 18 illustrate the tool B in the external operating position where the lever sections 10 ⁇ , 12 ⁇ are in a side by side relationship. Movement to the external position shown is accomplished by manipulating the lever section 10 ⁇ such that the pivot pin 16 ⁇ is engaged with a stop location 53 also in the boss portion 22 ⁇ of lever 10 ⁇ . In this external position, the tips 20 ⁇ are canted away from one another in an outward direction to facilitate retentive gripping of the retaining rings. Resisting engagement of the tips 20 ⁇ of the tool with the retaining ring in either the internal or external operating mode causes the pivot 16 ⁇ to be forced against the stop locations 52, 53, rather than inwardly along the slot and out of the operating position.
  • the tool preferably includes a biasing spring 24, 24′ which urges the handles apart.
  • the spring 24, 24′ is interconnected with the handle portions of the lever sections 10, 12 and 10′, 12′ by spring mounts 26, 26′.
  • a locking mechanism for locking the handles in a closed position to inhibit their separation.
  • the mechanism includes a pivotally mounted locking lever 56 secured to the handle portion 14 of the lever section 10 by a pivot 57 projecting through a lock aperture 66 in the lock lever.
  • the lever is pivotable between lock and unlock positions, and is generally configured to minimize tool interference dis­engagement from the lock position upon movement or contact with other items during storage.
  • the lever 56 includes a spring engagement surface 58 for engaging the spring when in a locked position.
  • the lever 56 also includes a latch portion 60 engageable with a notched portion 62 formed on the periphery of the boss portion 22 of lever section 12 as shown in Figure 1.
  • the lever further includes a finger engaging portion 64 which extends from the lever 56 and overlies the outside edge of the handle 14.
  • the finger portion 64 provides for ease of manual pivoting of the lever in and out of the lock position. It should be apparent that when the handles are squeezed and the latch portion 60 is disengaged from the notch portion 62, the spring 24 pivotally biases the lever out of engagement with the lever section 12 along the spring engagement surface 58.
  • a stop limit 130 raised from one surface of the other lever section 12′, is used to limit the internal ring tool handle position to a maximum open position. As shown in Figure 12, the stop limit abuts the boss portion 22′ to limit the opening of the spring biased handle portions 14 ⁇ to a maximum open position.
  • the present invention thus provides an inexpensive tool for the expansion and contraction of resilient retaining members.
  • the tool is easily switched between the internal and external operating modes by merely manipulating the shifting or driving structure 28.
  • lever sections of the tool illustrated are constructed from stampings, the making of which is known by those skilled in the art. It should also be recognized that other relatively inexpensive methods of manufacture could be used to produce the disclosed tool components, such as using powdered metal technology.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
EP19880304086 1987-05-07 1988-05-05 Handwerkszeug Expired - Lifetime EP0290260B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US46851 1979-06-08
US4685187A 1987-05-07 1987-05-07
US18201688A 1988-04-29 1988-04-29
US182016 1988-04-29

Publications (3)

Publication Number Publication Date
EP0290260A2 true EP0290260A2 (de) 1988-11-09
EP0290260A3 EP0290260A3 (en) 1990-01-03
EP0290260B1 EP0290260B1 (de) 1995-11-02

Family

ID=26724366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880304086 Expired - Lifetime EP0290260B1 (de) 1987-05-07 1988-05-05 Handwerkszeug

Country Status (3)

Country Link
EP (1) EP0290260B1 (de)
CA (1) CA1312454C (de)
DE (1) DE3854628T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0794039A1 (de) * 1996-03-01 1997-09-10 Hazet-Werk Hermann Zerver GmbH & Co. KG Zange mit zwei Zangenhälften aus Kunststoff-Formkörpern

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1334877A (en) * 1972-10-06 1973-10-24 Wynn Timmins Co Ltd Circlip pliers
DE2364509A1 (de) * 1973-12-24 1975-06-26 Helge Johan Rindar Zange zum anbringen und entfernen von sicherungsringen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1334877A (en) * 1972-10-06 1973-10-24 Wynn Timmins Co Ltd Circlip pliers
DE2364509A1 (de) * 1973-12-24 1975-06-26 Helge Johan Rindar Zange zum anbringen und entfernen von sicherungsringen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0794039A1 (de) * 1996-03-01 1997-09-10 Hazet-Werk Hermann Zerver GmbH & Co. KG Zange mit zwei Zangenhälften aus Kunststoff-Formkörpern

Also Published As

Publication number Publication date
EP0290260A3 (en) 1990-01-03
EP0290260B1 (de) 1995-11-02
DE3854628D1 (de) 1995-12-07
CA1312454C (en) 1993-01-12
DE3854628T2 (de) 1996-06-20

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