EP0076440B1 - Vorrichtung zum Zusammenhalten des Kerns und der Hülse von Glasschliffen - Google Patents

Vorrichtung zum Zusammenhalten des Kerns und der Hülse von Glasschliffen Download PDF

Info

Publication number
EP0076440B1
EP0076440B1 EP82108835A EP82108835A EP0076440B1 EP 0076440 B1 EP0076440 B1 EP 0076440B1 EP 82108835 A EP82108835 A EP 82108835A EP 82108835 A EP82108835 A EP 82108835A EP 0076440 B1 EP0076440 B1 EP 0076440B1
Authority
EP
European Patent Office
Prior art keywords
ground
clamp according
rings
ground clamp
ground glass
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
Application number
EP82108835A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0076440A2 (de
EP0076440A3 (en
Inventor
Hermann Dr. Keck
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.)
Schott AG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0076440A2 publication Critical patent/EP0076440A2/de
Publication of EP0076440A3 publication Critical patent/EP0076440A3/de
Application granted granted Critical
Publication of EP0076440B1 publication Critical patent/EP0076440B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/56—Labware specially adapted for transferring fluids
    • B01L3/565—Seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L9/00—Supporting devices; Holding devices
    • B01L9/50—Clamping means, tongs
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44641—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member
    • Y10T24/44769—Opposed engaging faces on gripping member formed from single piece of resilient material
    • Y10T24/44906—Opposed engaging faces on gripping member formed from single piece of resilient material having specific surface irregularity on or along engaging face
    • Y10T24/44915—Corrugated or toothed face
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44641—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member
    • Y10T24/44932—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member having specific surface material or irregularity on or along engaging face

Definitions

  • the present invention relates to a joint clamp for holding the core and the sleeve of ground glass, in which the clamp arms are arranged concentrically one above the other and each have a recess for passage for the tubular elements to be connected, and wherein they are connected in one piece in an arcuate manner.
  • Such a joint clip is known from FR-A-1 581 182.
  • This joint clamp consists of three parts, namely a U-shaped spring plate and two removable lever arms for opening the spring plate.
  • the U-shaped curved spring plate has two plates which are approximately parallel in the operating state and have cutouts for the passage of the tubular elements to be connected.
  • the clamp arms are not flexible in the direction of the plane of the recess for inserting the tubular elements to be connected. This corresponds to the fact that the recess has a U-shaped cross-section, so that the tubular element can be inserted without spreading in the plane of the opening.
  • the object of the present invention is to provide a joint clamp which overcomes the disadvantages shown in the prior art.
  • the special advantageous properties of the device according to the invention also consist in particular in that the clamp arms are not plate-shaped, as in the prior art, but are designed as rings, so that there is flexibility in the plane of the recess for passage for the tubular elements to be connected, which in turn the recess can be reduced to approximately a third of the circumference of the circle, whereby the force of the joint clamp according to the invention can be distributed uniformly around the joint at the same time.
  • the joint clamp according to the invention is not only elastic in the plane of the passage opening, but also elastic in a special way in the axial direction due to the formation of the connection of the rings by several arches: this elasticity means that the rings arranged one above the other move elastically, practically parallel to one another can, so that handles or the like are not necessary.
  • the ground joint clip according to the invention can be pushed very easily over the ground joints to be connected and can be pulled off again; Damage to the glass cannot occur with the preferred use of plastic; it is also not possible to bend the joint clamp according to the invention.
  • Another significant advantage is that, due to the construction according to the invention, they can be easily produced in one piece and in a known manner in one step.
  • the annular clamp arm (1) has an opening (3) which is provided for the insertion of the core. This opening is preferably achieved by recessing about 1/3 of the circumference.
  • Cams 6 and grooves 7 are formed inside the clamp arm, the contact area of the ring on the heated glass surface being kept as small as possible, which in turn means that heating of the plastic and thus possible softening of the thermoplastic material is small.
  • the grooves (7) Through the grooves (7), the heat radiated by the heated glass, as well as the hot air rising from the bottom upwards, can escape upwards, as a result of which air circulation occurs, which prevents heat build-up on the rings in the joint clamp area.
  • the thinner wall thickness of the ring increases the flexibility, making it easy to put the clips on and take them off.
  • Any plastic that has a sufficiently high temperature resistance, preferably at least 150 ° C., and a high modulus of elasticity can be used as the material.
  • Suitable materials are polyoxymethylenes (POM), polyamides (PA), polycarbonates (PC), polyesters (PBTP, PETP), polyphenylene oxides (PPO), polysulfones and polyetherimides.
  • Polyoxymethylene is particularly preferred, for example the product that is sold by Dupont under the name "Delrin" with a melting point of 175 ° C., because this product has an extraordinarily good combination of temperature stability and inherent elasticity.
  • Arc-shaped lugs 5 are formed on the ring-shaped clamp arm 1 and connect the lower ring 2 to the clamp arm above it. Three arches 5 are preferably formed and distributed uniformly over the clamp arm in an angular range of approximately 120 °.
  • FIG. 2 shows how the upper, smaller clamp arm 1 is connected to the lower, larger clamp arm 2 via the arches 5.
  • the upper, smaller, annular clamp arm encloses the neck of the core, the lower, larger, annular clamp arm encompassing the sleeve, and the tight closure is brought about by the elastic tension of the connecting bends (5).

Landscapes

  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Clamps And Clips (AREA)
  • Joining Of Glass To Other Materials (AREA)
EP82108835A 1981-10-06 1982-09-23 Vorrichtung zum Zusammenhalten des Kerns und der Hülse von Glasschliffen Expired EP0076440B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6405/81 1981-10-06
CH6405/81A CH647732A5 (de) 1981-10-06 1981-10-06 Vorrichtung zum zusammenhalten des kerns und der huelse von glasschliffen.

Publications (3)

Publication Number Publication Date
EP0076440A2 EP0076440A2 (de) 1983-04-13
EP0076440A3 EP0076440A3 (en) 1984-12-05
EP0076440B1 true EP0076440B1 (de) 1989-04-19

Family

ID=4309060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82108835A Expired EP0076440B1 (de) 1981-10-06 1982-09-23 Vorrichtung zum Zusammenhalten des Kerns und der Hülse von Glasschliffen

Country Status (6)

Country Link
US (1) US4442572A (ja)
EP (1) EP0076440B1 (ja)
JP (1) JPS5872706A (ja)
CH (1) CH647732A5 (ja)
DE (1) DE3279622D1 (ja)
ES (1) ES277022Y (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3901512A1 (de) * 1989-01-19 1990-07-26 Stiller Kunststofftechnik Und Vorrichtung zum zusammenhalten von zwei rohrenden
CA2135706C (en) * 1993-11-15 1999-06-15 Walter E. Cover Retractable-needle cannula insertion set with refinements to better control leakage, retraction speed, and reuse
US6328347B1 (en) 1999-09-22 2001-12-11 Lsi Logic Corporation Uniform axial loading ground glass joint clamp
US20060088369A1 (en) * 2004-10-22 2006-04-27 Ping-Ling Wang Extendible rod locking sleeve structure
US10264736B2 (en) 2013-12-09 2019-04-23 Thriving Systems Design, Llc Radially slotted annular coupling system
US11414246B2 (en) 2019-11-24 2022-08-16 Patrick James McCluskey All-glass travel mug

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453669A (en) * 1946-06-19 1948-11-09 Able Scient Glass Apparatus Co Glass tubing joint
US2615238A (en) * 1948-01-26 1952-10-28 Highwood William Tank clamp support holder
US2924809A (en) * 1957-05-13 1960-02-09 Northrop Corp Transistor clip
US3543355A (en) * 1968-07-05 1970-12-01 Charles A Wyckoff Connector for tubular golf club bag separators
FR1581182A (ja) * 1968-08-02 1969-09-12
IT940918B (it) * 1970-09-17 1973-02-20 Ato Inc Morsetto ad aggancio rapido per oggetti cindrici
US3683462A (en) * 1970-12-28 1972-08-15 Gunter Voigt Holding clips
GB1461606A (en) * 1973-03-30 1977-01-13 Jonsson N G Couplings
US4110942A (en) * 1977-05-06 1978-09-05 Slocomb Jr Leon F Window frame manufacture

Also Published As

Publication number Publication date
ES277022U (es) 1984-07-16
ES277022Y (es) 1985-02-01
US4442572A (en) 1984-04-17
EP0076440A2 (de) 1983-04-13
CH647732A5 (de) 1985-02-15
JPS5872706A (ja) 1983-04-30
DE3279622D1 (en) 1989-05-24
EP0076440A3 (en) 1984-12-05
JPH0510522B2 (ja) 1993-02-10

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