EP0156733A2 - Elektrisches Messer, insbesondere zum Öffnen von Austern - Google Patents

Elektrisches Messer, insbesondere zum Öffnen von Austern Download PDF

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Publication number
EP0156733A2
EP0156733A2 EP85400558A EP85400558A EP0156733A2 EP 0156733 A2 EP0156733 A2 EP 0156733A2 EP 85400558 A EP85400558 A EP 85400558A EP 85400558 A EP85400558 A EP 85400558A EP 0156733 A2 EP0156733 A2 EP 0156733A2
Authority
EP
European Patent Office
Prior art keywords
blade
housing
plunger
induction coil
counterweight
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.)
Withdrawn
Application number
EP85400558A
Other languages
English (en)
French (fr)
Other versions
EP0156733A3 (de
Inventor
Alain Gilbert
Jacques Gilbert
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.)
Norlac Plastiques SA
NORLAC PLASTIQUES
Original Assignee
Norlac Plastiques SA
NORLAC PLASTIQUES
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 Norlac Plastiques SA, NORLAC PLASTIQUES filed Critical Norlac Plastiques SA
Publication of EP0156733A2 publication Critical patent/EP0156733A2/de
Publication of EP0156733A3 publication Critical patent/EP0156733A3/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/06—Combined or separable sets of table-service utensils; Oyster knives with openers; Fish servers with means for removing bones
    • A47G21/061—Oyster knives with openers; Shellfish openers
    • A47G21/062—Oyster splitters working by forcing a knife or the like between shells
    • A47G21/065—Hand tools, e.g. shucking knives
    • A47G21/066—Hand tools, e.g. shucking knives electrically operated

Definitions

  • the present invention relates to an electric knife intended in particular for opening oysters, and more particularly such a knife of the type comprising a shoemaker, a blade capable of sliding in its longitudinal direction between an extended position relative to the housing and a retracted position by relative to the housing, and an induction coil mounted on the housing and arranged to vibrate the blade between its two positions.
  • the present invention aims to overcome this drawback.
  • the subject of the invention is a. electric knife intended in particular for the opening of oysters, of the type comprising a housing, a blade capable of sliding in its longitudinal direction between an extended position relative to the housing and a retracted position relative to the housing, and a mounted induction coil on the housing and arranged to vibrate the blade between its two positions, characterized in that it comprises a plunger disposed in said induction coil and a counterweight secured to the plunger, said counterweight being capable of performing movements of va -and comes under the action of the induction coil and to exert shocks on the blade when the latter is in the retracted position.
  • the knife according to the invention comprises means for supplying alternating current, rectifying means for supplying the induction coil with alternation in two of said alternating current so as to attract the plunger into a first direction during said alternation, and first elastic means for bringing the plunger in the other direction during the other alternation.
  • the rectifier means and the first elastic means are for example arranged so that said shocks are exervices on the blade when the plunger returns in the other direction under the former of said first elastic means.
  • shocks are consequently exerted by the counterweight under the impulse provided by the first elastic means, the stiffness of which can be easily chosen so as to impart to the counterweight a suitable inertia.
  • the knife according to the invention comprises second elastic means tending to return said blade to its extended position.
  • the counterweight is made of a non-magnetic material or is separated from the plunger by an element made of a non-magnetic material.
  • This knife has a housing 1 inside which is arranged an induction coil 2 crossed by a guide rod 3 carrying in its central part a plunger 4 and at one of its ends, located on the side of the knife 5, a counterweight 6 made of a non-magnetic material.
  • the induction coil is supplied with alternating current from a power cord 7 via a diode 8.
  • This alternation is chosen in the present case in such a way that, when the coil is energized, the plunger is drawn to the side opposite the knife 5 in the position shown in phantom.
  • a compression spring 9 is disposed between a shoulder 10 of the housing 1, and the counterweight 6, to exert a force on the counterweight in the direction of the knife 5. that is to say that the force exerted by the spring 9 is antagonistic to the electromagnetic forces exerted by the coil on the plunger 4.
  • the coil 2 is placed axially in the case 1 so that the spring 8 is in its compressed position when the plunger is at inside the coil, that is, when the electromagnetic forces have a maximum value.
  • the knife 5 has at its interior part of the housing 1 a heel 11 guided in a cavity 12 of the housing.
  • Compression springs 13 are arranged between the heel 11 and a shoulder 14 of the housing to exert on the knife 5 an effort directed towards the outside, that is to say that they tend to put the knife 5 in s ? extended position relative to the housing, shown in solid lines in their drawings and in which abutment surfaces 15 and 16 of the heel 11 and of the housing 1 respectively are in contact.
  • the knife 5 can slide relative to the housing 1 against the action of the springs 13, from this extended position shown in solid lines to a retracted position in the housing shown in broken lines.
  • a thrust washer 17 is mounted integral with the rod 3 between the counterweight 6 and the plunger 4 to come into contact with a shoulder 18 of the housing 1 in order to prevent the counterweight from coming to exert impacts on the blade 5 when the latter is in this extended position.
  • the blade 5 sinks towards its retracted position where it receives the shocks exerted by the counterweight 6.
  • shocks originate from the back-and-forth movement to which the assembly constituted by the rod 3, the plunger 4, and the counterweight 6 is subjected, under the effect of the electromagnetic forces caused by the induction coil 2 during alternating supply current, and elastic forces caused by the spring 9 during the other alternation.
  • the impact of the counterweight 6 on the heel 11 of the blade could be caused by the electromagnetic forces and the return movement by a spring.

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Knives (AREA)
  • Processing Of Meat And Fish (AREA)
EP85400558A 1984-03-23 1985-03-22 Elektrisches Messer, insbesondere zum Öffnen von Austern Withdrawn EP0156733A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8404525 1984-03-23
FR8404525A FR2561566A1 (fr) 1984-03-23 1984-03-23 Couteau electrique destine notamment a l'ouverture des huitres

Publications (2)

Publication Number Publication Date
EP0156733A2 true EP0156733A2 (de) 1985-10-02
EP0156733A3 EP0156733A3 (de) 1987-01-28

Family

ID=9302380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400558A Withdrawn EP0156733A3 (de) 1984-03-23 1985-03-22 Elektrisches Messer, insbesondere zum Öffnen von Austern

Country Status (3)

Country Link
EP (1) EP0156733A3 (de)
JP (1) JPS60256337A (de)
FR (1) FR2561566A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU589759B2 (en) * 1986-04-10 1989-10-19 Norcoute-Nouvelle Distribution Francaise Knife with vibrating blade

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103283507A (zh) * 2013-06-24 2013-09-11 张古权 一种便携式果树剪枝机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR900322A (fr) * 1943-07-30 1945-06-26 Bâti de support et de commande pour outils travaillant par chocs répétés
US2391739A (en) * 1944-04-29 1945-12-25 Geronimo R Ragupos Oyster opening machine
FR1107275A (fr) * 1953-06-18 1955-12-29 Metallwarenfabrik Markdorf Joh Dispositif à commande électrique pour outils à mouvoir axialement
FR1294842A (fr) * 1961-04-19 1962-06-01 Procédé d'ouverture de mollusques ou coquillages à valves et appareil servant à sa mise en oeuvre et pouvant également être utilisé comme ouvre-boîtes
FR1467152A (fr) * 1965-12-14 1967-01-27 Couteau ménager à lame vibrante
FR1587709A (de) * 1968-09-06 1970-03-27
FR2480103A1 (fr) * 1980-04-15 1981-10-16 Escoute Bernard Couteau electrique a ouvrir et a detroquer les huitres

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU589759B2 (en) * 1986-04-10 1989-10-19 Norcoute-Nouvelle Distribution Francaise Knife with vibrating blade

Also Published As

Publication number Publication date
FR2561566A1 (fr) 1985-09-27
JPS60256337A (ja) 1985-12-18
EP0156733A3 (de) 1987-01-28

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Effective date: 19870729

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Inventor name: GILBERT, ALAIN

Inventor name: GILBERT, JACQUES