FR2853215A1 - Implement for opening oysters has housing with lever and rack to control grip to hold shells of different sizes - Google Patents

Abstract

The implement for opening oysters has a housing (1) with a lever (2) which controls a grip (3) to hold a shell of whatever size. The grip has a rack which is manually adjustable and controlled by a linkage (11) connected to the main lever. It has a blade (4) sliding to penetrate between the shells and further blades to cut the muscle.

Description

The present invention relates to the opening of shelled seafood

mainly the

Oysters.

  The opening of these seafood is traditionally carried out using a knife or any other utensil provided with a pointed blade at its end inserted between the two shells in order to cut the muscle which connects them.

  The use of this method presents a major risk of injury both by the utensil used and by certain cutting hulls.

  The device according to the invention overcomes these various risks and drawbacks. 10 It comes in the form of a clamp consisting of a main body containing a sliding blade provided at its tip with two extractable blades.

  An adjustable claw keeps the shell during opening.

  A lower lever simultaneously controls all of the functions by means of a cable sliding on a half moon.

  The user with the device in hand adjusts the shell placed against the claw with the other hand as close as possible to the sliding blade.

  The action on the lower lever simultaneously controls the blocking of the claw holding the shell, the exit of the sliding blade which penetrates between the two shells and the extraction of the blades which cut the muscle thus causing the opening thereof. .

  This principle considerably reduces the physical effort required to open shellfish, especially oysters.

  The accompanying drawings illustrate the invention FIG. 1: represents the general external appearance of the device FIG. 2: represents the main body (1) 7 the operating principle of the extractable blades (5), the control rack (16), the compression spring folding system (7) and the traction return springs (8) of the sliding blade (4).

  Figure 3 shows the retaining claw (3), the return by compression spring (10), the blocking by rack (9), the link (l 1) which controls the rack (9), the half moon (13 ) or slides the steel cable (12).

  With reference to these drawings, the device comprises a main body (1), a control lever (2) articulated at the point (14) of a retaining claw (3), a blocking by rack (9) controlled by a link ( 11) connected to the lever (2) by a tension spring (15).

  The return of the claw (3) is ensured by a compression spring (10). The sliding blade 5 (4) leaves by a steel cable (12) sliding on a half moon (13) connected to the lever (2). The return is ensured by two traction springs (8).

  The operation of the extractable blades (5) is ensured by a rack rod (16) bearing on a movable stop (6) and their folding is ensured by a compression spring (7).

  The dimensions of the various elements that make up the device have no influence on its operating principle.

  Dimensions of the various components for information: - Main body 130 mm - Sliding blade 110 mm - Extractable blade 20 mm - Holding claw 40 mm - Control lever 90 mm 1) In summary, the present invention relates to a device for opening shellfish, mainly oysters, characterized by a main body (1), a holding claw (3) with rack locking (9) manually adjustable on the outward journey and controlled by a link (11) connected to the main lever (2), claw with mechanical return by a compression spring (10) which holds the shell, a sliding blade (4) containing at its end two extractable blades (5) controlled by pressing on a movable abutment (6).

  II) In summary, the return of the extractable blades (5) is ensured by a compression spring (7).

  III) In summary, the return of the sliding blade (4) is ensured by two traction springs (8). 30 IV) In summary, the single main lever (2) actuated by the user's hand pulls a steel cable (12), sliding on a half moon (13), which controls the exit of the sliding blade (4) then immediately extract the extractable blades (5).

3 2853215

Claims (1)

  1) Device for opening shelled seafood, mainly oysters, characterized by a main body (1), a holding claw (3) with rack locking (9) 5 manually adjustable on the outward journey and controlled by a link (l 1) connected to the main lever (2), claw with mechanical return by a compression spring (10) which holds the shell, and a sliding blade (4) containing at its end two extractable blades (5) controlled by a rack rod (16) bearing on a movable abutment (6).   II) Device according to claim (1) characterized in that the return of the extractable blades (5) is provided by a compression spring (7).   HII) Device according to claim (1) characterized in that the return of the sliding blade (4) is provided by two tension springs (8).   IV) Device according to claim (1) characterized in that the single main lever (2) actuated by the hand of the user pulls a steel cable (12), sliding on a half moon (13), which controls the output of the sliding blade (4) then immediately the extraction of the extractable blades (5) coming to bear on the movable stop (6), after introduction of the sliding blade (4).