Manual wrench for actuating cylindrical elements
The invention relates to a manual wrench for actuating cylindrical elements. The inventive wrench comprises a fixed jaw ( 1 ) and a moving jaw ( 3 ) which are disposed on one end of a handle ( 2 ), whereby the fixed jaw ( 1 ) is secured with a transverse keyed assembly. The invention also includes an elastic pin ( 5 ) which extends through said keying. Moreover, the face of the fixed jaw ( 1 ) that faces the moving jaw ( 3 ) is equipped with a toothed section ( 7 ) comprising identical teeth which extend along a curved zone such as to define a single arc.
1. A set of manual wrenches for actuating cylindrical elements, the set comprising:
a plurality of wrenches, each of the wrenches having,
an actuating handle;
a fixed jaw arranged on one end of the actuating handle;
a moving jaw articulated and rotatably mounted about an axis on the one end of the handle;
a spring fixed to the handle and actuating said moving jaw towards a closed position on the fixed jaw;
a toothed section on the fixed jaw;
the toothed section having teeth, each tooth thereof having a crest and the crests of the teeth determine an arc having a radius;
a center of the arc of the toothed section is located at a distance from a center of the axis of rotation of the moving jaw, wherein each of the wrenches, of the set of wrenches, has a different radius for the arc and each of the wrenches of the set of wrenches has a different distance; and
the radius of each of the wrenches is between 35 millimeters and 15 millimeters, and the distance is between 20 millimeters and 57 millimeters,
wherein for the plurality of wrenches in the set of wrenches, the radius of one wrench in the set is larger than the radius of a next wrench in the set and the distance of the one wrench in the set is smaller than the distance of the next wrench in the set.
2. The set of claim 1 , wherein the radius of the arc of each of the wrenches is between 31 millimeters and 20 millimeters.
3. The set of claim 1 , wherein the distance of each of the wrenches is between 21 millimeters and 49 millimeters.
4. The set of claim 1 , wherein the toothed section of each fixed jaw has two or more longitudinal grooves dividing the teeth into separate sections.
5. The set of claim 4 , wherein the moving jaw of each of the wrenches is equipped with a side recess in a coupling area and the spring is housed in said side recess.
6. The set of claim 5 , wherein the rear part of the coupling area provides a supporting stop of the moving jaw, preventing contact of the moving jaw with the toothed section.
7. The set of claim 4 , wherein the fixed jaw of each of the wrenches is formed by a member which is secured on the handle by means of a transverse keyed fitting, and an elastic pin which extends through the keyed fitting securely coupling the member to the handle.
8. The set of claim 7 , wherein the elastic pin extends through a hole going from a front part to a rear part in a coupling area, allowing the extraction of the pin by pushing from the rear part with a rod.
9. The set of claim 1 , wherein the fixed jaw of each of the wrenches is formed by a member which is secured on the handle by means of a transverse keyed fitting, and an elastic pin which extends through the keyed fitting securely coupling the member to the handle.
10. The set of claim 9 , wherein the elastic pin extends through a hole going from a front part to a rear part in a coupling area, allowing the extraction of the pin by pushing from the rear part with a rod.
11. The set of claim 1 , wherein the moving jaw of each of the wrenches is equipped with a side recess in a coupling area, the spring is housed in said side recess.
12. The set of claim 11 , wherein the rear part of the coupling area of each of the wrenches provides a supporting stop of the moving jaw, preventing contact of the moving jaw with the toothed section.