Abstract: This invention pertains to plastic injection mold tooling, and also large forgings, formed from a low carbon mold steel having markedly increased hardening and hardenability properties in large sections as contrasted to currently available commercial products. The above attributes are obtained together with equal or better machinability and improved mold parting line wear. When manufactured in conjunction with a double melt process, this invention can improve significantly polishing characteristics and other attributes of molded parts in tooling sets.

Abstract: A skate including a tridimensional skate boot shell with a sole insert embedded in or received in the skate boot shell such that at least part of a thickness of the sole portion is defined under the sole insert, and a holder under the skate boot shell configured for retaining a ground-engaging skate element. The holder is connected to the sole insert by at least one fastener extending through the at least part of the thickness of the sole portion. A method of manufacturing a skate boot is also discussed.

Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. carried out using a reduced temperature gradient relative to the simple heating phase. The method further includes alternate cementing (C1-Cn) and nitridation (N1-Nn) steps at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).

Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° C. and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).

Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).

Abstract: Uniform hardenability is achieved in plastic injection mold and die block tooling of 20 inches and larger by the use of 0.05-0.20 vanadium in conjunction with low carbon steel in which ingots are hot worked to form mold and die blocks having cross sections of 20 inches and larger followed by water quenching and tempering.

Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles, comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).

Abstract: A method of manufacturing a skate boot shell, including shaping tridimensional outer and inner sub-shells, and bonding the shaped sub-shells together through lamination. The lamination is performed after the sub-shells are shaped and includes applying heat to the sub-shells and/or pressure on one of the sub-shells toward the other against a mold surface. A skate with three sub-shells is also discussed.

Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles, comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).

Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. carried out using a reduced temperature gradient relative to the simple heating phase. The method further includes alternate cementing (C1-Cn) and nitridation (N1-Nn) steps at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).

Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).

Abstract: Spring motor for toy vehicles mainly comprising a spring constituted by a twisting rubber skein driving a driving-shaft connected to the propeller by a gear transmission and carrying a maneuvering endpiece receiving a winding crank which crosses the circle swept by the propeller. A free wheel may be included in the gear transmission.

Abstract: An airplane model essentially comprising an assembly of struts, connecting the wings together and to the fuselage, and an elastic connecting strap for connecting the lower wings to the fuselage, which struts and connecting strap are flexible and resilient enough to allow the wings to pivot inside their plane, under the effect of a shock, and then to return them to their initial position. The invention relates in particular to the toy industry.

Abstract: An airplane model kit comprises one or more wings, integrally formed with temporary frames which are joined to the wings at their periphery, which frames are intended to avoid any deformation of the wings and are provided with imprints and lugs for easy and accurate positioning of the wing with respect to the fuselage or the rest of the model. The frames further comprise a planar surface for ensuring that the frame-wing assembly does not twist and for ensuring the accurate positioning of the different wings with respect to one another.