Frictional hinge for electronic devices

A hinge assembly to permit pivoting movement of a first portion of an electronics device with respect to a second portion of the electronics device, comprising:

• a first mounting bracket and a second mounting bracket;
• a helical sleeve having a first end and a second end, the first end being connected to the first mounting bracket;
• a cylindrical shaft having an outer diameter and first and second ends and being connected at one of those ends to the second mounting bracket;
• the helical sleeve having an inner diameter such that when the helical sleeve is mounted onto the shaft, the outer diameter and the inner diameter produce an interference fit between the second end of the sleeve and the shaft.

A hinge assembly to permit pivoting movement of a first portion of an electronics device with respect to a second portion of an electronic device, comprising:

• a first mounting bracket and a second mounting bracket;
• a generally cylindrical sleeve having a first end and a second end, the first end being connected to the first mounting bracket, said generally cylindrical sleeve having two axially extending edges that are circumferentially spaced apart from one another defining a helix therebetween;
• a cylindrical shaft having first and second ends and being connected at one of those ends to the second mounting bracket;
• the cylindrical sleeve having a diameter such that when the helical sleeve is mounted onto the shaft, there is an interference fit between the second end of the sleeve and the shaft.

A hinge assembly to permit pivoting movement of a first portion of an electronics device with respect to a second portion of an electronic device, comprising:

• at least one first mounting bracket and at least one second mounting bracket;
• at least one sleeve, said sleeve having a first end and a second end, the first end being connected to the first mounting bracket, said sleeve comprising a helical portion;
• a cylindrical shaft having first and second ends and being connected at one of those ends to the second mounting bracket, the cylindrical sleeve having a diameter such that when the helical sleeve is mounted onto the shaft, there is an interference fit between the second end of the sleeve and the shaft;
• a torsional spring mounted onto the shaft so as to urge the first and second portions of the electronics device in a preferred direction.