Mounting device

Claim 1

A device for mounting a member on a plate, said plate having a round hole therein with diametrically opposed notches opening into said hole, comprising: a bearing integral with said member and adapted to fit within said hole for rotation about the axis of said hole, a head projecting forwardly from the end of said bearing opposite said member, two spring arms integral with said head at their forward ends, said member, bearing, head, and arms being unyielding in an axial direction, said arms diverging outwardly and rearwardly, said arms being adapted to pass through said notches, the distance between the rear ends of said arms and said member being less than the thickness of said plate, and said arms being adapted to flex in a circumferential direction when said bearing is fitted in said hole and said member is subsequently rotated relative to said plate whereby to enable said arms to move out of said notches and to press said member against said plate.

Claim 2

A device for mounting a member on a plate, said plate having a round hole therein with diametrically opposed notches opening into said hole, comprising: a bearing integral with said member and adapted to fit within said hole for rotation about the axis of said hole, a head projecting forwardly from the end of said bearing opposite said member, two spring arms integral with said head at their forward ends, said member, bearing, head, and arms being unyielding in an axial direction, said arms diverging outwardly and rearwardly, said arms being adapted to pass through said notches, the distance between the rear ends of said arms and said member being less than the thickness of said plate, and said arms being adapted to flex in a circumferential direction when said bearing is fitted in said hole and said member is subsequently rotated relative to said plate whereby to enable said arms to move out of said notches and to press said member against said plate.

Claim 5

A device for mounting a member on a flat plate, said plate having a round hole therein with diametrically opposed radially extending notches opening into said hole, comprising: a cylindrical bearing integral with said member and of a diameter to fit within said hole for rotation about the axis of said hole, a head projecting forwardly from said bearing, a pair of diametrically opposed spring arms integral with said head at their forward ends, said member, bearing, head, and arms being unyielding in an axial direction, the rear ends of said arms diverging outwardly and rearwardly. said arms being adapted to pass through said notches, said rear ends of said arms terminating a distance from said member less than the thickness of said plate, said arms being adapted to flex toward each other and in a circumferential direction when said head is fitted in said hole and subsequentially rotated whereby to move said rear ends out of said notches to enable said arms to press said member against said plate.

Claim 6

A device for mounting a member on a flat plate, said plate having a round hole therein with diametrically opposed radially extending notches opening into said hole, comprising: a cylindrical bearing integral with said member and of a diameter to fit within said hole for rotation about the axis of said hole, a head projecting forwardly from said bearing, a pair of diametrically opposed spring arms integral with said head at their forward ends, said member, bearing, head, and arms being unyielding in an axial direction, the rear ends of said arms diverging outwardly and rearwardly. said arms being adapted to pass through said notches, said rear ends of said arms terminating a distance from said member less than the thickness of said plate, said arms being adapted to flex toward each other and in a circumferential direction when said head is fitted in said hole and subsequentially rotated whereby to move said rear ends out of said notches to enable said arms to press said member against said plate.

Claim 7

A device for mounting two plates together, said plates each having a round hole therein with diametrically opposite radially extending notches opening into said hole, comprising: a member having a head formation, a cylindrical bearing projecting forwardly of said head formation, said bearing having a diameter to fit within said holes for rotation about the axis of said holes, said bearing being of a smaller diameter than said head formation to form an engaging shoulder, a head projecting forwardly from said bearing, a pair of rearwardly and outwardly diverging spring arms integral with said head at their forward ends, said member, bearing, head, and arms being unyielding in an axial direction, the distance between the rear ends of said arms and said engaging shoulder being less than the combined thickness of said plates, said arms being adapted to flex laterally in a circumferential direction, when said bearing is fitted in said hole and said member is rotated relative to said plates whereby to enable said arms to press said plates against said engaging shoulder.

Claim 8

A device for mounting two plates together, said plates each having a round hole therein with diametrically opposite radially extending notches opening into said hole, comprising: a member having a head formation, a cylindrical bearing projecting forwardly of said head formation, said bearing having a diameter to fit within said holes for rotation about the axis of said holes, said bearing being of a smaller diameter than said head formation to form an engaging shoulder, a head projecting forwardly from said bearing, a pair of rearwardly and outwardly diverging spring arms integral with said head at their forward ends, said member, bearing, head, and arms being unyielding in an axial direction, the distance between the rear ends of said arms and said engaging shoulder being less than the combined thickness of said plates, said arms being adapted to flex laterally in a circumferential direction, when said bearing is fitted in said hole and said member is rotated relative to said plates whereby to enable said arms to press said plates against said engaging shoulder.