Torque resisting axle assembly

Claim 2

An axle assembly for an oscillable element comprising a first member having a cylindrical shank and a head, a second member having a cylindrical shank and a head, said members being formed for coaxial threaded association with their heads remote from each other, and a shroud rotatably sleeved on one of said members to enshroud the head and a portion of the shank of said one member, said shroud having a shank whose diameter is equal to that of the shank of the other of said members, a peripheral series of longitudinally-extending teeth at the distal end of the shank of said shroud, and a closely-meshing peripheral series of longitudinally-extending teeth at the distal end of the shank of said other member to prevent relative turning movement between said shroud and said other member about their common axis, each tooth of each series being defined at its tip by peripherally diverging plane surfaces.

Claim 3

The axle assembly of claim 1 in which each tooth of each series is defined at its root by peripherally diverging plane surfaces parallel with said first-named surfaces.

Claim 4

The axle assembly of claim 2 in which each of the plane surfaces at the root of each tooth meets a plane surface at the root of an adjacent tooth.

Claim 5

The axle assembly of claim 2 in which each tooth of each series displays peripherally oppositely facing, substantially axially-extending plane faces joining the proximal ends of said tip-defining surfaces with the distal ends of said root-defining surfaces.

Claim 6

The axle assembly of claim 3 in which each tooth of each series displays peripherally oppositely facing, substantially axially-extending plane faces joining the proximal ends of said tip-defining surfaces with the distal ends of said root-defining surfaces.

Claim 7

The axle assembly of claim 5 in which the root-defining surfaces of the teeth of one series incline radially inwardly and the tip-defining surfaces of the teeth of the other series incline radially outwardly.

Claim 8

In a panic exit device, a case mounted on a closure and providing a pair of spaced lugs, said lugs being formed with aligned apertures, a panic bar having, at one end, a lever arm having a portion proportioned and designed to fit between said lugs, said portion being formed with an opening aligned with, but diametrically smaller than, said aligned apertures, and an axle for said lever comprising a spool having a head snugly received in one of said aligned apertures and an internally threaded shank snugly received in said opening, a screw having a head and having a shank threadedly received in said spool bore, and a shroud having a head portion enshrouding said screw head and snugly received in the other of said aligned apertures and having a shank portion loosely sleeved on said screw shank and snugly received in said opening, said spool and said shroud shank portion being provided with mating, interengaging means to prevent relative rotational movement between said spool and said shroud.

Claim 9

In a panic exit device, a case mounted on a closure and providing a pair of spaced lugs, said lugs being formed with aligned apertures, a panic bar having, at one end, a lever arm having a portion proportioned and designed to fit between said lugs, said portion being formed with an opening aligned with, but diametrically smaller than, said aligned apertures, and an axle for said lever comprising a spool having a head snugly received in one of said aligned apertures and an internally threaded shank snugly received in said opening, a screw having a head and having a shank threadedly received in said spool bore, and a shroud having a head portion enshrouding said screw head and snugly received in the other of said aligned apertures and having a shank portion loosely sleeved on said screw shank and snugly received in said opening, said spool and said shroud shank portion being provided with mating, interengaging means to prevent relative rotational movement between said spool and said shroud.