Attack-resistant ring lock
An exemplary ring lock generally includes a case, a shackle, and a lock mechanism. The shackle is movably mounted to the case. The lock mechanism is operable to selectively retain the shackle in a closed position. The case includes a first case portion including a first flange, and a second case portion including a second flange. In certain forms, the first flange and the second flange are welded to one another. In certain forms, the first flange and/or the second flange has a depth of one centimeter or less. In certain forms, the case includes at least one ramp configured to discourage gripping of the case.
1 . A ring lock, comprising:
a case having a body defining an aperture;
a shackle at least partially positioned in the aperture and movable between an open position and a closed position; and
a lock mechanism operable to selectively retain the shackle in the closed position; and
wherein the case comprises a flange extending radially outward from the body and having a radial depth dimension, and wherein at least a portion of the flange slopes along the radial depth dimension to an outer edge of the flange to discourage gripping.
2 . The ring lock of claim 1 , wherein the at least a portion of the flange comprises at least one ramp that slopes along the radial depth dimension to discourage gripping.
3 . The ring lock of claim 2 , wherein the flange comprises a plurality of the at least one ramp that each slope along the radial depth dimension.
4 . The ring lock of claim 2 , wherein the plurality of the at least one ramp are positioned about an outer periphery of the case.
5 . The ring lock of claim 2 , wherein a first portion of the case comprises a first plurality of the at least one ramp;
wherein a second portion of the case opposite the first portion comprises a second plurality of the at least one ramp; and
wherein each of the first and second plurality of the at least one ramp slopes along the radial depth dimension to discourage gripping of the flange.
6 . The ring lock of claim 5 , wherein the first plurality of the at least one ramp is aligned with the second plurality of the at least one ramp.
7 . The ring lock of claim 5 , wherein the first plurality of the at least one ramp is offset from the second plurality of the at least one ramp.
8 . The ring lock of claim 1 , wherein the radial depth dimension is one centimeter or less.
9 . The ring lock of claim 1 , wherein the case further comprises an arcuate wall;
wherein the flange extends radially outward from the arcuate wall; and
wherein the at least a portion of the flange slopes along the radial depth dimension from the arcuate sidewall to the outer edge of the flange.
10 . The ring lock of claim 1 , further comprising:
an outer housing positioned about the case, the outer housing including a lip that at least partially defines a guide path; and
an actuator operable to move the shackle between the closed position and the open position, the actuator comprising a knob including a channel; and
wherein the lip of the outer housing is received in the channel of the knob to limit the knob to movement along the guide path.
11 . The ring lock of claim 1 , wherein the case comprises:
a first case portion comprising a first flange; and
a second case portion comprising a second flange; and
wherein the first flange and the second flange are secured to one another to define the flange of the case.
12 . The ring lock of claim 11 , wherein at least a portion of each of the first flange and the second flange are sloped along the radial depth dimension to discourage gripping of the first flange and the second flange.
13 . The ring lock of claim 11 , wherein the at least one ramp comprises:
a first ramp formed on the first flange; and
a second ramp formed on the second flange; and
wherein the first ramp and the second ramp each slope along the radial depth dimension to discourage gripping of the first flange and the second flange.
14 . The ring lock of claim 13 , wherein the first ramp and the second ramp are positioned opposite one another.
15 . The ring lock of claim 13 , wherein the first ramp and the second ramp are offset from one another.
16 . The ring lock of claim 13 , wherein a plurality of the first ramp are formed on the first flange; and
wherein a plurality of the second ramp are formed on the second flange.
17 . A ring lock, comprising:
a case having a body defining an aperture, the case including:
a first case portion comprising a first flange portion; and
a second case portion comprising a second flange portion welded to the first flange portion to define a flange of the case;
a shackle at least partially positioned in the aperture and movable between an open position and a closed position; and
a lock mechanism operable to selectively retain the shackle in the closed position; and
wherein the flange of the case has a radial depth dimension, and wherein at least a portion of the flange slopes along the radial depth dimension to an outer edge of the flange to discourage gripping.
18 . The ring lock of claim 17 , wherein the at least a portion of the flange comprises at least one ramp that slopes along the radial depth dimension to discourage gripping.
19 . The ring lock of claim 18 , wherein the flange comprises a plurality of the at least one ramp positioned about an outer periphery of the case and each sloping along the radial depth dimension.
20 . The ring lock of claim 18 , wherein the at least one ramp comprises:
a plurality of first ramps formed on the first flange; and
a plurality of second ramps formed on the second flange; and
wherein the plurality of first ramps and the plurality of second ramps each slope along the radial depth dimension to discourage gripping of the first flange and the second flange.