Back to results
US 10,570,647 B2Granted
Hoop lock with dual locking
AssigneeSchlage Lock Company LLC
InventorsDaniel Hugh Kindstrand, Manjunatha Ramakrishna
Life of this patent
Estimating the term…
Abstract
A hoop lock including a shackle, a crossbar, and a locking assembly operable to secure the shackle to the crossbar. The shackle may include a straight foot and a bent foot, and the locking assembly may engage the straight foot and the bent foot to secure the shackle to the crossbar.
Claims14
A hoop lock, comprising:
- a shackle including first and second substantially parallel legs, wherein the first leg includes a first foot aligned with the first leg, and the second leg includes a second foot angularly offset with respect to the second leg such that the second foot extends at an oblique angle relative to the first foot, wherein the first foot includes a first notch and the second foot includes a second notch;
- a tube including a first opening configured to receive the first foot and a second opening configured to receive the second foot;
- and
- an asymmetric locking assembly positioned in the tube, the locking assembly comprising:
- a lock cylinder including a spindle, wherein the spindle is rotatable in response to insertion of a proper key into the lock cylinder;
- a cam rotationally coupled to the spindle, and including a radial arm and an axial protrusion having a different configuration from the radial arm, wherein the axial protrusion is radially offset from a rotational axis of the cam, and wherein the cam is asymmetric about the rotational axis;
- a primary bolt including a channel, wherein the axial protrusion is received in the channel to define a first engagement interface between the primary bolt and the cam;
- a secondary bolt including a post engaged with the radial arm to define a second engagement interface between the secondary bolt and the cam;
- and
- a biasing member urging the secondary bolt toward the cam;
- wherein the first engagement interface and the second engagement interface are of different configurations;
- wherein the locking assembly has a locking state in response to a first rotational position of the cam and an unlocking state in response to a second rotational position of the cam;
- wherein, in the locking state, an engagement portion of the primary bolt is received in the first slot and an engagement portion of the secondary bolt is received in the second slot;
- and
- wherein, in the unlocking state, the engagement portions are not received in the slots;
- wherein the secondary bolt has an extended position in the locking state and a retracted position in the unlocking state;
- and
- wherein the biasing member urges the secondary bolt from the extended position toward the retracted position.
15 more elements
A lock, comprising:
- a shackle comprising a first leg including a straight foot, and a second leg including an angled foot, wherein the angled foot extends at an oblique angle relative to the straight foot, wherein the straight foot includes a first notch having a first width, and wherein the angled foot includes a second notch having a second width less than the first width;
- and
- a crossbar selectively coupled to the shackle, wherein the crossbar includes a tube in which the straight foot and the angled foot are received, wherein the crossbar further includes an asymmetric locking assembly positioned in the tube, and wherein the asymmetric locking assembly comprises:
- a lock cylinder including a spindle which is rotatable upon insertion of a proper key, wherein the lock cylinder is seated in the tube and is nearer to the straight foot than to the angled foot;
- a cam coupled to the spindle, the cam including a radial arm and an axial protrusion, wherein the axial protrusion is radially offset from a rotational axis of the cam, wherein the cam is asymmetric about the rotational axis;
- a primary bolt including a channel in which the axial protrusion is received to define a first engagement interface between the primary bolt and the cam, wherein the primary bolt has a first length and a first thickness, and wherein the first thickness corresponds to the first width such that the first notch is operable to receive a first end portion of the primary bolt;
- a secondary bolt including a post engaged with the arm to define a second engagement interface between the secondary bolt and the cam, wherein the secondary bolt has a second length and a second thickness, wherein the second length is greater than the first length, and wherein the second thickness is less than the first thickness and corresponds to the second width such that the second notch is operable to receive a second end portion of the secondary bolt;
- and
- a biasing member urging the secondary bolt away from the angled foot;
- wherein the first engagement interface between the primary bolt and the cam is of a different configuration than the second engagement interface between the secondary bolt and the cam;
- wherein the cam is operable to rotate about the rotational axis between a locking position and an unlocking position;
- wherein the axial protrusion is configured to drive the primary bolt into engagement with the straight foot as the cam rotates from the unlocking position to the locking position, thereby causing the first end portion to enter the first notch;
- wherein the axial protrusion is configured to drive the primary bolt out of engagement with the straight foot as the cam rotates from the locking position to the unlocking position, thereby causing the first end portion to exit the first notch;
- wherein the radial arm is configured to drive the secondary bolt into engagement with the angled foot as the cam rotates from the unlocking position to the locking position, thereby causing the second end portion to enter the second notch;
- wherein the biasing member is configured to drive the secondary bolt out of engagement with the angled foot as the cam rotates from the locking position to the unlocking position, thereby causing the second end portion to exit the second notch.
12 more elements
A lock, comprising:
- a shackle comprising a first leg and a second leg, the first leg including a straight foot, the second leg including an angled foot extending at an oblique angle relative to the straight foot, wherein the straight foot includes a first notch, and wherein the angled foot includes a second notch;
- and
- a crossbar selectively coupled to the shackle, wherein the crossbar includes a tube in which the straight foot and the angled foot are received, wherein the crossbar further includes an asymmetric locking assembly positioned in the tube, and wherein the asymmetric locking assembly comprises:
- a lock cylinder including a spindle;
- a cam coupled to the spindle, the cam including a radial arm and an axial protrusion that is radially offset from a rotational axis of the cam;
- a primary bolt including a channel in which the axial protrusion is received to define a first engagement interface between the primary bolt and the cam;
- a secondary bolt abutting the radial arm to define a second engagement interface between the secondary bolt and the cam;
- and
- a spring biasing the secondary bolt away from the bent foot;
- wherein the first engagement interface between the primary bolt and the cam is of a different configuration than the second engagement interface between the secondary bolt and the cam, thereby defining a first asymmetry of the asymmetric locking assembly;
- and
- wherein the cam is operable to rotate about the rotational axis between a locking position and an unlocking position;
- wherein the axial protrusion is configured to drive the primary bolt into engagement with the first notch as the cam rotates from the unlocking position to the locking position, and to drive the primary bolt out of engagement with the first notch as the cam rotates from the locking position to the unlocking position;
- wherein the radial arm is configured to drive the secondary bolt into engagement with the second notch as the cam rotates from the unlocking position to the locking position, and to permit the secondary bolt to move out of engagement with the second notch under the force of the spring as the cam rotates from the locking position to the unlocking position.
11 more elements
Dependencies are inferred from the claim text.