Bicycle lock bracket

Abstract: A bicycle lock bracket system (10), for use with a lock (12) that has a U-shaped shackle (14) and a crossbar (16), that includes at least one spline (262, 276, 292, 204) on the shackle (14) and a body (30) that has a hub (34) at one end and a seat (32) at the other end. The splines (262, 276, 292, 204) may be integral with a shackle leg (20) or located on a tubular collar (220) that is immovably affixed to the shackle leg (20). The hub (34) has an opening (150) along an axis for receiving the shackle leg (20). The opening (150) includes at least one groove (154, 164) that is sized to fit the splines (262, 276, 292, 204). A stop (160, 258, 180) limits relative motion between the shackle (14) and the body (30). It has are several embodiments: a shoulder (258) adjacent to the splines (262), at least one groove (154) having a closed end (160), and a latch (180) extending into and across the hub opening (150). A fastener (136, 126) secures the seat (32) to the bicycle frame strut (8). It has two embodiments: a strap (136) and integral portions (126) of the seat (32) extending around the strut (8) held together by a screw/nut combination (122, 124).

Description: The present invention relates to mounting brackets for bicycle U-locks, and, more particularly, to a universal mounting bracket for releasably securing a bicycle U-lock to a bicycle frame. Since the invention of the bicycle lock and the continued improvement thereof, brackets for removably mounting these locks to the bicycle while not in use have not been far behind. In the mid 1970's, a bicycle lock comprising a U-shaped shackle and a crossbar and a matching bracket were developed, see U.S. Patent No. 4,155,231, and since then, the U-lock has become a favorite with bicyclists. The U-lock has gone through a series of improvements, but has maintained the basic U-shaped shackle and crossbar. As improvements in the U-lock have continued, so have brackets. There now exists a variety of brackets for removably attaching a U-lock to the bicycle, both single-part and two-part devices. Two such single-part brackets are disclosed in U.S. Patent Numbers 4,736,921, Clamp for Holding Bicycle Lock, and 5,076,526, Fastener for Bicycle Accessories. The single-part bracket has a pair of opposed contoured clamps. One clamp attaches to the bicycle frame and the other clamp has an L-shaped opening for holding the U-lock. The crossbar of an assembled U-lock is inserted into the vertical portion of the opening and is rotated until the shackle is aligned with the horizontal portion of the opening, and then inserted into the horizontal portion. In the disclosure of No. 4,736,921, the U-lock is held in place by the camming action of a lever that presses the sides of the horizontal portion against the shackle of the lock. In the disclosure of No. 5,076,526, the U-lock is held in place by a snap action facilitated by small protrusions at the top of the horizontal portion. A typical two-part bracket is disclosed in German Patent No. DE4312033A1. One part of the bracket mounts to the bicycle and the other part attaches to the lock. The two parts removably connect together by a tongue-in-groove mechanism, where the tongue of the lock-attached part slides into a groove in the cycle-mounted part. The two parts are kept from separating by a flexible strip that snaps into a slot in the tongue. The parts are separated by pressing together the ends of the strip so that it bends out of the slot, and sliding the tongue out of the groove. While these prior art brackets achieve their intended function, each has its drawbacks. Such drawbacks include (1) a loose fit so that the lock rattles when riding the bicycle, (2) only one viable bicycle mounting position because there is only one way that the U-lock can be attached to the bracket, (3) a safety issue wherein the U-lock can be ejected from the bracket during an accident, causing injury, and (4) moving parts that can jam if they become dirty. Embodiments of the bicycle lock bracket of the present invention seek to overcome the disadvantages inherent in the prior art bicycle lock brackets. According to the present invention, there is provided a bicycle lock bracket system comprising a bracket and a lock, the bracket being adapted releasably to hold the lock onto a strut of a cycle frame, wherein: i) the lock includes an elongated portion with an axis and an end; ii) the bracket includes a body having a hub at one end, a seat at the other end, and a medial section therebetween; and iii) said seat being adapted to receive said strut and being provided with a fastener for securing said seat to said strut; characterised in that: iv) there is provided at least a spline on said elongated portion, said spline being substantially parallel to said elongated portion axis; v) said hub has a hub opening along a hub axis for reception of said elongated portion, said hub opening having a cross-sectional profile that presents at least a groove parallel to said hub axis for reception of said spline; and vi) said hub has a stop for limiting relative motion between said elongated portion and said body. Advantageously, said fastener may include said medial section providing a through strap opening approximately perpendicularly to said seat axis and a strap projecting through said strap opening for securing said seat to said strut. Alternatively, said fastener may include said seat having a cylindrical shape, a gap in the wall of said seat to facilitate the positioning of said strut within said seat, a pair of flanges extending from said seat at opposite sides of said gap, said flanges being compressed together to secure said seat to said strut. In addition, the spline may be located on a collar affixed to said elongated portion. Advantageously, at least one of the at least one groove extends less than the entire length of the hub opening, thereby having a closed end, the stop including the closed end. Each of the splines may include two aligned portions and a gap therebetween, wherein a latch extends into the gap when the elongated portion is received by the hub opening, and the latch may include a means for the biasing of the latch into the gap and a means for the manual retraction of the latch from the gap. The stop may include the diameter of the hub opening decreasing along the hub axis, whereby the collar becomes wedged into the hub opening as the elongated portion is received by the hub opening. The stop may include a shoulder extending outwardly from the collar along a plane that is transverse with respect to the elongated portion axis. Typically, the present invention will be used with a lock that has a U-shaped shackle and a crossbar. The bracket includes at least one spline on the shackle and a body that has a hub at one end, a seat at the other end, and a medial section in between. The splines are located on one of the elongated portions of the shackle leg where they are parallel to the leg. There are two basic embodiments of the splines. In the first embodiment, the splines are integral with the elongated portion of the shackle leg. In the second embodiment, the splines are located on a collar that is affixed to the shackle leg. The collar has a tubular shape that surrounds the shackle leg. In one embodiment, the collar is press-fit onto the shackle leg. In another embodiment, there is a gap in the wall of the collar that is compressed by a screw/nut combination in order to frictionally affix the collar to the shackle leg. The body hub has an opening along an axis for receiving the elongated portion of the shackle leg. The free end of that leg is inserted into the hub opening before assembling the crossbar to the shackle. Within the opening is at least one groove that is sized to fit the splines. If there is more than one groove, the grooves may be equidistantly spaced about the hub opening so that the lock can be rotated into a convenient position before the splines engage the grooves. The body may be attached to a strut of the bicycle frame at the seat. A fastener may provide the secure attachment. In one embodiment, the seat is a semicylindrical surface and a strap, such as a hose clamp or plastic wire tie, extends through a hole in the medial section and around the strut. The strap is tightened to hold the seat securely to the strut. In another embodiment, integral portions of the seat extend around the strut and the fastener includes at least one screw/nut combination that tightens the seat to the strut. The stop for limiting relative motion between the elongated portion and the body has four basic embodiments. In one embodiment, the splines extend into the grooves until a spline contacts a wall at the bottom of a groove. In the second embodiment, the splines extend into the grooves until a shoulder at the top of the splines contacts the upper surface of the body. In the third embodiment, the hub opening decreases in diameter so that the shackle becomes wedged in the opening as it received the shackle leg. In the fourth embodiment, a latch extends into and across the hub opening. As the splines enter the grooves, the latch is forced out of the hub opening until an annular break in the splines is reached. At that point the latch snaps into the annular break, securing the elongated portion of the lock. The elongated portion is removed by manually disengaging the latch from the annular break. For a better understanding of the present invention and to show how it may be carried into effect, reference shall now be made, by way of example, to the accompanying drawings, in which: Fig. 1 is a side view of the present invention in use; Fig. 2 is a side view of the present invention in partial disassembly; Fig. 3 is a perspective view of the body of the present invention with the strap embodiment of the seat; Fig. 4 is a side view of the body of Fig. 3; Fig. 5 is a top view of the body of Fig. 3; Fig. 6 is a cross-sectional, assembled view of the strap embodiment of Fig. 3; Fig. 7 is a perspective view of the unitary embodiment of the seat of the present invention; Fig. 8 is a partial cross-sectional, exploded view of the unitary embodiment of Fig. 12; Fig. 9 is a cut-away view of a portion of the hub of Fig. 5 along the line 9-9; Fig. 10 is a top view of the single-groove embodiment of the hub; Fig. 11 is a perspective view of one embodiment of the latch; Fig. 12 is a cross-sectional, assembled partial view of the latch embodiment of Fig. 11; Fig. 13 is a partial cross-sectional, assembled partial view of another embodiment of the latch; Fig. 14 is a side view of one configuration of the integral embodiment of the collar of the present invention; Fig. 15 is a bottom view of the collar of Fig. 14; Fig. 16 is a side view of the multi-spline embodiment of the collar of the present invention; Fig. 17 is a bottom view of the collar of Fig. 16; Fig. 18 is a cross-sectional view of the collar of Fig. 15 taken along the line 18-18; Fig. 19 is a bottom view of the single-spline embodiment of the collar of the present invention; Fig. 20 is a side view of the multi-spline configuration of the collar for use with a latch configuration of the body; and Fig. 21 is an exploded side view of how the collar is attached. One embodiment of the bracket of the present invention 10 is shown in Figs. 1 and 2. In Fig. 1, the bracket 10 is shown as attaching a U-type bicycle lock 12 to a bicycle 6. As in Fig. 2, the U-lock 12 has a shackle 14 with generally parallel legs 20, and a crossbar 16 with apertures 18 for engaging the legs 20, 22 and a lock for optionally securing the shackle 14 and crossbar 16 together in order to anchor a part of the bicycle 6 to a stationary post or the like. The bracket 10 of the present invention includes two components, a body 30 and an insert 200. The body 30 attaches to a tubular frame strut 8 of the bicycle 6 and the insert 200 is affixed to a shackle leg 20. The insert 200 fits into an opening 150 in the body 30, where splines 262 on the insert 200 mate with grooves 154 in an opening 150 in the body 30. Referring now to the body of Figs. 3-13, the body 30 is the component that attaches to the bicycle 6 and some of its various embodiments are shown in detail in Figs. 3 to 13. The body 30 has three sections, a seat 32 at one end, a hub 34 at the other end, and a medial section 36 between the seat 32 and hub 34. The medial section 36 has a framework with a plurality of ribs 38 for maintaining the rigidity of the body 30. The seat 32 is adapted to permit the body 30 to be mounted to the frame strut 8 and has several embodiments. The strap embodiment 130 of the seat 32 is shown in Figs. 3-6. It is similar to the draw bar embodiment 40 in that the seat 32 consists of two semicylindrical surfaces 132, 134 at right angles to each other, such that, when viewed from both the side and top, the seat 32 appears as a semicylinder. Preferably, both semicylindrical surfaces 132, 134 have a radius of 0.625 inches and extend over about 110° of arc in order to fit most existing bicycles, although different sizes are contemplated. The strap embodiment 130 is mounted to the frame strut 8 by a strap 136, such as a metal hose clamp, plastic tie, or other similar device, that fits through one of a pair of curved slots 138, 140 that extend through the medial section 36 near the seat 32. The curve of one slot 138 is approximately concentric with the wall of one of the semicylindrical surfaces 132. The second slot 140 is located such that it intersects the first slot 138, so that the curve of the second slot 140 is approximately concentric with the wall of the second semicylindrical surface 134. Other configurations of the strap embodiment are contemplated, including different numbers of semicylindrical surfaces and slots. As in Fig. 6, the strap embodiment 130 is mounted to the bicycle 6 by first placing one of the semicylindrical surfaces 132, 134 against the frame strut 8. One end of the strap 136 is inserted through the appropriate slot 138, 140, and the strap 136 is tightened around the strut 8. The unitary embodiment 100 of the seat 32 is shown in Figs. 7 and 8. The seat 32 consists of a through cylindrical opening 102 that has a gap 104 in the wall 126. The gap can be located any place along the wall 126, but is preferably located at the point most remote from the hub 34. Preferably, the opening 102 has a diameter of about 1.25 inches in order to fit most existing bicycles, although different sizes are contemplated. Extending substantially perpendicular from the edges of the gap 104 are a pair of opposed flanges 106, 108. The flanges 106, 108 have a pair of axially-aligned through mounting holes 110, 112. The outer portions of the holes 114 are larger than the inner portion 116, creating a pair of shoulders 118, 120 in each hole. The unitary embodiment 100 is mounted to the frame strut 8 by enlarging the gap 104, for example, by hand, until it fits over the strut 8 and allowing the opening 102 to spring back into shape. A screw 122 is inserted into each of the mounting holes 110, 112 and a nut 124 is turned onto the screw 122 until the opening 102 is clamped tightly to the strut 18. At the opposite end of the body 30 from the seat 32 is the hub 34. The hub 34 has a through opening 150, the inner surface of which is substantially cylindrical. The preferred diameter of the opening 150 is 0.760 inches to fit the preferred size of the insert 200, although any practical size is contemplated by the present invention. Optionally, the diameter of the opening decreases slightly from one end to the other, so that the insert 200 becomes wedged as it fits into the opening 150. In the multi-groove embodiment, the details of which are shown in Figs. 5 and 9, there are a plurality of grooves 154 in the inner surface of the opening 152. The grooves 154 are substantially parallel with the axis of the opening 150. In one configuration, the grooves 154 extend for the entire length of the opening 150. In another configuration, the grooves 154 extend for the entire length of the opening 150 except for at least one groove 154, which extends from one end of the opening 150 to a short distance from the other end of the opening 150, thereby having a closed end 156, as in Fig. 9. Preferably, the grooves 154 are 0.125 inches deep. The sides of the grooves 158 are inclined at an angle of approximately 70° from the hole surface 152 and the width of each groove 154 is approximately 0.079 inches at its inner edge 160. In a preferred embodiment, there are twelve (12) grooves 154 spaced equidistantly about the opening surface 152. In the single-groove embodiment, the top view of which is shown in Fig. 10, there is a single groove 164 in the opening surface 162. The groove 164 is substantially parallel with the axis of the opening 166. In one configuration, the groove 164 extends for the entire length of the opening 166. In another configuration, the groove 164 extends from one end of the opening 166 to a short distance from the other end of the opening 166, thereby having a closed end. Preferably, the groove 164 has a depth of 0.125 inches. The sides of the groove 168 are inclined at an angle of approximately 70° from the opening surface 162 and the width of the groove 164 is approximately 0.079 inches at its inner edge 170. Another embodiment of the hub 34 includes a latch 180 for securing the insert 200 into the hub opening 150, one embodiment of which is shown in Figs. 11 and 12. It is contemplated that the latch 180 can be implemented with any of the previously described embodiments of the body. In this embodiment, the latch 180 has an approximately U shape with two legs 182, 184 connected at one end by a cross piece 186. The cross piece 186 acts as a spring to bias the ends of the legs 182, 184 apart. The legs 182, 184 have essentially a rectangular cross-section, but with one outer edge of the center portion of one leg being chamfered 188. The chamfer 188 permits the insert 200 to slide past the latch 180 more easily, as described below. The outside surface of the end of the chamfered leg 182 has a pad 190 containing non-slip grooves 192. Extending perpendicularly from the ends of the other leg 184 are a pair of flanges 194, 196, the purpose of which are described below. The latch 180 fits in a hole through the hub 198 that is tangential to the hub opening surface 152. The latch is oriented such that the pad 190 extends from one end of the hole 198 and the grooves 192 face toward the hub 34. The two flanges 194, 196 straddle the outer edges of the hole 198 to hold the latch 180 in position. The cross piece 186 biases the chamfered leg 182 into the hub opening 150. When the pad 190 is pressed rearwardly, the chamfered leg 182 retracts from the hub opening 150. In an alternate latch embodiment, shown in Fig. 13, the latch 142 is a substantially straight rod. The cross-sectional shape of the rod is unimportant, but is preferably rectangular with the upper edge of the center portion being chamfered 144 as in the previous latch embodiment 180. The two ends of the latch 146, 148 extend from a hole in the hub 172. The latch 142 is held in the hole 172 by flanges 174, 176 extending from both sides of the rod. The latch 142 is normally substantially straight, cutting a chord through the hub opening 150. When the ends of the latch 146, 148 are pressed together, the latch 142 bows such that it retracts from the hub opening 150. Preferably, the body 30 and latch 180 are composed of a rigid plastic, such as ABS, nylon 6/6, or glass-filled nylon 6/6. Referring now to the insert of Figs. 14-21, the insert of the present invention may have two basic embodiments, an integral spline embodiment and a collar spline embodiment. The collar embodiment has two embodiments, the multi-spline embodiment and the single-spline embodiment. The integral embodiment 202 of the insert 200 is shown in Figs. 14 and 15. In this embodiment, a single spline 204 extends outwardly from the shackle leg 20. The spline 204 is substantially parallel with the axis of the shackle leg 20 and extends for a length of about 1 inch. The spline 204 preferably extends outwardly about 0.125 inches from the shackle leg 20. Preferably, the approximately 0.073 inches of the spline closest to the end of the leg 206 is chamfered at an angle of about 45°. The sides of the spline 208 are inclined at an angle of about 70° from the leg 20 and the width of the spline outer edge 210 is about 0.720 inches. This embodiment contemplates that the spline 204 may be located at any position about the circumference of the shackle leg 20. This embodiment also contemplates that there can be more than one spline 204 extending from the leg 20. One configuration of the multi-spline embodiment 220 of the insert 200 is shown in Fig. 16. A collar 220 is affixed to a leg 20 on the shackle 14. The collar 220 is tubular in shape and is about 1.50 inches long. The cross-section of the central bore of the collar 222 is preferably circular, but other shapes, such as square, hexagonal, or octagonal, are contemplated and the use of such shapes depends on the cross-section of the shackle leg 20 to which the collar 220 is affixed. Regardless of the shape of the bore 222, the dimensions of the bore cross-section remain substantially constant throughout the entire length of the collar 220. In one method of affixing the collar 220 to the shackle 14, the bore 222 is slightly smaller than the diameter of the shackle leg 20. The collar 220 is forced onto the shackle leg 20, stretching the diameter of the collar 220 slightly, so that the collar 220 is held onto the shackle 14 by the great amount of friction between the collar 220 and shackle 14. Another method of affixing the collar 220 to the shackle 14 is shown in Figs. 17 and 18. There is a gap 224 in the wall of the collar 220 that extends completely through the wall for the entire length of the collar 220 and is parallel to the axis of the bore 222. The gap 224 is bordered by two edges of the collar wall 226, 228. As shown in Fig. 16, there are three contiguous sections over the length of the collar 220: the guide 234 at one end 230, the clamp 236 at the other end 232, and the spline section 238 between the guide 234 and the clamp 236. Preferably, the outside surface of the guide 240 is substantially smooth and extends about 0.225 inches from the end 230. Preferably, the outside diameter of the guide 234 is about 0.725 inches and the about 0.030 inches adjacent to the end 242 is chamfered at an angle of about 45°. Extending for about 0.375 inches from the other end of the collar 232, with an outside diameter of about 1.250 inches, is the clamp 236. The purpose of the clamp 236 is to immovably secure the collar 220 to the shackle 14, as in Fig. 21. The clamp 236 secures the collar 220 to the shackle 14 by squeezing together the two edges 226, 228 bordering the gap 224 after the collar 220 is positioned on the shackle 14. The edges 226, 228 are squeezed together by a screw 244 and nut 246 combination extending through a bore 248. The bore 248 runs perpendicularly through the gap edges 226, 228. Each end of the bore 248 has a countersink 250, 252, one round for the screw 244 and one hexagonal for the nut 246. Between the guide section 234 and clamp section 236 is the spline section 238. The surface of the spline section 256 is substantially cylindrical with a diameter of about 0.750 inches to match the diameter of the hub opening 150. Optionally, as with the hub opening 150, the diameter of the spline section 256 decreases slightly from the clamp section 236 to the guide section 234, so as to wedge the spline section 238 in the hub opening 150. The difference in diameter between the clamp section 236 and the spline section 238 creates a shoulder 258. In the multi-spline embodiment 220, a plurality of splines 262 extend outwardly from the spline section surface 256. The splines 262 are substantially parallel with the axis of the collar bore 222 and extend over the entire length of the spline section 238. Each spline 262 preferably extends outwardly about 0.125 inches from the spline section surface 256. As a result, the outer diameter of the spline section 238 at the outer edge of the splines 268 is about 0.250 inches greater than the diameter of the spline section surface 256. The sides of the splines 266 are inclined at an angle of about 70° from the spline section surface 256 and the width of each spline 262 is about 0.720 inches at its outer edge 268. Preferably, the approximately 0.073 inches of the splines 264 adjacent to the guide 234 is chamfered at an angle of about 45°. There are preferably 12 splines 262 spaced equidistantly about the spline section surface 256. In the single-spline embodiment 270, the bottom view of which is shown in Fig. 19, a single spline 276 extends outwardly from the spline section surface 274. The spline 276 is substantially parallel to the axis of the collar 270 and extends over the entire length of the spline section 272. The spline 276 preferably extends outwardly about 0.125 inches from the spline section surface 274. Preferably, the approximately 0.073 inches of the spline 284 adjacent to the guide 282 is chamfered at an angle of about 45°. The sides of the spline 278 are inclined at an angle of 70° from the spline section surface 74 and the width of the spline outer edge 80 is 0.720 inches. Fig. 16 shows the insert 200 with splines that extend the entire length of the spline section. A different configuration of the spline section 238, shown in Fig. 20, is required for use with the latch configuration of the body. The latch configuration 290 of the collar is essentially the same as the previously described configurations, with the exception that the splines do not extend the entire length of the spline portion 238. Each spline 292 is split into two linearly aligned portions, the bottom portion 294 adjacent to the guide section 234 and the top portion 296 adjacent to the clamp section 236. Between the bottom portion 294 and the top portion 296 is the latch portion 298, where the surface of the spline section is exposed throughout the entire circumference of the spline section 238. The upper edge of the bottom portion 300 and the lower edge of the top portion 302 are substantially at right angles to the surface of the latch portion 298. Preferably, the approximately 0.073 inches of the bottom portion adjacent to the guide 304 is chamfered at an angle of about 45°. Preferably, the collar 220, 270 is composed of a rigid plastic, such as ABS, nylon 6/6, or glass-filled nylon 6/6. In operation, the body 30 is attached to a bicycle frame strut 8, as described above, such that the hub opening 150 is approximately vertical. When the integral insert 202 is used, the free end of the shackle leg 20 on which the spline 204 is attached is inserted into the hub opening 150 from the top. As the shackle 14 continues into the hub opening 150, the spline 204 mates with one of the grooves 154 of the hub opening 150. The shackle 14 continues into the hub opening 150 until the chamfered end 206 of the spline 204 make contact with the closed end 160 of one of the grooves 154. When the collar 220 is used, it is attached to a component of the lock 12 such as, for example, the shackle 14. A free end of the shackle 14 is inserted into the clamp end 232 of the collar bore 222 and the collar 220 is positioned on the shackle 14 so that it will not interfere with the operation of the lock 12. After the collar 220 is positioned, the screw 244 is inserted into the clamp bore 248 and is secured with the nut 246 until the collar 220 will not move relative to the shackle 14 when in normal use. To attach the lock 12 to the bicycle 6, the free end of the leg of the shackle 20 on which the collar 220 is attached is inserted into the hub opening 150 from the top. As the shackle 14 continues into the hub opening 150, the guide 234 enters the hub opening 150, aligning the axis of the collar 220 with the axis of the hub opening 150. As the collar 220 continues into the hub opening 150, the splines 262 of the spline section 238 mate with the grooves 154 of the hub opening 150. The collar 220 continues into the hub opening 150 until either the shoulder 258 makes contact with the top of the hub portion 46 or the chamfered end 264 of the splines 262 make contact with the closed end 160 of one or more of the grooves 154. When using either of the latch configurations, the free end of the shackle leg 20 on which the collar 290 is attached is inserted into the hub opening 150 from the top. As the shackle 14 continues into the hub opening 150, the guide 234 enters the hub opening 150, aligning the axis of the collar 290 with the axis of the hub opening 150. As the collar 290 continues into the hub opening 150, the bottom portion of the splines 294 mate with the grooves 154 of the hub opening 150. Eventually, the chamfered end of the bottom portion 304 makes contact with the chamfered portion of the latch 144, 188. Downward pressure on the shackle 14 forces the chamfered portion 144, 188 out of the hub opening 150. When the latch portion 298 is even with the chamfered portion 144, 188, the chamfered portion 144, 188 snaps into the latch portion 298. The bottom edge of the top portion 302 prevents the shackle 14 from moving any farther into the hub opening 150 and the upper edge of the bottom portion 300 prevents the shackle 14 from being accidentally removed from the hub opening 150. To remove the shackle 14 from the hub opening 150 for the first latch configuration 180, the latch pad 190 is pressed fully toward the body seat 32, disengaging the chamfered portion 188 from the collar 290, and the shackle 14 is pulled from the hub opening 150. To remove the shackle 14 from the hub opening 150 for the second latch configuration 142, the ends of the latch 146, 148 are pressed together, disengaging the chamfered portion 144 from the collar 290, and the shackle 14 is pulled from the hub opening 150. In the single-spline embodiment, the shackle 14 can be rotated about the axis of the hub opening 150 before the spline 204, 280 and groove 154 mate, providing the ability to place the lock 12 in the most convenient position for the bicycle 6. In the multi-spline embodiment, because the hub grooves 154 are the same size and equidistantly spaced about the hub hole surface 152 and the collar splines 262 are the same size and equidistantly spaced about the spline section 238, the shackle 14 can be rotated about the axis of the hub opening 150 before the splines 262 and grooves 154 mate, providing the ability to place the lock 12 in the most convenient position for the bicycle 6. The multi-spline embodiment provides more stability to the connection between the body 30 and insert 200 than the single-spline embodiment. After the shackle 14 is positioned and the splines 204, 262, 280 and grooves 154 are completely mated, the crossbar 16 is assembled to the shackle 14, effectively securing the lock 12 to the bicycle 6. By securing the lock 12 to the bicycle 6 in this manner, the lock 12 cannot be ejected from the bracket 10 during an accident, thus preventing further injury. Since certain changes may be made in the present disclosure without departing from the scope of the present invention, it is intended that all matter described in the foregoing specification and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense.

Claims: A bicycle lock bracket system comprising a bracket (10) and a lock (12), the bracket (10) being adapted releasably to hold the lock (12) onto a strut (8) of a cycle frame (6), wherein: i) the lock (12) includes an elongated portion (20) with an axis and an end; ii) the bracket (10) includes a body (30) having a hub (34) at one end, a seat (32) at the other end, and a medial section (36) therebetween; and iii) said seat (32) being adapted to receive said strut (8) and being provided with a fastener (136, 126) for securing said seat (32) to said strut (8); characterised in that: iv) there is provided at least a spline (262, 276, 292, 204) on said elongated portion (20), said spline (262, 276, 292, 204) being substantially parallel to said elongated portion (20) axis; v) said hub (34) has a hub opening (150) along a hub axis for reception of said elongated portion (20), said hub opening (150) having a cross-sectional profile that presents at least a groove (154, 164) parallel to said hub axis for reception of said spline (262, 276, 292, 204); and vi) said hub (34) has a stop (160, 258, 180) for limiting relative motion between said elongated portion (20) and said body (30). A bicycle lock bracket system as claimed in claim 1, wherein said fastener (136) includes said medial section (36) providing a through strap opening (138, 140) and a strap (136) projecting through said strap opening (138, 140) for securing said seat (32) to said strut (8). A bicycle lock bracket system as claimed in claim 1, wherein said fastener (126) includes said seat (32) having a cylindrical shape, a gap (104) in the wall (126) of said seat (32) to facilitate the positioning of said strut (8) within said seat (32), a pair of flanges (106, 108) extending from said seat (32) at opposite sides of said gap (104), said flanges (106, 108) being compressed together to secure said seat (32) to said strut (8). A bicycle lock bracket system as claimed in claims 1, 2 or 3, wherein said spline (262, 276, 292) is located on a collar (220) affixed to said elongated portion (20). A bicycle lock bracket system as claimed in any preceding claim, wherein said spline (292) includes two aligned portions (294, 296) and a gap (298) therebetween and wherein a latch (180) extends into said gap (298) when said elongated portion (20) is received by said hub opening (150), said latch (180) including a means (186) for the biasing of said latch (180) into said gap (298) and a means (190) for the manual retraction of said latch (180) from said gap (298).

Inventors: MCDAID CORNELIUS, MCDAID, CORNELIUS
Applicants: KRYPTONITE CORP, KRYPTONITE CORPORATION
Application year: 1996
Main classification: B62J11
IPC codes: B62J11