# US 8,740,239 B2 · Bicycle sliding dropout > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,740,239 B2 - Document ID: US8740239B2 - Status: Granted - Kind: B2 - Application number: 12/822,076 - Filed: 2010-06-23 - Published: 2011-12-29 - Granted: 2014-06-03 - Earliest claimed: 2010-06-23 - Assignees: Alto Designs, LLC - Applicants: Wayne R. Lumpkin - Inventors: Wayne R. Lumpkin - Web page: https://patentgrep.com/patent/US8740239B2 ## CPC - B62K 19/30: Frame parts shaped to receive other cycle parts or accessories (axle suspensions B62K25/00) - B62K 25/02: for mounting axles rigidly on cycle frame or fork, e.g. adjustably - B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE ## Abstract A bicycle sliding dropout comprising a splitting body and a slider slidably engaging the splitting body. The splitting body comprises an inner body and an outer body, the inner and outer bodies being configured to abut each other vertically and matingly engage via a mechanical interface. ## Claims ### Claim 1 A bicycle sliding dropout comprising: a slider, the slider comprising an axle receptacle; and a splitting body, the splitting body comprising a first body part and a second body part, the first body part and the second body part each having a vertical face abutting a vertical face of the other, the vertical faces of the first body part and the second body part being releasably secured to each other, the splitting body and the slider being configured for slidable engagement relative to one another when operatively associated, so that the slider may slide fore and aft relative to the splitting body; and at least one screw radially spaced from the axle receptacle configured to secure the slider in a select position fore and aft relative to the splitting body and to releasably secure the vertical faces of the first and second body parts to each other by compressing the slider and first and second body parts together. ### Claim 2 (depends on 1) The bicycle sliding dropout of claim 1 wherein the slider and the splitting body are configured for slidable engagement by an extended boss on the slider and a substantially horizontal slot defined by the split body configured to receive the extended boss. ### Claim 3 (depends on 2) The bicycle sliding dropout of claim 2 wherein the first body part defines a substantially horizontal slot and the second body part defines a substantially horizontal slot aligned with the horizontal slot of the first body part with the vertical faces of the first body part and the second body part abutted, the substantially horizontal slots of the first and second body parts defining the substantially horizontal slot of the splitting body. ### Claim 4 (depends on 1) The bicycle sliding dropout of claim 1 further comprising the first and second body parts being configured to matingly engage via a mechanical interlock with their vertical faces abutting, the mechanical interlock comprising a flange and groove interface between the first and second body parts configured to substantially prevent movement of the first and second body parts relative to one another horizontally, vertically or rotationally with the vertical faces of the first and second body parts abutted vertically and matingly engaged. ### Claim 5 (depends on 3) The bicycle sliding dropout of claim 3 wherein the extended boss and the horizontal slots of the first and second body parts are configured so that with the extended boss received in the slots, relative rotation between the slider, the first and second body parts is substantially prevented. ### Claim 6 (depends on 3) The bicycle sliding dropout of claim 3 further comprising mechanical interlock between the abutting vertical faces of the first and second body parts, the mechanical interlock comprising a flange and groove interface between the first and second body parts configured to substantially prevent movement of the first and second body parts relative to one another horizontally, vertically or rotationally with the first and second body parts abutted vertically and matingly engaged and wherein the flange protrudes from near the periphery of the substantially horizontal slot of one of the first and second body parts and wherein the groove is disposed near the periphery of the substantially horizontal slot of the other of the first and second body parts. ### Claim 7 (depends on 2) The bicycle sliding dropout of claim 2 wherein the extended boss further comprises at least one internally-threaded hole in a distal end thereof. ### Claim 8 (depends on 1) The bicycle sliding dropout of claim 1 wherein one of the first and the second body parts further comprises an upper hood. ### Claim 9 (depends on 8) The bicycle sliding dropout of claim 8 wherein the upper hood comprises a bottom surface, wherein the slider further comprises an upper surface, and wherein the upper surface of the slider is configured to abut the bottom surface of the upper hood in a manner substantially preventing rotation therebetween. ### Claim 10 (depends on 8) The bicycle sliding dropout of claim 8 wherein the other of the first and second body parts further comprises a forward hood. ### Claim 11 (depends on 10) The bicycle sliding dropout of claim 10 wherein the forward hood comprises an internally-threaded hole. ### Claim 12 (depends on 10) The bicycle sliding dropout of claim 10 wherein the forward hood is attached to a bicycle chain stay. ### Claim 13 (depends on 10) The bicycle sliding dropout of claim 10 wherein the upper hood is attached to a bicycle seat stay. ### Claim 14 (depends on 10) The bicycle sliding dropout of claim 10 wherein the first body part and second body part are configured so that the forward hood and upper hood cooperate to abut and define a substantially continuous surface with the first and second body parts abutted vertically and matingly engaged. ### Claim 15 (depends on 1) The bicycle sliding dropout of claim 1 wherein the axle receptacle is aligned generally vertically, the axle receptacle comprising a downward facing opening, a forward surface, and an aft surface, and a receiving hole inset into the forward surface such that an axle may be received in the receiving hole. ### Claim 16 (depends on 15) The bicycle sliding dropout of claim 15 wherein the forward surface is inclined counterclockwise from vertical relative to the opening, the forward surface terminating at the receiving hole opposite the opening.