# US 2019/0168794 A1 · Foldable strollers and related methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0168794 A1 - Document ID: US20190168794A1 - Status: Published application - Kind: A1 - Application number: 16/320,910 - Filed: 2017-07-27 - Published: 2019-06-06 - Earliest claimed: 2016-07-27 - Assignees: Kolcraft Enterprises, Inc. - Applicants: Kolcraft Enterprises, Inc. - Inventors: Mark Eyman; Peter Rolicki; Wes Thomas; Sebastiaan Ernst Raak; Martijn van Heteren - Web page: https://patentgrep.com/patent/US20190168794A1 ## CPC - B62B 7/08: in the direction of, or at right angles to, the wheel axis - B62B 7/008: {for two or more children} - B62B 7/142: {Means for securing the body to the frame} - B62B 9/00: Accessories or details specially adapted for children's carriages or perambulators (providing for travelling on snow B62B19/00) - B62B 9/102: {characterized by details of the seat} - B62B 9/104: {with adjustable or reclining backrests} - B62B 9/12: involving parts that are adjustable, attachable or detachable {(B62B9/102, B62B9/14 take precedence)} - B62B 9/20: Handle bars; Handles - B62B 9/28: Auxiliary dismountable seats {; Additional platforms for children in standing-up position} - B62B 2205/22: remotely controlled, e.g. from the handlebar - B62B: HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES (characterised by animal propulsion B62C; propulsion of sledges by driver or engine B62M) ## Abstract Foldable strollers and related methods are disclosed herein. An example frame for use with a stroller includes a first leg having a first wheel coupled thereto, a second leg having a second wheel coupled thereto, a first joint to couple the first leg and the second leg, a handle arm, and a second joint to couple the handle arm and the first leg. The handle arm is to rotate relative to the first leg via the second joint. The rotation of the handle via the second joint is to cause the second leg to rotate relative to the first leg via the first joint to fold the frame. ## Claims ### Claim 1 A frame for use with a stroller, the frame comprising: a first leg; a second leg; a first joint to couple the first leg and the second leg; a handle arm; and a second joint to couple the handle arm and the first leg, the handle arm to rotate relative to the first leg via the second joint, the rotation of the handle via the second joint to enable the second leg to rotate relative to the first leg via the first joint to fold the frame. ### Claim 2 (depends on 1) The frame of claim 1, further including a lock disposed in the first joint, wherein the rotation of the handle is to release the lock to cause the second leg to rotate. ### Claim 3 (depends on 1) The frame of claim 1, wherein the second joint is operatively coupled to the first joint via a cable, the cable to extend from the second joint to the first joint via the first leg. ### Claim 4 (depends on 3) The frame of claim 3, further including a pin disposed in the first joint, the cable coupled to the pin, wherein the rotation of the handle arm is to cause the cable to pull the pin to enable the second leg to rotate. ### Claim 5 (depends on 1) The frame of claim 1, wherein the second joint includes a first portion and a second portion, the first portion removably coupled to the second portion. ### Claim 6 (depends on 5) The frame of claim 5, wherein the first portion is to disengage from the second portion via the handle arm to enable the handle arm to rotate relative to the first leg. ### Claim 7 (depends on 6) The frame of claim 6, wherein the first portion includes a plate defining an opening and the second portion includes a pin to be received in the opening, and further including a lever disposed in the first portion, the handle arm to cause to lever to release the pin from the opening. ### Claim 8 (depends on 7) The frame of claim 7, wherein the lever is to cause the opening to slide relative to the pin when a portion of the handle arm engages the lever. ### Claim 9 A frame for use with a stroller, the frame comprising: a first frame member having a first wheel coupled thereto; a second frame member having a second wheel coupled thereto; a third frame member; a first joint to couple the first frame member and the second frame member, the first joint including a lock; and a second joint to couple the second frame member and the third frame member, the second joint operatively coupled to the first joint, the third frame member to rotate via the second joint to release the lock to enable the first frame member to move from an extended position to a collapsed position to fold the frame. ### Claim 10 (depends on 9) The frame of claim 9, further including a cable extending from the second joint to the lock, the cable to displace the lock during rotation of the third frame member. ### Claim 11 (depends on 10) The frame of claim 10, further including a plate disposed in the second joint, the cable to be at least partially wound about the plate, the third frame member to pivot about the plate. ### Claim 12 (depends on 9) The frame of claim 9, wherein the first joint includes a stop, the lock to engage the stop when the first frame member is in the first position. ### Claim 13 (depends on 9) The frame of claim 9, wherein the lock is a first lock and the second joint includes a second lock, the third frame member to slide relative to the second joint to release the second lock to enable the third frame member to rotate. ### Claim 14 (depends on 9) The frame of claim 9, wherein the first joint includes a detent arm and a housing, a protrusion of the housing to engage the detent arm when the first frame member moves to the collapsed position. ### Claim 15 A stroller comprising: a frame including: a front leg; a rear leg; a handle; a first joint to couple the front leg and the rear leg; and a second joint to couple the handle and the rear leg; and a mount bar coupled to the frame proximate to the first joint, the handle to rotate relative to the rear leg via the second joint, the rotation of the handle to enable the front leg to rotate relative to the rear leg via the first joint, the handle to be disposed proximate to the mount bar when the frame is in a folded position. ### Claim 16 (depends on 15) The stroller of claim 15, wherein the mount bar includes a pin, the handle to engage the pin when the frame is in the folded position. ### Claim 17 (depends on 15) The stroller of claim 15, further including a rear wheel coupled to the rear leg, wherein when the frame is in folded position, the rear wheel and a portion of the second joint are to engage a surface on which the frame rests. ### Claim 18 (depends on 17) The stroller of claim 17, further including a front wheel coupled to the front leg, the front wheel to pivot relative to the rear wheel when the frame is in the folded position. ### Claim 19 (depends on 15) The stroller of claim 15, wherein the handle includes an arm and the second joint includes a first portion and second portion, the first portion removably coupled to the second portion, the arm to slide relative to the second joint to release the first portion from the second portion. ### Claim 20 (depends on 15) The stroller of claim 15, further including a tube coupled to the second joint, the tube to extend between a first side of the frame and a second side of the frame, the handle to pivot about the tube.