# US 11,077,000 B2 · Track assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,000 B2 - Document ID: US11077000B2 - Status: Granted - Kind: B2 - Application number: 16/713,988 - Filed: 2019-12-13 - Published: 2020-06-18 - Granted: 2021-08-03 - Earliest claimed: 2018-12-18 - Assignees: Stryker Corporation - Applicants: Stryker Corporation - Inventors: Caitlin Marie Braun; Brandon David Naber; Levi Joseph Scheenstra; Michael Joseph Hernandez - Web page: https://patentgrep.com/patent/US11077000B2 ## CPC - A61G 3/0254: {by moving the stretcher on a horizontal path, e.g. sliding or rolling} - A61G 3/029: {by powered support} - A61G 3/0883: {by preventing lateral movement, e.g. tracks} - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) ## Abstract A track assembly for mounting a movable object includes a track having a web and at least one flange joined with the web. A stop assembly is mounted to the track at the web by a releasable connection and configured to engage the flange to form a moment restraint for the connection of the stop assembly to the web. ## Claims ### Claim 1 A track assembly for mounting a movable object, the track assembly comprising: a track, the track having a web and at least one flange joined with the web; and a stop assembly mounted to the track at the web by a connection, and the stop assembly configured to engage the flange to provide a moment restraint for the stop assembly via the flange of the track. ### Claim 2 (depends on 1) The track assembly according to claim 1, wherein the stop assembly is mechanically coupled to the flange. ### Claim 3 (depends on 2) The track assembly according to claim 2, wherein the flange comprises an upper flange, and the track having a lower flange joined with the web, wherein the stop assembly is engaged with the lower flange. ### Claim 4 (depends on 3) The track assembly according to claim 3, wherein the stop assembly is mechanically coupled to the lower flange. ### Claim 5 (depends on 1) The track assembly according to claim 1, wherein the stop assembly includes a bumper and a dead stop member, the dead stop member being mounted to the web through the bumper. ### Claim 6 (depends on 5) The track assembly according to claim 5, wherein the bumper includes a slot to receive the web, and the bumper straddling the web when the stop assembly is mounted to the web. ### Claim 7 (depends on 6) The track assembly according to claim 6, wherein the bumper includes a base and a bearing member cantilevered from the base. ### Claim 8 (depends on 7) The track assembly according to claim 7, wherein the bearing member is cantilevered from the base by a bumper arm, the dead stop member straddling the bumper arm when mounted to the track. ### Claim 9 (depends on 8) The track assembly according to claim 8, wherein the flange comprises an upper flange, and the track having a lower flange joined with the web, and the dead stop member engaging the upper and lower flanges. ### Claim 10 (depends on 9) The track assembly according to claim 9, wherein the upper and lower flanges have a fixed spacing, the dead stop member having a height greater than the fixed spacing, and the upper and lower flanges having notches to allow the dead stop member to be engaged with the upper and lower flanges through the notches. ### Claim 11 (depends on 1) The track assembly according to claim 1, wherein the web has a terminal edge, the connection being formed by a fastener, the fastener having a fastener spacing to the terminal edge of the web, and the stop assembly configured to transfer sufficient forces from the web to the flange wherein the fastener spacing is less than a minimum edge distance without compromising the web. ### Claim 12 A track assembly comprising: a track; and a stop assembly mounted to the track, the stop assembly having a bumper and a dead stop member, the bumper including a base and a bearing member cantilevered from the base by a bumper arm, and the dead stop member straddling the bumper arm when mounted to the track. ### Claim 13 (depends on 12) The track assembly according to claim 12, wherein the track includes a web and a flange extending from the web, and the stop assembly mounted to the web. ### Claim 14 (depends on 13) The track assembly according to claim 13, wherein the dead stop member is mounted to the web and engages the flange to transfer forces to the flange. ### Claim 15 (depends on 12) The track assembly according to claim 12, in combination with an ambulance cot loading and unloading apparatus, the ambulance cot loading and unloading apparatus including a base for mounting to an emergency vehicle deck, and the track being mounted to the base. ### Claim 16 (depends on 15) The track assembly according to claim 15, the ambulance cot loading and unloading apparatus further including a trolley configured to support an emergency cot, the trolley mounted for linear movement along the track from a retracted position to an extended position. ### Claim 17 (depends on 16) The track assembly according to claim 16, wherein the trolley includes at least one roller for engaging the track, and the track including a rod forming the bearing surface for the roller of the trolley, and the rod at least bearing on the stop assembly. ### Claim 18 (depends on 17) The track assembly according to claim 17, wherein the rod is coupled to the stop assembly. ### Claim 19 A track assembly for mounting a movable object, the track assembly comprising: a track, the track having a web and at least one flange joined with the web; and a stop assembly mounted to the track at the web by a fastener, the fastener having a property, the stop assembly having a bumper and a dead stop member, the dead stop member engaging the web through the bumper and having a bearing surface, the fastener extending through the dead stop member and through the bearing surface to engage the web, and the bearing surface having a ratio to the property in a range of 18 to 27, optionally 39 to 40, or optionally greater than 40. ### Claim 20 (depends on 19) The track assembly according to claim 19, wherein the property is a property selected from the group consisting of a diameter, a cross-sectional area, and a shear capacity.