# US 11,440,599 B2 · Fifth wheel hitch comfort system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,599 B2 - Document ID: US11440599B2 - Status: Granted - Kind: B2 - Application number: 16/615,876 - Filed: 2018-05-23 - Published: 2020-07-30 - Granted: 2022-09-13 - Earliest claimed: 2017-05-23 - Assignees: Horizon Global Americas Inc. - Applicants: Horizon Global Americas Inc. - Inventors: Mark Scruggs; Curt Nowack; Derek Jolly; Gregoire Mercier - Web page: https://patentgrep.com/patent/US11440599B2 ## CPC - B60D 1/488: {mounted directly to the chassis of the towing vehicle} - B60D 1/48: characterised by the mounting - B62D 53/0807: {adjustable coupling saddles mounted on sub-frames; Mounting plates therefor} - B62D 53/0842: {King pins} - B62D 53/10: with means for preventing accidental uncoupling - B60D 1/01: Traction couplings or hitches characterised by their type - B60D 1/52: removably mounted - B62D 53/00: Tractor-trailer combinations; Road trains (traction couplings other than fifth wheel coupling B60D {; tracked vehicles comprising at least two articulated parts B62D55/0655}) - B62D 53/04: comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle - B60D: VEHICLE CONNECTIONS - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) ## Abstract A fifth wheel hitch assembly for mounting to a towing vehicle and receiving a kingpin of a trailer incorporating a comfort assembly is provided. The fifth wheel hitch assembly may comprise a kingpin receiving assembly attached to a mounting rail via a comfort assembly. The comfort assembly may include one or more pivot bushing assemblies, as well as vertically adjustable, anti-rattle attachment systems. These attachment systems may include a cam assembly and/or a T-pin assembly. ## Claims ### Claim 1 A vertically adjustable, anti-rattle attachment assembly for connecting a fifth wheel hitch to a vehicle mounting rail having a side connection aperture and a mounting slot on a top facing of the mounting rail, the attachment assembly comprising: an attachment bolt having a foot end and an opposing upper end, said bolt received through an aperture in a base plate associate with the fifth wheel hitch; wherein the foot end includes a loop with opposing flattened faces, said flattened faces cooperating to be received within the mounting slot so that a pull pin, when inserted through the side connection aperture proximate to the mounting rail, passes through the loop; and wherein the upper end includes a threaded portion to receive a fastener, said fastener being selectively coupled to the threaded portion so as to adjust a vertical positioning of the assembly. ### Claim 2 (depends on 1) The attachment assembly of claim 1 further comprising a cam lever having a cam barrel rotatable in response to movement of the cam lever and wherein the attachment bolt passes through the cam barrel so that the cam barrel is positioned between the fastener and the base plate. ### Claim 3 (depends on 2) The attachment assembly of claim 2 wherein the cam lever includes a looped protrusion having flattened faces cooperating to be received by a second mounting slot on a top facing of the mounting rail proximate to the mounting slot so that a second pull pin, when inserted through a second side connection aperture proximate to the second mounting slot, passes through the looped protrusion. ### Claim 4 (depends on 2) The attachment assembly of claim 2 wherein the cam barrel is integrated as a single piece with the fastener. ### Claim 5 (depends on 1) The attachment assembly of claim 1 further comprising a faucet knob engaging the fastener so as to rotate in concert therewith. ### Claim 6 A vertically adjustable, anti-rattle attachment assembly for connecting a fifth wheel hitch to a vehicle mounting rail having a side connection aperture and a central mounting slot on a top facing of the mounting rail, the attachment assembly comprising: a T-pin having a foot end and an opposing upper end, said T-pin received through an aperture in a base plate associate with the fifth wheel hitch; wherein the foot end includes an elongated base having a pair of opposing shoulder, said shoulders cooperating to be received within the mounting slot and sized so as to allow for rotation of the elongated base within an inner channel along an underside of the mounting rail; wherein a pull pin is selectively received through the side connection aperture proximate to the mounting rail, said pull pin engaging the elongated base to prevent rotation of the T-pin; and wherein the upper end includes a threaded portion to receive a fastener, said fastener being selectively coupled to the threaded portion so as to adjust a vertical positioning of the assembly. ### Claim 7 (depends on 6) The attachment assembly of claim 6 further comprising a handle assembly having a keyway aperture, said keyway aperture receiving the upper end of the T-pin. ### Claim 8 (depends on 7) The attachment assembly of claim 7 wherein the keyway aperture is integrated as a single piece with the fastener. ### Claim 9 (depends on 7) The attachment assembly according to claim 7, wherein the handle includes a second aperture that receives a locking pin to prevent rotation of the handle when the locking pin is inserted in the second aperture. ### Claim 10 (depends on 7) The attachment assembly of claim 7, wherein the keyway engages the upper end to selectively rotate the T-pin so as to secure the elongated based in the mounting rail.