초록 ▼

Disclosed is a trailer hitch system that is configured to rotate to a stowing position and an operating position. When in the operational position, a coupler arm of the trailer is aligned with the longitudinal axis of the trailer so that the coupler arm contributes to the length of the trailer. Whe

Disclosed is a trailer hitch system that is configured to rotate to a stowing position and an operating position. When in the operational position, a coupler arm of the trailer is aligned with the longitudinal axis of the trailer so that the coupler arm contributes to the length of the trailer. When in the stowing position, the coupler arm of the trailer is bent at an angle relative to the longitudinal axis of the trailer so that the coupler arm does not contribute to the overall length of the trailer.

대표청구항 ▼

The invention claimed is: 1. A boat trailer, comprising: a support section comprising a frame; a coupler arm having a front end and a rear end, wherein the front end of the coupler arm is configured for attachment to a towing vehicle, wherein at least one molded knuckle is positioned adjacent a fir

The invention claimed is: 1. A boat trailer, comprising: a support section comprising a frame; a coupler arm having a front end and a rear end, wherein the front end of the coupler arm is configured for attachment to a towing vehicle, wherein at least one molded knuckle is positioned adjacent a first side of the rear end of the coupler arm, the knuckle comprising an elongate, internal shaft and having an internal cavity; a front arm having a front end and a rear end, wherein the rear end of the front arm is configured for attachment to the support section, wherein at least one molded knuckle is positioned adjacent a first side of the front end of the front arm, the knuckle comprising an elongate, internal shaft and having an internal cavity; and a hinge region, wherein the coupler arm knuckle co-axially aligns with the front arm knuckle such that the elongate, internal shafts form common rotation channels sized to receive a rotator pin at the hinge region, wherein the coupler arm can pivot about an axis of the rotator pin between (1) an operating position wherein the coupler arm and front arm share a common longitudinal axis, and (2) a stow position wherein the coupler arm is oriented transverse to the front arm; wherein the internal cavities have shapes that correspond to an outer shape of the knuckles. 2. The boat trailer of claim 1, wherein the front arm includes a hollow space and wherein the internal cavity communicates with the hollow space. 3. The boat trailer of claim 1, wherein each of the knuckles has an annular wall surrounding the respective shafts, and wherein at least a portion of the annular wall increases in thickness relative to a remainder of the annular wall to provide increased structural support. 4. The boat trailer of claim 1, wherein each of the knuckles has an outer wall that slopes toward a side surface of the respective front arm and coupler arm. 5. A trailer hitch system, comprising: a front arm adapted to extend forwardly from a trailer comprising at least one molded knuckle positioned adjacent a first side of a front end of the front arm, the knuckle comprising a first elongated, internal shaft and having an internal cavity; a coupler arm adapted to be hitched to a towing vehicle at a front end of the coupler arm comprising at least one molded knuckle positioned adjacent a first side of a rear end of the coupler arm, the knuckle comprising a second elongated, internal shaft and having an internal cavity; and a hinge region, wherein the first and second shafts are co-axially aligned forming a common rotation channel sized to receive a rotator pin, wherein the coupler arm can rotate about an axis of the rotator pin positioned in the channel between (1) an operating position wherein the front arm and the coupler arm share a common longitudinal axis, and (2) a stow position wherein the coupler arm is oriented transverse to the front arm; wherein the internal cavities have shapes that correspond to an outer shape of the knuckles. 6. The trailer hitch system of claim 5, wherein the front arm includes a hollow space and wherein the internal cavity communicates with the hollow space. 7. The trailer hitch system of claim 5, wherein each of the knuckles has an annular wall surrounding the respective shafts, and wherein at least a portion of the annular wall increases in thickness relative to a remainder of the annular wall to provide increased structural support. 8. The trailer hitch system of claim 5, wherein each of the knuckles has an outer wall that slopes toward a side surface of the respective front arm and coupler arm. 9. A boat trailer, comprising: a support section comprising a frame; a coupler arm having a front end and a rear end, wherein the front end of the coupler arm is configured for attachment to a towing vehicle, wherein at least one molded knuckle is positioned adjacent a first side of the rear end of the coupler arm, the knuckle comprising an elongate, internal shaft and having an internal cavity; a front arm having a front end and a rear end, wherein the rear end of the front arm is configured for attachment to the support section, wherein at least one molded knuckle is positioned adjacent a first side of the front end of the front arm, the knuckle comprising an elongate, internal shaft and having an internal cavity; and a hinge region, wherein the coupler arm knuckle co-axially aligns with the front arm knuckle such that the elongate, internal shafts form common rotation channels sized to receive a rotator pin at the hinge region, wherein the coupler arm can pivot about an axis of the rotator pin between (1) an operating position wherein the coupler arm and front arm share a common longitudinal axis, and (2) a stow position wherein the coupler arm is oriented transverse to the front arm; wherein the front arm includes a hollow space and wherein the internal cavity communicates with the hollow space. 10. A trailer hitch system, comprising: a front arm adapted to extend forwardly from a trailer comprising at least one molded knuckle positioned adjacent a first side of a front end of the front arm, the knuckle comprising a first elongated, internal shaft and having an internal cavity; a coupler arm adapted to be hitched to a towing vehicle at a front end of the coupler arm comprising at least one molded knuckle positioned adjacent a first side of a rear end of the coupler arm, the knuckle comprising a second elongated, internal shaft and having an internal cavity; and a hinge region, wherein the first and second shafts are co-axially aligned forming a common rotation channel sized to receive a rotator pin, wherein the coupler arm can rotate about an axis of the rotator pin positioned in the channel between (1) an operating position wherein the front arm and the coupler arm share a common longitudinal axis, and (2) a stow position wherein the coupler arm is oriented transverse to the front arm; wherein the front arm includes a hollow space and wherein the internal cavity communicates with the hollow space.