Movable rack assembly for a wood burning grill

A movable rack assembly for a wood burning grill comprising:

• an input shaft extending along an input axis to rotate thereabout, the input shaft comprising a worm gear segment disposed along the input axis between a first end and a second end;
• a hand wheel rotationally fixed to the input shaft to rotate therewith about the input axis;
• a driven gear enmeshed with the worm gear segment, the driven gear defining a maximum outer circumference and being rotatable about a driven axis nonparallel to the input axis;
• an adjustable rack in mechanical communication with the driven gear to move therewith;
• an interference plate fixed to the driven gear to rotate therewith about the driven axis, the interference plate comprising a radial arm extending past the maximum outer circumference of the driven gear;
• and
• a contact tab extending from the input shaft to rotate therewith about the input axis, the contact tab being axially offset from the worm gear segment in selective engagement with the radial arm at a predefined travel limit of the driven gear to halt rotation at the input shaft, the contact tab extending radially relative to the input axis at a location radially offset from the input axis to engage an axial face of the radial arm,
• wherein the worm gear segment and the driven gear define a gearing ratio of the worm gear segment to the driven gear greater than 1:1.

A movable rack assembly for a wood burning grill comprising:

• an input shaft extending along an input axis to rotate thereabout, the input shaft comprising a worm gear segment disposed along the input axis between a first end and a second end;
• a hand wheel rotationally fixed to the input shaft to rotate therewith about the input axis;
• a driven gear enmeshed with the worm gear segment, the driven gear defining a maximum outer circumference and being rotatable about a driven axis nonparallel to the input axis;
• an adjustable rack in mechanical communication with the driven gear to move therewith;
• an interference plate fixed to the driven gear to rotate therewith about the driven axis, the interference plate comprising a radial arm extending past the maximum outer circumference of the driven gear;
• a contact tab extending from the input shaft to rotate therewith about the input axis, the contact tab being axially offset from the worm gear segment in selective engagement with the radial arm at a predefined travel limit of the driven gear to halt rotation at the input shaft, the contact tab extending radially relative to the input axis at a location radially offset from the input axis to engage an axial face of the radial arm;
• a driven rod mounted coaxially with the driven gear;
• a primary drive arm fixed to the driven rod to rotate therewith about the driven axis, the primary drive arm extending from a first pivot end at the adjustable rack to a second pivot end at the driven rod;
• and
• a secondary support bar extending from a first pivot end at the adjustable rack to second pivot end at an idler pin spaced apart from the driven rod,
• wherein the worm gear segment and the driven gear define a gearing ratio of the worm gear segment to the driven gear greater than 1:1,
• wherein the radial arm is a first radial arm, and wherein the interference plate further comprises a second radial arm extending past the maximum outer circumference of the driven gear, the second radial arm being circumferentially spaced apart of the first radial arm,
• wherein the worm gear segment defines a minimum outer circumference, and
• wherein the contact tab extends past the minimum outer circumference of the worm gear segment.