Rotary adjustment mechanism

A seat comprising:

• a base;
• a seat back pivotally attached to the base;
• a rod secured to the base;
• a first gear positioned along the rod and rotationally attached to the base;
• a second gear positioned along the rod and rotationally attached to the seat back;
• a locking gear moveable along the rod from a first position coupling the first gear with the second gear and rotationally locking the seat back to the base, to a second position decoupling the first gear with the second gear and allowing relative rotation between the seat back and the base;
• a first spring biasing the locking gear towards the first position;
• and
• a release having a slider, the slider slidably disposed along the rod and coupled to the locking gear, and selectively moving the locking gear with the slider to the second position.

A method of providing a rotary adjustment mechanism comprising the steps of:

• providing a first member;
• securing a rod to the first member;
• rotationally attaching a first gear to the first member along the rod;
• pivotally attaching a second member to the first member;
• rotationally attaching a second gear to the second member along the rod;
• providing a locking gear moveable along the rod from a first position coupling the first gear with the second gear and rotationally locking the second member to the first member, to a second position decoupling the first gear with the second gear and allowing relative rotation between the second member and the first member;
• biasing the locking gear towards the first position;
• and
• coupling a release having a slider slidably disposed along the rod and coupled to the locking gear that selectively moves the locking gear to the second position with the slider.