Expandable joint and universal fit headband
An expandable joint for use in, for example, a headband, includes elastic material, a low-friction sleeve, and a tube. The low-friction sleeve covers at least two opposing sides of a portion of the length of elastic material. The length of elastic material is affixed to the low-friction sleeve at a first end of the low-friction sleeve or a point adjacent to the first end of the low-friction sleeve. The length of elastic material extends beyond a second end of the low-friction sleeve opposite the first end of the low-friction sleeve. The tube substantially encloses the low-friction sleeve. The low-friction sleeve is affixed to the tube at the first end of the low-friction sleeve or a point adjacent to the first end of the low-friction sleeve, and the length of elastic material extends beyond a first end of the tube.
1. A band operable to automatically adjust to a size within a range of sizes, said band comprising:
a length of elastic material having a first end and a second end opposite the first end;
a first low-friction sleeve covering at least two opposing sides of a first portion of the length of elastic material adjacent the first end of the length of elastic material; and
a second low-friction sleeve covering at least two opposing sides of a second portion of the length of elastic material adjacent the second end of the length of elastic material;
a tube having a first end and a second end opposite the first end, wherein the first end is at least partially open and the second end is at least partially open;
wherein:
the first low-friction sleeve is affixed to the tube adjacent the first end of the tube;
the second low-friction sleeve is affixed to the tube adjacent the second end of the tube;
the first low-friction sleeve is substantially enclosed by the tube within the first end; and
the second low-friction sleeve is substantially enclosed by the tube within the second end.
2. The band of claim 1 , wherein:
the first end of the length of elastic material or a point adjacent to the first end of the length of elastic material is affixed to the first low-friction sleeve at a first end of the first low-friction sleeve or a point adjacent to the first end of the first low-friction sleeve;
the second end of the length of elastic material or a point adjacent to the second end of the length of elastic material is affixed to the second low-friction sleeve at a first end of the second low-friction sleeve or a point adjacent to the first end of the second low-friction sleeve;
the first portion of the length of elastic material is approximately 1 inch long; and
the second portion of the length of elastic material is approximately 1 inch long.
3. The band of claim 1 , wherein:
the first low-friction sleeve is affixed to the tube at a first end of the first low-friction sleeve or a point adjacent to the first end of the first low-friction sleeve; and
the second low-friction sleeve is affixed to the tube at a first end of the second low-friction sleeve or the point adjacent to the first end of the second low-friction sleeve.
4. The band of claim 1 , wherein:
the first low-friction sleeve is affixed to the tube at a first end of the first low-friction sleeve or a point adjacent to the first end of the first low-friction sleeve;
the second low-friction sleeve is affixed to the tube at a first end of the second low-friction sleeve or the point adjacent to the first end of the second low-friction sleeve;
a second end of the first low-friction sleeve opposite the first end of the first low-friction sleeve is set back from the first end of the tube by approximately ⅛ of an inch; and
a second end of the second low-friction sleeve opposite the first end of the second low-friction sleeve is set back from the second end of the tube by approximately ⅛ of an inch.
5. The band of claim 1 , wherein the tube comprises a length of a first material having a first edge opposite a second edge of the first material and a length of a second material having a first edge opposite a second edge of the second material, wherein the first edge of the first material is affixed to the first edge of the second material and the second edge of the first material is affixed to the second edge of the second material, and wherein the first material is a decorative fabric and the second fabric is velvet.
6. The band of claim 1 , wherein the band is a headband.