Abstract: A silica aerogel having a mean pore size less than 5 nm with a standard deviation of 3 nm. The silica aerogel may have greater than 95% solar-weighted transmittance at a thickness of 8 mm for wavelengths in the range of 250 nm to 2500 nm, and a 400° C. black-body weighted specific extinction coefficient of greater than 8 m2/kg for wavelengths of 1.5 ?m to 15 ?m. Silica aerogel synthesis methods are described. A solar thermal aerogel receiver (STAR) may include an opaque frame defining an opening, an aerogel layer disposed in the opaque frame, with at least a portion of the aerogel layer being proximate the opening, and a heat transfer fluid pipe in thermal contact with and proximate the aerogel layer. A concentrating solar energy system may include a STAR and at least one reflector to direct sunlight to an opening in the STAR.

Abstract: A crimping and cutting assembly includes a first roller engaged with a second roller including a honeycomb pattern of polygonal crimping and cutting members. Various transversely spaced, internally filled dough ropes are fed between the first and second rollers, causing each rope to be continuously crimped and cut at longitudinally spaced locations to create multi-sided food products, specifically polygonal food products having two to six crimped and cut sides. The ropes can permissibly shift or wander laterally during production, resulting in slightly different size or shape food products, while the honeycomb pattern acts to re-align the ropes so as to be tolerant to the ropes wandering while still preventing puncturing of the ropes which could lead to loss of filling and extended production downtime.

Abstract: A crimping and cutting assembly includes a first roller engaged with a second roller including a honeycomb pattern of polygonal crimping and cutting members. Various transversely spaced, internally filled dough ropes are fed between the first and second rollers, causing each rope to be continuously crimped and cut at longitudinally spaced locations to create multi-sided food products, specifically polygonal food products having two to six crimped and cut sides. The ropes can permissibly shift or wander laterally during production, resulting in slightly different size or shape food products, while the honeycomb pattern acts to re-align the ropes so as to be tolerant to the ropes wandering while still preventing puncturing of the ropes which could lead to loss of filling and extended production downtime.

Abstract: This invention is a luggage construction allowing luggage to be slid, rather than the carried or dragged, up and down stairs. The essence of this invention is the combination of a super extendable/angleable pull handle, fixable in the angled position, with a smooth sliding surface on the stair resting face of the luggage body. The handle, super extended and locked in the angled position, is capable of being gripped comfortably by the user at hip level as the bag is being slid up the stairs. The smooth sliding surface removes protrusions from the bag face which slides along the points of the stairs. A brake device is added to prevent the bag from sliding out of control if it is accidentally released by the user.

Abstract: A rotary cutter assembly (11) includes a rotary cutter (74) rotated by a motor (76) through a drive including pulleys (250, 264) and a belt (326) inside of a combination guard and belt tensioner assembly (260). The rotary cutter (74) includes a cutter head (82) having integral blade holders (92) which slideably receive knives (90) in a channel (230) each having a detent (236) which is received in an aperture (91) in the knife (90) so that no fasteners or moveable parts are provided for holding the knives (90) and adjustment of the knives (90) is not needed or allowed. Guard quarters (266, 314) and a guard half (268) are moveable between closed and open positions and are held in the closed position by a single latch (325). The guard half (268) includes an idler (300) which tensions the belt (326) in the closed position.