Abstract: Handtools, typically two screwdrivers with a slotted tip (14) and a crossheaded (Phillips) tip (24), respectively nest together for pocket storage in one compact package without any protruding points or tips. Tip (14) is attached to blade (or shaft) (12) that mounts on handle (or body) (10). Tip (or bit or head) (24) is attached to blade (22) that mounts on handle (20). For storage, the two handtools are placed in opposition and brought together to mate hermaphroditically, with blade (12) entering bore (or hole) (16) in handle (20) and blade (22) entering bore (16) in handle (10). When so nested, both blades and tips are completely covered to protect the user's clothing when stored in a pocket. The resulting package is approximately the same length as a single tool and has the same diameter, yet is easily pulled apart so that both tools become fully usable separately.

Abstract: An electrostatic evacuated insulating sheet comprises two permanently charged electret repulsion layers (18 and 28) laminated to two respective insulating layers (16 and 26), which are in turn laminated to two impermeable metallic compensation layers (14 and 24). The foregoing laminate is then covered by two protective layers (12 and 22). The repulsion layers (18 and 28) are sufficiently charged with monopolar electric charges so that, by Coulomb force, a small (1 to 20 micron) evacuated space is established and maintained between the repulsion layers. This space is sufficient to stop all heat transfer through the sheet by convection or conduction. The resulting vacuum insulated sheet is very thin (1.2 mm to 2.9 mm) and flexible. It provides an greatly improved insulating performance over any previous flexible sheet insulation, equivalent to at least 170 mm of polystyrene foam.

Abstract: A flexible evacuated insulating panel comprises a first flexible external sheet (10) opposing a second flexible external sheet (20), each sheet comprises a plurality of corrugated gas impermeable layers (11) and (21) joined with a gas tight seal (18) to form an internal space that is evacuated of air (19). Spacers (12 and 22) press against a membrane (28) to resist the facewise compressive forces. The evacuated insulating panel is flexible, both in use and in application. As such, the panel may be manually applied to curved surfaces for any high-performance insulator application. The flexible evacuated insulating panel is mass-producible and useful in many different applications without custom design or manufacturing.