초록 ▼

New electric boat designs are provided that exploit the weight of a battery to stabilize the boat and in some cases to overcome the hull speed limitation problem. The battery mass is enclosed in one or two torpedo-like structures that are mostly or completely submerged. A platform is spaced above th

New electric boat designs are provided that exploit the weight of a battery to stabilize the boat and in some cases to overcome the hull speed limitation problem. The battery mass is enclosed in one or two torpedo-like structures that are mostly or completely submerged. A platform is spaced above the torpedo(s) via one or more struts that may allow wave energy to pass through the watercraft rather than collide with large vertical surfaces. The design minimizes wake formation, wave sensitivity and is useful for new kinds of electric boats that can dive with an air bubble to allow submarine use, higher speed pleasure craft, and sailing craft that can remain stable in shallow draft waters. The stabilized watercraft optionally have computer monitoring of wave activity and control for greater resistance to adverse weather conditions.

대표청구항 ▼

New electric boat designs are provided that exploit the weight of a battery to stabilize the boat and in some cases to overcome the hull speed limitation problem. The battery mass is enclosed in one or two torpedo-like structures that are mostly or completely submerged. A platform is spaced above th

New electric boat designs are provided that exploit the weight of a battery to stabilize the boat and in some cases to overcome the hull speed limitation problem. The battery mass is enclosed in one or two torpedo-like structures that are mostly or completely submerged. A platform is spaced above the torpedo(s) via one or more struts that may allow wave energy to pass through the watercraft rather than collide with large vertical surfaces. The design minimizes wake formation, wave sensitivity and is useful for new kinds of electric boats that can dive with an air bubble to allow submarine use, higher speed pleasure craft, and sailing craft that can remain stable in shallow draft waters. The stabilized watercraft optionally have computer monitoring of wave activity and control for greater resistance to adverse weather conditions. y said spool members within their spool chambers, said piston having i) a first piston end and a second piston end, said first and said second piston ends defining, with said first and said second chamber ends, a first chamber and a second chamber, respectively, in said main piston chamber during reciprocation of said piston, ii) an annular groove along an outer periphery of the piston member between said first and second piston ends, said groove defining a movable annular piston chamber located in said main piston chamber between said first and said second chamber ends, iii) a first piston passage connecting said annular piston chamber to said first chamber and a second piston passage connecting said annular piston chamber to said second piston chamber; and iv) a first seal disposed circumferentially on the periphery of said first piston end and a second seal disposed circumferentially on the periphery of said second piston end, said first and second seals separating said annular piston chamber from said first and second chambers, respectively, d) wherein said first seal forms a first value in said first piston passage and said second seal forms a second valve in said second piston passage, such that while said piston reciprocates within said main piston chamber, said first valve and said se