"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4118996 | Reversing gear in particular for a Z-drive for watercrafts An improvement in a clutch control of a reversing gear arrangement for a Z-drive for watercrafts. The reversing clutch coupling includes two beveled pinion gears which act onto a common driven bevel gear. The reversing coupling consists of two alternately... | 10/10/1978 |
| 4050849 | Hydrodynamic transmission for ship propulsion The present invention relates to a hydrodynamic transmission for ship propulsion comprising a prime mover driving an axial flow pump in combination with an open, water-powered turbine for driving propeller blades. The power plant and the propeller are not... | 09/27/1977 |
| 4037558 | Marine drive units The invention provides a marine drive unit of the through or over transom drive type, in which the power leg is pivoted on the axis of a transverse shaft at the heart of the drive transmission so that the power leg can tilt upwardly and rearwardly about t... | 07/26/1977 |
| 4027553 | Angle gear drive arrangement An angle gear drive arrangement for a steerable propeller on a watercraft or other type of vehicle in which a driven shaft is supported in a gear housing and is driven by a pair of bevel gears. The driven bevel gear of the pair of bevel gears is mounted o... | 06/07/1977 |
| 3977356 | Stern drive unit and transmission therefor Disclosed herein is a stern drive unit comprising a bracket adapted to be fixed relative to a boat hull, an intermediate portion supported by trunnions from the bracket for movement about a tilt axis, a steerable part which carries a propeller and which i... | 08/31/1976 |
| 3968767 | Marine propulsion device adapted for a sailboat Disclosed herein is a marine propulsion device comprising an engine including a bottom face with an exhaust gas passage port, together with a lower unit connected to the bottom face and including a side surface, and an exhaust gas passage communicating wi... | 07/13/1976 |
| 3962985 | Twin-shaft type propulsion arrangement for a tug boat A twin-shaft Z type propelling arrangement for a tug boat comprises a variable slip transmission, such as a friction clutch provided between the main engine and the Z type propelling mechanism of the boat, and a mechanism for providing variable amount of ... | 06/15/1976 |
| 3954083 | Twin-propeller stern drive Twin-propeller stern drive propulsion unit having automatic thrust alignment trim and retractable hydrofoils for improved shallow water operation. Retention of optimum thrust direction is accomplished automatically by parallel geometry action of a cross-p... | 05/04/1976 |
| 3952687 | Marine drive An outboard drive for a marine engine includes an upper unit mounted through the transom of the boat and a lower steerable leg which includes the propeller shaft. A pivot point in the upper unit is inside the boat. The drive unit is rotatable about this p... | 04/27/1976 |
| 3951096 | Marine drive system An improved, belt-driven stern drive for boats of the type sometimes referred to as an "inboard-outboard" or a "through-transom" drive. The invention includes a wide, thin, highly-tensioned power drive belt disposed in a housing having an upper power inpu... | 04/20/1976 |
| 3931783 | Oil circulating system for marine propulsion gear case A marine propulsion drive mounted to a boat transom includes a vertical drive shaft and a horizontal propeller shaft coupled by a pair of bevel gears in an oil filled lower housing unit. The vertical shaft is supported in vertically spaced bearings, one o... | 01/13/1976 |