U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"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

Newsletter  PatentStorm News

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.

 

Class 440/75 - Having transmission


Subclass of Class 440 - Marine propulsion
Definition: Device wherein a means is provided which is interposed between
No. of patents: 371
Last issue date: 05/29/2012


                  10  
NumberTitleIssue Date
4118996Reversing 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
4050849Hydrodynamic 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
4037558Marine 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
4027553Angle 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
3977356Stern 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
3968767Marine 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
3962985Twin-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
3954083Twin-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
3952687Marine 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
3951096Marine 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
3931783Oil 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
                  10  
 
Sign InRegister
Username  
Password   
forgot password?