US4403968A — Marine transmission gear unit with double drive

Claim 1

Independent Claim 151 words

In a multiple-step marine transmission gear unit with double drive for use with a pair of driving engines arranged on one side of and parallel to the axis of a propeller shaft driven thereby and on both sides of a slow speed main step of a transmission gearing assembly including a single common pinion and a greater gear, the pair of engines arranged to drive the greater gear of the slow speed main step of transmission by way of the single common pinion as the slow speed main step, the invention comprising at least one high speed secondary gear means operably coupled between one of the driving engines and the single common pinion and at least one switching aggregate arranged directly coupled to the slow speed main step between the secondary gear means and the main step, the input from both of said engines being coaxial with said single common pinion.

Claim 2

Dependent Claim 151 words

In a multiple-step marine transmission gear unit with double drive for use with a pair of driving engines arranged on one side of and parallel to the axis of a propeller shaft driven thereby and on both sides of a slow speed main step of a transmission gearing assembly including a single common pinion and a greater gear, the pair of engines arranged to drive the greater gear of the slow speed main step of transmission by way of the single common pinion as the slow speed main step, the invention comprising at least one high speed secondary gear means operably coupled between one of the driving engines and the single common pinion and at least one switching aggregate arranged directly coupled to the slow speed main step between the secondary gear means and the main step, the input from both of said engines being coaxial with said single common pinion.

Claim 3

Dependent Claim 20 words

A multiple-step marine transmission gear unit as claimed in claim 1 wherein said secondary gear means comprises a spur gear.

Claim 4

Dependent Claim 21 words

A multiple-step marine transmission gear unit as claimed in claim 1 wherein said secondary gear means comprises a planetary gear assembly.

Claim 5

Dependent Claim 41 words

A multiple-step marine transmission gear unit as claimed in claim 3, wherein the pair of driving engines includes one slowspeed driving engine and one high speed driving engine and the high speed driving engine is connected with the planetary gear assembly.

Claim 6

Dependent Claim 26 words

A marine transmission gear unit as claimed in claim 4 and an intermediate gear coupling the common pinion with the greater gear of the main step.

Claim 7

Dependent Claim 29 words

A marine transmission gear unit as claimed in claim 5 wherein the intermediate gear is displaced parallel to the center plane of the common pinion and the greater gear.

Claim 8

Dependent Claim 27 words

A marine transmission gear unit as claimed in claim 4 and a pair of branching gear wheels operatively coupled between the common pinion and the greater gear.

Claim 9

Dependent Claim 58 words

A multiple-step marine transmission gear unit as claimed in claim 1 wherein the driving engines are both high-speed engines and said secondary gear means comprise a planetary gear assembly coupled between each driving engine and the single common pinion and said switching aggregate coupled between said planetary gear assembly and the slow speed main step of the transmission.

Claim 10

Dependent Claim 62 words

A multiple-step marine transmission gear unit as claimed in claim 8 wherein said planetary gear assembly comprises a stationary outer central wheel, an inner central wheel and a planetary wheel carrier, said inner central wheel being operably coupled respectively to the driving engine and the planetary wheel carrier with the slow speed main step of transmission by way of the switching aggregate.

Claim 11

Dependent Claim 49 words

A multiple-step marine transmission gear unit as claimed in claim 8 wherein said planetary gear assembly comprises an outer central wheel connected with the single common pinion by way of the switching aggregate, an inner central wheel connected with the respective driving engine and a stationary planetary gear carrier.

Claim 12

Dependent Claim 57 words

A multiple-step marine transmission gear unit as claimed in claim 1 wherein said secondary gear means comprise a planetary gear assembly comprising a stationary outer central wheel, an inner central wheel coupled with the respective driving engine and a stationary planetary wheel carrier with the slow speed main step of transmission by way of said switching aggregate.

Claim 13

Dependent Claim 23 words

A multiple-step marine transmission gear unit as claimed in claim 1, wherein said at least one switching aggregate comprises synchronizing self-switching overriding clutches.

Claim 14

Dependent Claim 67 words

A marine transmission unit as claimed in claim 1 and at least one additional driving engine, at least one additional switching aggregate and at least one additional pinion coupled to the greater gear, said additional driving engine being disposed parallel to the driving engines and to the propeller shaft axis, said additional driving engine being coupled to the additional pinion by way of the additional switching aggregate.

Claim 15

Dependent Claim 57 words

A marine transmission gear as claimed in claim 1 and a pair of additional driving engines arranged, a like number of switching aggregates, an additional secondary gearing assembly and an additional common pinion, the additional driving engines being coupled to the additional common pinion by way of the secondary gear assembly and the pair of switching aggregates.

Claim 16

Dependent Claim 195 words

A multiple-step marine transmission gear unit for double drive including a pair of driving engines, a propeller shaft, propeller means mounted axially to said propeller shaft for rotation therewith, transmission means operatively coupled to said propeller shaft and to said driving engines and including a slow speed main step of transmission gear assembly formed by a greater gear wheel mounted on the propeller shaft and a single common pinion gear engaged with the greater wheel for driving said propeller means, said driving engines arranged on one side of and parallel to said propeller shaft axis and on both sides of said slow speed main step, at least one high speed planetary gear assembly arranged between said slow speed main step and at least one driving engine, and a switching aggregate arranged directly coupled to said single common pinion on both sides of said slow speed main step and operably coupled to said driving engines whereby said slow speed main step of the transmission means is coupled in a direct line to the driving engines by way of the switching aggregates and the input of both of said engines being coaxial with said single common pinion.

Claim 17

Dependent Claim 195 words

A multiple-step marine transmission gear unit for double drive including a pair of driving engines, a propeller shaft, propeller means mounted axially to said propeller shaft for rotation therewith, transmission means operatively coupled to said propeller shaft and to said driving engines and including a slow speed main step of transmission gear assembly formed by a greater gear wheel mounted on the propeller shaft and a single common pinion gear engaged with the greater wheel for driving said propeller means, said driving engines arranged on one side of and parallel to said propeller shaft axis and on both sides of said slow speed main step, at least one high speed planetary gear assembly arranged between said slow speed main step and at least one driving engine, and a switching aggregate arranged directly coupled to said single common pinion on both sides of said slow speed main step and operably coupled to said driving engines whereby said slow speed main step of the transmission means is coupled in a direct line to the driving engines by way of the switching aggregates and the input of both of said engines being coaxial with said single common pinion.

Claim 18

Dependent Claim 20 words

The multiple-step marine transmission unit as claimed in claim 15 in which said switching aggregates comprise synchronizing self-switching overriding clutches.

Claim 19

Dependent Claim 66 words

The multiple-step marine transmission unit as claimed in claim 16 in which said planetary gear assembly comprises inner and outer concentric wheel members and a coaxial planetary wheel carrier, the outer wheel being stationary, the inner wheel being coupled drivingly to the engine and the wheel carrier being directly coupled to the single common pinion gear of the slow speed main step of transmission gear assembly.

Claim 20

Dependent Claim 63 words

The multiple-step marine transmission unit as claimed in claim 16 in which said high speed planetary gear assembly comprises inner and outer concentric wheel members and a coaxial planetary wheel carrier, the outer wheel being rotatable, the inner wheel being coupled drivingly to the engine and the outer wheel being coupled to the single common pinion gear of the slow speed main step.

Claim 21

Dependent Claim 63 words

The multiple-step marine transmission unit as claimed in claim 15 in which said high speed planetary gear assembly comprises inner and outer concentric wheel members and a coaxial planetary wheel carrier, the outer wheel being rotatable, the inner wheel being coupled drivingly to the engine and the outer wheel being coupled to the single common pinion gear of the slow speed main step.

Claim 22

Dependent Claim 60 words

The multiple-step marine transmission unit as claimed in claim 15 in which said planetary gear assembly comprises inner and outer concentric wheel members and a coaxial planetary wheel carrier, the outer wheel being stationary, the inner wheel being coupled drivingly to the engine and the wheel carrier being coupled to the common pinion gear of the slow speed main step.

Claim 23

Dependent Claim 128 words

In a multiple-step marine transmission gear unit for coupling a pair of driving engines to the axis of a propeller for driving same by way of a slow speed main drive gear and a single common pinion gear engaged therewith, the invention comprising, high speed secondary gear means operatively coupled to at least one of said driving engines, the single common pinion gear being common to both driving engines and drivably engaged with the slow speed main drive gear, said high speed secondary gear means coupled between said single common pinion and at least one of said driving engines, overriding clutch means coupled directly to each driving engine and said single common pinion, and the input from both of said engines being coaxial with said single common pinion.

Claim 24

Dependent Claim 128 words

In a multiple-step marine transmission gear unit for coupling a pair of driving engines to the axis of a propeller for driving same by way of a slow speed main drive gear and a single common pinion gear engaged therewith, the invention comprising, high speed secondary gear means operatively coupled to at least one of said driving engines, the single common pinion gear being common to both driving engines and drivably engaged with the slow speed main drive gear, said high speed secondary gear means coupled between said single common pinion and at least one of said driving engines, overriding clutch means coupled directly to each driving engine and said single common pinion, and the input from both of said engines being coaxial with said single common pinion.

Claim 25

Dependent Claim 22 words

A multiple-step marine transmission gear unit as claimed in claim 21 wherein said high-speed secondary gear means comprise a planetary gear assembly.

Claim 26

Dependent Claim 45 words

A multiple-step marine transmission as claimed in claim 22, wherein said planetary gear assembly includes inner and outer concentric coaxial wheels and a planetary wheel carrier, the outer wheel being coupled to said switching aggregate and the inner wheel being coupled to said driving engine.

Claim 27

Dependent Claim 22 words

A multiple-step marine transmission gear unit as claimed in claim 21 wherein said high speed secondary gear means comprise a spur gear.

Claim 28

Dependent Claim 160 words

In a multiple-step marine transmission gear unit with double drive where two driving engines are arranged on one side of and parallel to the propeller shaft axis and on both sides of a slow speed gearing transmission assembly having a single common pinion and a greater wheel, the invention comprising in combination, the greater wheel and said single common pinion as the slow speed main step, at least one high speed additional gear assembly operatively coupled to at least one associated driving engine as a preceding step, and two switching aggregates arranged directly before the slow speed main step and parallel to the driving engines and the propeller shaft axis, at least one of the driving engines connected by way of one of said switching aggregates to the single common pinion and the single common pinion operably coupling the two driving engines to the greater wheel, the input of both of said engines being coaxial with said single common pinion.

Claim 29

Dependent Claim 160 words

In a multiple-step marine transmission gear unit with double drive where two driving engines are arranged on one side of and parallel to the propeller shaft axis and on both sides of a slow speed gearing transmission assembly having a single common pinion and a greater wheel, the invention comprising in combination, the greater wheel and said single common pinion as the slow speed main step, at least one high speed additional gear assembly operatively coupled to at least one associated driving engine as a preceding step, and two switching aggregates arranged directly before the slow speed main step and parallel to the driving engines and the propeller shaft axis, at least one of the driving engines connected by way of one of said switching aggregates to the single common pinion and the single common pinion operably coupling the two driving engines to the greater wheel, the input of both of said engines being coaxial with said single common pinion.

Claim 30

Dependent Claim 60 words

A multiple-step marine transmission gear unit as claimed in claim 25 in which parallel to the two driving engines and to the propeller shaft axis there is arranged at least another driving engine operatively connected by way of at least one other high speed planetary gear assembly and at least an associated switching aggregate coupled to another single common pinion.

Claim 31

Dependent Claim 25 words

A multiple-step marine transmission gear unit as claimed in claim 25 in which said high speed additional assembly gear unit comprises a planetary gear assembly.

Claim 32

Dependent Claim 23 words

A multiple-step marine transmission gear unit as claimed in claim 25 in which said high speed additional gear assembly comprises a spur gear.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1986-09-12	1987-03-14	1987-09-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1990-09-12	1991-03-14	1991-09-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1994-09-12	1995-03-14	1995-09-13	$7700.00	Window Closed / Lapsed

Marine transmission gear unit with double drive

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag