Marine reversing gearing

Claim 2

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; the first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable and disengageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; and said slow rotating auxiliary drive being connected by means of said reverse movement blocking device with said drive shaft for engaging and disengaging the forward and reverse clutches.

Claim 3

The marine reversing gearing as defined in claim 1, wherein: said reversing gear set comprises a first central reversing gear by means of which said at least one reverse clutch can be coupled with the pinion of the first gearing stage; a second central reversing gear; a number of peripheral reversing gears; and said first central reversing gear being connected by said number of peripheral reversing gears with said second central reversing gear.

Claim 4

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; the first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; said slow rotating auxiliary drive being connected by means of said reverse movement blocking drive with said drive shaft for engaging and disengaging the forward and reverse clutches; said reversing gear set comprises a first central reversing gear by means of which said at least one reverse clutch can be coupled with the pinion of the first gearing stage; a second central reversing gear; a number of peripheral reversing gears; said first central reversing gear being connected by said number of peripheral reversing gears with said second central reversing gear; a second reverse clutch for coupling the second central reversing gear with the drive shaft; one of both central reversing gears meshing with two mutually parallel stationarily mounted intermediate gears; said number of peripheral reversing gears including respective peripheral reversing pinions; each of said two mutually parallel stationary intermediate gears meshing with a respective one of the peripheral reversing pinions; and each of said peripheral reversing pinions being rigidly connected with a respective coaxially arranged one of said peripheral reversing gears which meshes with the second central reversing gear.

Claim 5

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; the first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; said slow rotating auxiliary drive being connected by means of said reverse movement blocking drive with said drive shaft for engaging and disengaging the forward and reverse clutches; said reversing gear set comprises a first central reversing gear by means of which said at least one reverse clutch can be coupled with the pinion of the first gearing stage; a second central reversing gear; a number of peripheral reversing gears; said first central reversing gear being connected by said number of peripheral reversing gears with said second central reversing gear; a second reverse clutch for coupling the second central reversing gear with the drive shaft; one of both central reversing gears meshing with two mutually parallel stationarily mounted intermediate gears; said number of peripheral reversing gears including respective peripheral reversing pinions; each of said two mutually parallel stationary intermediate gears meshing with a respective one of the peripheral reversing pinions; and each of said peripheral reversing pinions being rigidly connected with a respective coaxially arranged one of said peripheral reversing gears which meshes with the second central reversing gear.

Claim 6

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; the first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; said slow rotating auxiliary drive being connected by means of said reverse movement blocking device with said drive shaft for engaging and disengaging the forward and reverse clutches; said reversing gear set comprises a first central reversing gear by means of which said at least one reverse clutch can be coupled with the pinion of the first gearing stage; a second central reversing gear; a number of peripheral reversing gears; said first central reversing gear being connected by said number of peripheral reversing gears with said second central reversing gear; planetary gear support means; said peripheral reversing gears comprise planetary gears mounted in said planetary gear support means; and each of said planetary gears meshing with both central reversing gears.

Claim 7

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; the first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; said slow rotating auxiliary drive being connected by means of said reverse movement blocking device with said drive shaft for engaging and disengaging the forward and reverse clutches; said reversing gear set comprises a first central reversing gear by means of which said at least one reverse clutch can be coupled with the pinion of the first gearing stage; a second central reversing gear; a number of peripheral reversing gears; said first central reversing gear being connected by said number of peripheral reversing gears with said second central reversing gear; planetary gear support means; said peripheral reversing gears comprise planetary gears mounted in said planetary gear support means; and each of said planetary gears meshing with both central reversing gears.

Claim 8

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; a first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; said slow rotating auxiliary drive being connected by means of said reverse movement blocking device with said drive shaft for engaging and disengaging the forward and reverse clutches; and said forward and reverse clutches each comprise self-synchronizing and engageable synchronous clutches.

Claim 9

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; a first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; said slow rotating auxiliary drive being connected by means of said reverse movement blocking device with said drive shaft for engaging and disengaging the forward and reverse clutches; and said forward and reverse clutches each comprise self-synchronizing and engageable synchronous clutches.

Claim 10

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; the first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; said slow rotating auxiliary drive being connected by means of said reverse movement blocking device with said drive shaft for engaging and disengaging the forward and reverse clutches; and self-locking gearing means for connecting the auxiliary drive with the reverse movement blocking device.

Claim 11

A marine reversing gearing comprising: a drive shaft; a forward clutch essentially coaxially arranged with respect to said drive shaft; a first gearing stage comprising a pinion which can be operatively coupled by said forward clutch with said drive shaft; the first gearing stage further comprising two essentially mutually parallel arranged gears continuously meshing with said pinion of said first gearing stage; a second gearing stage including two gears; a power take-off shaft drivable by means of said two gears of said second gearing stage; a reversing gear set composed of a number of reversing gears; at least one reverse clutch essentially coaxially arranged with respect to said drive shaft; said reversing gear set being engageable with the pinion of the first gearing stage by means of said at least one reverse clutch; a slow rotating auxiliary drive having reversible direction of rotation; a reverse movement blocking device; said slow rotating auxiliary drive being connected by means of said reverse movement blocking device with said drive shaft for engaging and disengaging the forward and reverse clutches; and self-locking gearing means for connecting the auxiliary drive with the reverse movement blocking device.

Claim 12

The marine reversing gearing as defined in claim 6, wherein: said reverse movement blocking device is self-synchronizing and comprises control means bringing about an automatic clutching action.