US 12,291,318 B2
Powertrain for an amphibian
Alan Timothy Gibbs, London (GB); and Simon James Longdill, Nuneaton (GB)
Assigned to Gibbs Technologies Limited, Nuneaton (GB)
Filed by Gibbs Technologies Limited, Nuneaton (GB)
Filed on Dec. 14, 2021, as Appl. No. 17/644,254.
Application 17/644,254 is a continuation of application No. 16/923,072, filed on Jul. 7, 2020, granted, now 11,214,347.
Application 16/923,072 is a continuation of application No. 15/579,720, abandoned, previously published as PCT/GB2016/051692, filed on Jun. 8, 2016.
Claims priority of application No. 1509933 (GB), filed on Jun. 8, 2015.
Prior Publication US 2022/0126970 A1, Apr. 28, 2022
Int. Cl. B63H 23/10 (2006.01); B60F 3/00 (2006.01); B63H 23/30 (2006.01); F16D 43/04 (2006.01)
CPC B63H 23/10 (2013.01) [B60F 3/0007 (2013.01); B60F 3/0084 (2013.01); B63H 23/30 (2013.01); F16D 43/04 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A power train for an amphibian operable in land and marine modes, the power train comprising:
a prime mover having an integral speed change transmission;
at least a first land propulsion unit;
at least a first marine propulsion unit;
a power transmission unit including a drive member configured to couple the prime mover to the at least first marine propulsion unit, wherein:
the prime mover is arranged to drive the at least first land propulsion unit through/via the integral speed change transmission in the land mode; and
the prime mover is arranged to drive the at least first marine propulsion unit through/via the power transmission unit in both the marine mode and the land mode; and
a second marine propulsion unit, wherein the prime mover is arranged to drive the second marine propulsion unit through/via the power transmission unit in both the marine mode and the land mode;
wherein a crankshaft or other drive shaft of the prime mover is arranged to drive the at least first and/or a second marine propulsion unit(s) through/via the power transmission unit, and drive is not provided through/via the integral speed change transmission on the prime mover; and
wherein the power transmission unit provides a fixed input/output ratio.