The invention relates to a center-axis oarlock and methods of providing constant gearing throughout the arc of an oar in a boat or shell.
CENTER PIVOT ADJUSTABLE OARLOCK
2018-12-06
Patent
Electronic Resource
English
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
British Library Online Contents | 1995