Ships – Spars – Masts and masting
Patent
1989-01-27
1990-09-25
Peters, Jr., Joseph F.
Ships
Spars
Masts and masting
114 90, 114 392, B63H 910
Patent
active
049585819
ABSTRACT:
A sailboard has a force responsive device connected to its mast for providing first and second output signals corresponding to the shearing forces acting between the mast and the sailboard in the longitudinal direction of the sailboard and in the transverse direction of the sailboard, with an indicator responsive to the first and second output signals for providing visual indications representing the shearing forces to enable improved operation of the sailboard.
REFERENCES:
patent: 3157148 (1964-11-01), Reed
patent: 4718369 (1988-01-01), Pollard
Peters Jr. Joseph F.
Swinehart Edwin L.
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