Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having hydrofoil
Patent
1982-02-05
1984-02-28
Blix, Trygve M.
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Having hydrofoil
180 92R, B63C 3534
Patent
active
044336349
ABSTRACT:
A tracked, amphibious vehicle with track securement and guide means for the track to prevent "track throw" or loss. The vehicle includes two spaced, parallel pontoons joined by a centrally located operator's platform structure, with each pontoon having a moveable track for propulsion, with the track supported on its pontoon by fore and aft sprocket wheel sets and a series of larger bogie wheels at its bottom and smaller guide wheels at its top. Each track comprises a parallel set of rubber, continuous, endless belts joined together by a series of laterally disposed cleats with drive lugs, which lugs are engaged by the teeth of the sprocket wheels. For track securement in a first embodiment (FIG. 5) every fifth cleat includes an inwardly projecting, polyethylene T-hanger retainer which matingly fits and rides in a beam guide attached to the bottom of the pontoon and extends from the initial bottom bogie wheel to the entry of the aft, drive sprocket. In a record embodiment (note FIG. 6) the securing parts are reversed with the T-retainer element being a continuous beam fixed to the bottom of the pontoon and with the mating receptive elements being on the cleats of the track. For track guidance every cleat includes a pair of outwardly facing, inwardly directed, vertical guide members which face the inward or interior sides of the upper and lower bogie wheels to prevent, any lateral forces from moving the track off its pontoon.
REFERENCES:
patent: 830447 (1906-09-01), Maccallum
patent: 2730064 (1956-01-01), Eyring
patent: 2917095 (1959-12-01), Galanot
patent: 3111349 (1963-11-01), Tucker, Sr.
patent: 3418961 (1968-12-01), Gregg
patent: 3879092 (1975-04-01), Rose
patent: 3951093 (1976-04-01), Poche
patent: 4082371 (1978-04-01), Werner et al.
Blix Trygve M.
Coast Machinery, Inc.
Garvey, Jr. Charles C.
Shum Ivy M.
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