Fiberglass utility pole crossarm

Details Fiberglass utility pole crossarm Fiberglass utility pole crossarm

1979-10-30

1981-04-14

Epstein, Henry F.

Stock material or miscellaneous articles

Sheet including cover or casing

Including elements cooperating to form cells

52 40, 52697, 52806, 428116, B32B 312

Patent

active

042620473

ABSTRACT:
A generally horizontal log of fiberglass honeycomb material defining side-by-side upstanding adjacent cells substantially throughout the log is provided and the log includes a hard outer covering enclosing the log on all sides. The covering is bonded to the opposing side surfaces of the log and the opposite ends of the log include vertical bores therethrough having thrust sleeves of substantially the same length tightly received in and extending through the vertical bores. The hard outer covering of the log is comprised of resin impregnated fiberglass roving and includes an outer layer of fiberglass resin sprayed or flowed over the covering.

REFERENCES:
patent: 2477852 (1949-08-01), Bacon
patent: 3013584 (1961-12-01), Reed et al.
patent: 3211253 (1965-10-01), Gonzalez
patent: 3235652 (1966-02-01), Lindsey
patent: 3248275 (1966-04-01), Lincoln
patent: 3327441 (1967-06-01), Kelly
patent: 3380206 (1968-04-01), Barnett
patent: 3450593 (1969-06-01), Fossier et al.
patent: 3531578 (1970-09-01), Dey
patent: 3564798 (1971-02-01), Darby et al.
patent: 3587479 (1971-06-01), Geschwender
patent: 3888531 (1975-06-01), Straza et al.

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