Dual-stage tapered leaf spring for a trailer

Details Dual-stage tapered leaf spring for a trailer Dual-stage tapered leaf spring for a trailer

1991-03-11

1993-05-11

Tyson, Karin L.

Land vehicles

Wheeled

Running gear

280718, 267 45, 267 47, 267 361, B60G 1104, B60G 5047

Patent

active

052095185

ABSTRACT:
The present invention discloses a lightweight dual-stage tapered leaf spring assembly for use in heavy-duty trailer suspension applications. The dual-leaf tapered leaf spring assembly has a main or first tapered leaf defining a first stage rate and a second tapered leaf operable to define a second stage rate. The first and second leafs are formed to include a tapered thickness profile which closely approximates a true modified parabolic taper. The "approximated" modified parabolic profiles for each of the main and second leafs are adapted to provide a smooth non-linear transition between the first and second stage rates.

REFERENCES:
patent: 1221109 (1917-04-01), Titus
patent: 1233762 (1917-07-01), Doherty
patent: 1391644 (1921-09-01), Threlkeld
patent: 1551612 (1925-09-01), Oversmith
patent: 2533511 (1950-12-01), Rowland
patent: 3079139 (1963-02-01), Greene et al.
patent: 3580347 (1971-05-01), McGee
patent: 3833236 (1974-09-01), Davis
patent: 3921965 (1975-11-01), Skerry
patent: 3933367 (1976-01-01), Tamas
patent: 4383703 (1983-05-01), Honda
patent: 4886292 (1989-12-01), Azamatov

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