Non-rotatable mechanical attachment and method therefor

Details Non-rotatable mechanical attachment and method therefor Non-rotatable mechanical attachment and method therefor

1995-05-24

1996-12-31

Arola, Dave W.

Pipe joints or couplings

With support

Vehicle

285222, 285330, 116137R, 29512, 29521, F16L 300

Patent

active

055886841

ABSTRACT:
A three-piece air horn assembly is provided including a die cast base configured for attachment to a vehicle, an intermediate tube, and a die cast bell, which pieces are interconnected by mechanical connections. In particular, the base includes a cylindrically-shaped hole with front and rear shoulders at each end, the rear shoulder being circumferentially non-uniform, and the tube includes a circumferentially extending ridge engaging the front shoulder and a flared end engaging the rear shoulder. The tube is extended into the hole in the base and the end is then flared into engagement with the non-uniform rear shoulder. Engagement of the flared end into the non-uniform rear shoulder prevents rotation of the tube on the base while the engagement of the flared end and the ridge with the front and rear shoulders, respectively, provides an axially secure connection. The intermediate tube is similarly connected to the bell by an all mechanical connection including a second ridge engaging a front shoulder on the bell and a second flared end engaging a rear shoulder on the bell.

REFERENCES:
patent: 405227 (1889-06-01), Schaubel
patent: 911397 (1909-02-01), Howell
patent: 928947 (1909-07-01), Dawson
patent: 949621 (1910-02-01), Coleman
patent: 1340118 (1920-05-01), Coleman
patent: 1884602 (1932-10-01), Dillhoefer
patent: 2729188 (1956-01-01), Erikson
patent: 4905766 (1990-03-01), Dietz et al.
Exhibit A discloses a prior art three-piece horn assembly disclosed in the background of the present specification, the horn assembly being manufactured by Hadley Products, Grandville, Michigan.

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