Metal deforming – By use of non-deforming work-gripping clamp and relatively... – With cutting
Patent
1982-07-29
1985-04-09
Crane, Daniel C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
With cutting
72308, 72310, 72 70, 72125, 72324, 72379, 291635R, 981211, B21D 5300, B21D 5380
Patent
active
045093547
ABSTRACT:
A method of manufacturing a fan guard from a plate member wherein inward slits, each having at least a radial slit section are formed in a first section of the plate member located between a central section and a ring-like section radially outwardly spaced therefrom of the plate member such that the radial slit sections extend from the central section to the ring-like section in circumferentially spaced relation to each other. Radially outward slits, each having at least an arcuate slit section, are formed in a second section of the plate member located between the ring-like section and an outer peripheral section of the plate member such that the arcuate slit sections extend from the ring-like section to the outer peripheral section in circumferentially spaced relation to other. Portions each extending between the adjacent two radial slit sections are bent to form louvers. The central, first and ring-like sections are offset from the outer peripheral section while rotating the central, first and ring-like sections relative to the outer peripheral section, to twist portions extending between the adjacent two arcuate slit sections to form louvers.
REFERENCES:
patent: 1208241 (1916-12-01), Varley
patent: 1287298 (1918-12-01), Halvorson et al.
patent: 2395578 (1946-02-01), Pergande
patent: 2492909 (1949-12-01), Warp
patent: 3090337 (1963-05-01), Lyon
patent: 3258954 (1966-07-01), Dennis
patent: 3618185 (1971-11-01), Coen
Akiyama Mitsuo
Matsui Katsuo
Ochiai Izumi
Sekine Youji
Suzuki Akio
Crane Daniel C.
Hitachi , Ltd.
LandOfFree
Method of manufacturing fan guard does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing fan guard, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing fan guard will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1162992