Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-01-27
1977-09-27
Robinson, Ellis
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156235, 156247, 156249, 156298, 428209, 428901, 338 2, B32B 3100, B32B 1508
Patent
active
040509761
ABSTRACT:
Electrical-resistance strain gages, particularly those of foil construction, are advantageously pre-packaged as conveniently-manipulatable and protected sub-assemblies in which the metal gage grid and its tabs are sandwiched between a flexible tape coated with a tacky adhesive and a partly-cured thin layer of fiber-reinforced resin, the resin layer and exposed portions of the adhesive-coated tape in turn being protected by a removable polytetrafluorethylene cover sheet; bonding of the gage to a measurement specimen is achieved without conventional cementing by removing the cover sheet, abutting the resin layer with a selected surface of the specimen, heating the layer while pressing against the tape to force the gage partly into the layer and to force the layer against the specimen surface, and stripping the tape after the resin has cured, thereby leaving the gage in a firmly-bonded close proximity with the specimen surface, separated therefrom only by a thinned layer of fiber-reinforced resin which also locks with the gage filaments partly embedded within that layer.
REFERENCES:
patent: 2963773 (1960-12-01), Starr
patent: 3279969 (1966-10-01), Borchardt
patent: 3609624 (1971-09-01), Nagy
patent: 3611241 (1971-10-01), Herceg
patent: 3950200 (1976-04-01), Muramoto
patent: 3984598 (1976-10-01), Sarazin
Bofors America, Inc.
Mrose James E.
Robinson Ellis
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