Brushing – scrubbing – and general cleaning
Patent
1977-07-21
1979-06-19
Larson, Lowell A.
Brushing, scrubbing, and general cleaning
145 46, F16B 4100
Patent
active
041583779
ABSTRACT:
This captive screw device consists of a resilient retaining support for holding screws in predetermined positions in alignment with or within through holes formed in a member to be fastened by said screws to another member or a structure. Each support comprises a split socket or washer of which the central hole is either threaded or somewhat smaller than the diameter of the screw stem; overlying this hole is a tapered cup engageable by the screw head, and underlying this hole are a pair of legs adapted to clamp by snap engagement the member to be fastened; a plurality of such supports may be interconnected for retaining several screws in position; screwing the screws home will cause the screw head to engage said cup and expand the support so as to distort same and eventually break it, thus causing its ejection or at least facilitating its removal.
REFERENCES:
patent: 2949143 (1960-08-01), Shur
patent: 3189077 (1965-06-01), Willis, Jr. et al.
patent: 3316949 (1967-05-01), Canfield
patent: 3561075 (1969-07-01), Selinko
patent: 3571904 (1971-03-01), Gulistan
patent: 3679266 (1972-07-01), Jenkins
patent: 3917300 (1975-11-01), Salomon
patent: 3967049 (1976-06-01), Brandt
Wood and Huffins, "Captive-Screw Assemblies", Machine Design, Nov. 1960, p. 181.
Larson Lowell A.
Ramsey Kenneth J.
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