Constant force sheet glass cutting drill assembly

Details Constant force sheet glass cutting drill assembly Constant force sheet glass cutting drill assembly

1978-06-05

1980-03-25

Smith, Gary L.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51111R, 51283R, 125 20, 156 98, 156513, 408 41, B32B 3500

Patent

active

041943228

ABSTRACT:
A portable lightweight drill assembly has a cutter mounted against a sheet of flat glass through which a hole is to be drilled; in an alternate embodiment, the drill shaft extends through a hole in the glass and has cutters mounted on both sides of the glass; in each case, the cutters are biased against the glass by a fluid pressure actuated bellows type servo constructed to exert a constant cutting force against the glass surface by means of a self-regulating action of the fluid pressure force.

REFERENCES:
patent: 2941338 (1960-06-01), Santschi
patent: 3007686 (1961-11-01), Pearson
patent: 3494348 (1970-02-01), Lindblad
patent: 3568367 (1971-03-01), Myers
patent: 3813820 (1974-06-01), Highberg et al.
patent: 3848365 (1974-11-01), Bovensrepen et al.
patent: 4073094 (1978-02-01), Walz

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