Envelope opener

Details Envelope opener Envelope opener

1986-03-28

1987-09-15

Kazenske, E. R.

Cutlery

Cutting tools

Plural cooperating blades

30287, 30292, B26B 1300

Patent

active

046930043

ABSTRACT:
An envelope opener is formed of a rectangular casing having a central transverse guide slot, two cutting disks project into the slot from either side and have mutually interfacing edge portions thereat. A spring resiliently maintains the edge portions of the disks in constant contact in the slot. The guide slot has an upwardly convex bottom surface to reduce friction of an envelope being guided through the slot.

REFERENCES:
patent: 1474856 (1923-11-01), Starkl
patent: 2647313 (1953-08-01), Ohlsson
patent: 3597843 (1971-08-01), Kettlestrings
patent: 3710444 (1973-01-01), Fishman
patent: 4283853 (1981-08-01), Fazzini
patent: 4574480 (1986-03-01), Dunn

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