US 11,717,976 B2
Box top opener
Nicholas L. Seferi, Southbury, CT (US)
Assigned to Acme United Corporation, Fairfield, CT (US)
Filed by Acme United Corporation, Fairfield, CT (US)
Filed on Mar. 19, 2021, as Appl. No. 17/206,704.
Prior Publication US 2022/0297323 A1, Sep. 22, 2022
Int. Cl. B26B 5/00 (2006.01)
CPC B26B 5/003 (2013.01) [B26B 5/005 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A box top opener comprising:
an elongated body having a first end defining a frontal blade opening and an opposed second end including a structure defining at least one notch;
a guide extending forwardly at said first end;
a blade positioning assembly comprising:
a blade carrier configured to receive a blade, the blade carrier having a shank, the shank having a follower mounted to the shank;
a tubular receiver receiving said shank and having an interior spiral track wherein said follower follows said track;
a knob extending outwardly at said second end and rotatably coupled with said receiver, and exteriorly manually rotatable and longitudinally displaceable relative to said body, said knob being biased in a rearward longitudinal direction and including a detent;
a spring disposed between said knob and said receiver, said spring biasing the detent into engagement in said notch at an angular position of said knob,
so that said blade carrier is moveable between a first position and a second position by longitudinally displacing said knob and rotating said knob.