Autoretracting box-cutting knife
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 8, 1997
Grant Date -
N/A
app pub date -
Dec 28, 1995
filing date -
Mar 3, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An autoretracting box-cutting knife has a housing dimensioned to be held in the hand and having a longitudinally forwardly projecting front end, a blade slide displaceable longitudinally in the housing between a front position and a rear position, and a blade secured in the slide, projecting forward from the housing in the front position of the slide, and retracted back into the housing in the rear position of the slide. In accordance with this invention a blade-actuating crank has an inner and an outer end and is mounted on a pivot on the housing that defines for the crank a transverse pivot axis. Interengaging formations on the crank and holder offset from the pivot can move the crank with the holder between a rear position with its outer end projecting laterally from the housing in the rear position of the holder and a front position in the front position of the holder. A spring engaged between the slide and the housing urges the holder and the crank into the respective rear positions so that when the outer end of the crank is pushed forward to push the crank into the front position the slide is pushed forward into its front position and the blade projects from the housing.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully