Other

Tm Invention Associates

Unique Knife Manufacturing Corp.

James M Castelluzzo

Michael I Rackman

A utility knife employs a slide having a cantilevered lever for capturing a blade therein. A leading blade in a reservoir is capturable by the slide using a tooth resiliently affixed to the slide which is positioned to enter a locking hole in the blade. The tooth may be withdrawn from the hole in the blade whereby the blade may be removed for reversal and reinsertion or for discard. When the captured blade is removed, the slide may be returned to the loading position for capturing the next blade from the reservoir. As long as a captured blade is engaged by the tooth, the slide is prevented from returning to the loading position, and the loading blade in the reservoir is prevented from advancing.

Utility knife

A knife includes a blade reservoir and a sleeve slidable onto the knife to cover the reservoir. A latch prevents removing the sleeve unless depressed. The latch is located in a position requiring the knife to be turned into a position facing the blade reservoir upward before it can be actuated. In this manner, the blade reservoir must face upward when the sleeve is removed and accidental dropping of blades from the reservoir during opening is prevented.

Apparatus for ensuring that a knife is opened in a desired orientation

A knife having generally thin, relatively inexpensive and replaceable blades which can be extended from the handle when the knife is to be used and can be retracted when the knife is to be stored, the knife having a cavity in the handle for receiving a stack of the blades, a slide having a magnetic face for engaging and sliding the innermost blade into extended position and for retracting the blade into the handle and a lock for locking the blade extended.

Knife with plural replaceable blade storage and means for single blade

There is disclosed a multi-layer tape system, of the type disclosed is Castelluzzo application Ser. No. 930,700, U.S. Pat. No. 4,182,789, for applying register marks or other symbols to aligned art-work sheets used in the graphic arts field. In a two-layer system, each of two superimposed tapes has aligned markings thereon. A weak adhesive secures the two tapes together, and the two outer surfaces are coated with a strong adhesive. In a four-layer system, a separator is disposed between a pair of two-layer systems; the separator has holes therein so that the two tape systems can adhere to each other and remain in alignment, contact being made in the regions of the holes. The relative adhesive strengths maintain the system integrity prior to use while also permitting tape sparation during use. Instead of using clear tapes and printed markings as in the Castelluzzo system, opaque or colored tapes with punched markings are employed. This greatly simplifies manufacture because there is no need to align pre-marked tapes during the lamination step; the registration markings are punched after lamination. Color contrast is achieved by use of the opaque or colored tapes.

Multi-layer graphic arts tape system

There is disclosed a multi-layer tape system for applying register marks or other symbols to aligned artwork sheets used in the graphic arts field. In a two-layer system each of two superimposed clear tapes has aligned markings printed thereon. A weak adhesive secures the two tapes together, and the two outer surfaces are coated with a strong adhesive. In a four-layer system, a separator is disposed between a pair of two-layer systems; the separator has holes therein so that the two tape systems can adhere to each other and remain in alignment, contact being made in the regions of the holes. The relative adhesive strengths maintain the system integrity prior to use while also permitting tape separation during use.

Growing community of inventors

New York, NY, United States of America

James M Castelluzzo