Slide fasteners and protective containers

Claim 1

FOR A SLIDE FASTENER COMPRISING MALE AND FEMALE FASTENER STRIPS HAVING LATERALLY DISPOSED LONGITUDINALLY EXTENDING SLIDER GUIDES AND FORMED TO INTERLOCK BY RELATIVE LATERAL MOVEMENT, A SLIDER COMPRISING: A SUBSTANTIALLY USHAPED BODY ADAPTED TO STRADDLE LOCALLY JUXTAPOSED REGIONS OF THE FASTENER STRIPS AND HAVING MEANS DEFINING A TRANSVERSE APERTURE THEREOF WHICH IS OPEN AT THE SURFACE OF SAID BODY WHICH IS GENERATED BY THE CROSS-BAR PORTION OF ITS SAID U-SHAPE; A PUSH-PULL MEMBER COMPRISING A PAIR OF DEPENDING PARALLEL PLATES FIXED IN REGISTERING SPACED RELATION WITH ONE ANOTHER AND MOVABLE VERTICALLY IN AND OUT OF THE SAID TRANSVERSE APERTURE; A ROLLER MOUNTED ON THE DEPENDING END OF EACH OF SAID PLATES; A SADDLE-SHAPED PART OF RESILIENTLY FLEXIBLE MATERIAL MOUNTED ON SAID BODY BETWEEN SAID PLATES; INWARDLY DIRECTED CLOSURE MEMBERS CARRIED BY SAID SADDLE-SHAPED PART AND ADAPTED FOR ENGAGEMENT WITH THE SLIDER GUIDES OF THE FASTENER STRIPS AT SUCH LOCALLY JUXTAPOSED FASTENER STRIP REGION; SAID CLOSURE MEMBERS AND SAID BODY DEFINING A LONGITUDINALLY EXTENDING PASSAGE FROM END TO END OF THE SLIDER FOR RECEIVING THE FASTENER STRIPS WHEREBY THE SLIDER IS ADAPTED FOR MOVEMENT ALONG ANY CONTINUOUS LENGTH OF SUCH STRIPS; SAID SADDLE-SHAPED PART HAVING OPPOSITELY DISPOSED AND EXTERIOR FACING ROLLER BEARING SURFACES RESPECTIVELY ENGAGED BY SAID ROLLERS WHEREBY PULLING MOVEMENT OF THE PUSH-PULL MEMBER OUT OF THE SAID APERTURE CAUSES SAID ROLLERS TO DISTORT THE SADDLESHAPED PART SO AS TO ADJUST THE SEPARATION OF THE CLOSURE MEMBERS TO A VALUE PERMITTING REMOVAL OF THE SLIDER FROM THE FASTENER STRIPS AND WHEREBY PUSHING MOVEMENT OF THE PUSH-PULL MEMBER INTO THE SAID APERTURE CAUSES SAID ROLLERS TO PERMIT RETURN OF SAID SADDLE-SHAPED PART TO ITS INITIAL CONDITION TO ADJUST THE SEPARATION OF THE CLOSURE MEMBER TO A VALUE CORRESPONDING TO THE SPACING OF THE SLIDER GUIDES OF INTERLOCKED FASTENER STRIPS.