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US 5,628,417 AGranted
Multi-start blow molded locking bottles
OwnerJacob Van Haltereninventor
Life of this patent
Estimating the term…
Abstract
A blow molded plastic cap is provided, having multi-start external threads, the bottom rim of its body being engagable with multiple internal threads of a blow molded plastic container to effect a seal therewith. The interlocking of the threads compresses together the cap and the container forming a seal therewith provided by the side wall and the top wall of the cap in combination with the side wall and the top flange of the container.
Claims17
A container, comprising:
- a multi-start screw cap, including a cap body having an annular side wall, said annular side wall having first inclined screw threads, and a cap top wall disposed above said annular side wall having a sealing surface extending at an angle around its periphery substantially radially outwardly of said annular side wall;
- and
- a threaded neck container, including a neck portion having second inclined screw threads, a flange extending from said neck portion, wherein said flange has a bottom edge extending radially outwardly from said neck portion and a top edge, connected to a distal end of said bottom edge, and extending radially inwardly therefrom, wherein said sealing surface of said cap top wall is compressibly engageable with said top edge of said flange causing said flange to compress, providing a seal therewith,
- wherein said first screw threads are cooperatively engageable with said second screw threads thereby providing engagement and effecting a simultaneous seal therewith, whereby said screw cap and said threaded neck container lock into position providing for a liquid tight seal.
1 more element
A container, comprising:
- a multi-start screw cap, including a cap body having an annular side wall, said annular side wall having first inclined screw threads, and a cap top wall disposed above said annular side wall having a sealing surface extending around its periphery substantially radially outwardly of said annular side wall;
- a threaded neck container, including a neck portion having second inclined screw threads, a flange extending from said neck portion, wherein said flange has a bottom edge extending radially outwardly from said neck portion and a top edge, connected to a distal end of said bottom edge, and extending radially inwardly therefrom, wherein said sealing surface of said cap top wall is compressibly engageable with said top edge of said flange causing said flange to compress, providing a seal therewith;
- wherein said first screw threads are cooperatively engageable with said second screw threads thereby providing engagement and effecting a simultaneous seal therewith, whereby said screw cap and said threaded neck container lock into position providing for a liquid tight seal;
- and
- a stop member provided on said screw cap to prevent over-rotation of said first and said second screw threads.
2 more elements
Dependencies are inferred from the claim text.