Safety closure
AssigneeProduct Investment, Inc.
InventorJohn C. Henning
Life of this patent
Estimating the term…
Abstract
A safety closure is disclosed for containers of potentially harmful substances. The safety closure includes an inner cap threaded over the container and an outer cap which encloses and is rotatably supported by the outer cap which tracks in a groove in the inner cap. The groove includes an inner section in which the lug is free to move, an outer section including two abutments, and sections interconnecting the inner and outer section. When the driving lug engages either of the abutments, the outer cap can rotate the inner cap.
Claims17
A safety closure for a threaded container adapted to store a potentially harmful substance, said closure comprising an inner cap having internal threads for engagement with the threads of said container, an outer cap substantially enclosing said inner cap and being rotatably supported thereby, a driving lug, means carried by said outer cap for supporting said driving lug for radial movement relative to said outer cap, groove means on said inner cap receiving said driving lug said groove means comprising an inner circular section, a first radial section, an intermediate arcuate section, said first radial section extending between said inner circular section and said intermediate arcuate section, a second radial section, an outer arcuate section having first and second abutments, said second radial section extending between said intermediate section and said outer arcuate section, said outer cap being effective to rotate said inner cap in one direction when said drive lug engages said first abutment and in the opposite direction when the drive lug engages the second abutment.
A safety closure for a threaded container adapted to store a potentially harmful substance, said closure comprising an inner cap having internal threads for engagement with the threads of said container, an outer cap substantially enclosing said inner cap and being rotatably supported thereby, a driving lug, means carried by said outer cap for supporting said driving lug for movement toward and away from the circumference of said outer cap, groove means on said inner cap receiving and driving lug said groove means comprising an inner circular section, a first arcuate section disposed radially outwardly of said inner circular section, a radial section interconnecting said inner circular section and said arcuate section, an outer section disposed outwardly of said first arcuate section and interconnected thereto, said outer section having a first abutment, said outer cap being effective to rotate said inner cap to open said inner cap when said driving lug is in engagement with said first abutment, a second abutment in a section communicating with said first arcuate section and circumferentially spaced from said first abutment, said outer cap being effective to drive said inner cap to tighten said inner cap when said driving lug is in engagement with said second abutment.
Dependencies are inferred from the claim text.