US3690500A — Spherical containers for pressurized fluids

Claim 1

Independent Claim 123 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases, wherein at least one visible depression is provided in a wall of the container each said depression being capable of expanding outwardly in the event that the pressure within the container rises above a nominal value, each depression being disposed between the equatorial plane of the container and at least one of its two polar zones, one of which is reserved for receiving means for the extraction of fluid; and wherein a plurality of elongate depressions are formed at least in an upper hemisphere of the container, said depressions being formed by a series of folds converging from the equatorial plane towards a polar zone of the container.

Claim 2

Dependent Claim 123 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases, wherein at least one visible depression is provided in a wall of the container each said depression being capable of expanding outwardly in the event that the pressure within the container rises above a nominal value, each depression being disposed between the equatorial plane of the container and at least one of its two polar zones, one of which is reserved for receiving means for the extraction of fluid; and wherein a plurality of elongate depressions are formed at least in an upper hemisphere of the container, said depressions being formed by a series of folds converging from the equatorial plane towards a polar zone of the container.

Claim 3

Dependent Claim 100 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases wherein there are provided equi-angularly distributed about its vertical polar axis over at least one hemisphere, depressions in the form of spherical cups, useful for stable stacking up the containers in several levels, one container beside and over others, each container of an upper level resting at least along a circular edge of one of said depressions against similar containers staggered side by side on a lower level, one container projecting by a part of its general spherical shape into the depression of another container.

Claim 4

Dependent Claim 100 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases wherein there are provided equi-angularly distributed about its vertical polar axis over at least one hemisphere, depressions in the form of spherical cups, useful for stable stacking up the containers in several levels, one container beside and over others, each container of an upper level resting at least along a circular edge of one of said depressions against similar containers staggered side by side on a lower level, one container projecting by a part of its general spherical shape into the depression of another container.

Claim 5

Dependent Claim 90 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases wherein there are provided equi-angularly distributed about its vertical polar axis over its upper hemisphere four depressions in the form of spherical cups, useful for stable stacking up the containers in several levels, one container beside and over others, each container of an upper level projecting by a part of its general spherical shape into one of the cup shaped depressions of one of four similar containers arranged side by side on a lower level.

Claim 6

Dependent Claim 90 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases wherein there are provided equi-angularly distributed about its vertical polar axis over its upper hemisphere four depressions in the form of spherical cups, useful for stable stacking up the containers in several levels, one container beside and over others, each container of an upper level projecting by a part of its general spherical shape into one of the cup shaped depressions of one of four similar containers arranged side by side on a lower level.

Claim 7

Dependent Claim 33 words

A container as specified in claim 3, in which each of said depressions is coaxial with a radius of the container which subtends with the polar axis thereof an angle less than 30*.

Claim 8

Dependent Claim 83 words

A container as specified in claim 3, comprising further in its lower hemisphere, around its vertical polar axis, a depression in the form of a spherical cup, the circular edge of which is useful as a stable seating of the container on a substantially horizontal plane, so as to place the depressions on the upper hemisphere of the same container all on a same level, on which they will receive a part of the generally spherical shaped superposed containers of an upper level.

Claim 9

Dependent Claim 45 words

A container as specified in claim 5, comprising further in its apex, between the said depressions, means for the extraction of fluid on a part of the container when this means will be preserved from any contact with adjoining similar containers in stacked up relation.

Claim 10

Dependent Claim 47 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases, wherein at least one of the two hemispheres surrounding its vertical polar axis comprises depressions of annular form extending about said axis in circles parallel to the equatorial plane of the container.

Claim 11

Dependent Claim 47 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases, wherein at least one of the two hemispheres surrounding its vertical polar axis comprises depressions of annular form extending about said axis in circles parallel to the equatorial plane of the container.

Claim 12

Dependent Claim 85 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases, wherein at least one of the two hemispheres surrounding vertical polar axis comprises a series of folds converging from the equatorial plane towards a polar zone of the container and which are capable of expanding outwardly in the event that the pressure within the container rises above a nominal value, at least one of the two polar zones of the container being reserved for receiving means for extraction of fluid.

Claim 13

Dependent Claim 85 words

A container of generally spherical shape for pressurized fluids, particularly for pressurized liquefied combustible gases, wherein at least one of the two hemispheres surrounding vertical polar axis comprises a series of folds converging from the equatorial plane towards a polar zone of the container and which are capable of expanding outwardly in the event that the pressure within the container rises above a nominal value, at least one of the two polar zones of the container being reserved for receiving means for extraction of fluid.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-09-12	1976-03-13	1976-09-12	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-09-12	1980-03-13	1980-09-12	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-09-12	1984-03-13	1984-09-12	$7700.00	Window Closed / Lapsed

Spherical containers for pressurized fluids

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