초록 ▼

Elastomeric bladder assemblies designed for operation at constant pressure to maintain a constant dispensing rate for the contents exhibit a pressure spike shortly before the end of the duty cycle. This pressure spike may be prevented by including within the lumen of the bladder a bolus forming mean

Elastomeric bladder assemblies designed for operation at constant pressure to maintain a constant dispensing rate for the contents exhibit a pressure spike shortly before the end of the duty cycle. This pressure spike may be prevented by including within the lumen of the bladder a bolus forming means which prevents the bladder from collapsing to a cylindrical configuration.

대표청구항 ▼

A positive expulsion bladder assembly comprising, in combination, an elastomeric bladder having a central lumen with a predetermined, unexpanded, internal diameter and lumen filling core means within said bladder, said core means being provided with a bulbar portion having a diameter greater than sa

A positive expulsion bladder assembly comprising, in combination, an elastomeric bladder having a central lumen with a predetermined, unexpanded, internal diameter and lumen filling core means within said bladder, said core means being provided with a bulbar portion having a diameter greater than said predetermined internal diameter.