US Pat. No. 9,803,784

CORRUGATED PIPE GASKET

Press-Seal Corporation, ...

1. A pipe assembly defining perpendicular axial and radial directions, comprising:
a pipe defining a longitudinal axis and having a spigot end with an annular corrugation, the corrugation including a front
portion defining a front peak point, a rear portion defining a rear peak point, and a groove disposed between the front and
rear portions and defining a nadir, the front portion defining a radius extending forwardly from the front peak portion and
having a radius center defining a first radial distance from the longitudinal axis; and

an annular gasket separate from the pipe, the annular gasket having a body formed of a resilient material and including a
sealing side and anchoring side, the gasket comprising:

an anchoring portion disposed at the anchoring side and extending radially inwardly, the anchoring portion received in the
groove of the pipe;

a first seal lobe disposed at the sealing side and defining a first lobe tip; and
an anti-roll lip positioned forward of the first seal lobe;
the gasket having an uninstalled condition in which the gasket is not connected to the pipe, with the anti-roll lip extending
radially inwardly toward said anchoring side; and

the gasket having an installed condition in which the gasket is stretched around the annular corrugation of the pipe in a
tensioned condition, with the anti-roll lip extending radially inwardly toward said anchoring side in a direction toward the
longitudinal axis along and over a leading surface of the front portion of the annular corrugation to an anti-roll lip tip,
the anti-roll lip tip having a second radial distance from the longitudinal axis that is substantially equal to the first
radial distance from the radius center to the longitudinal axis.

US Pat. No. 9,644,768

EXPANDABLE SEALING MECHANISM

PRESS-SEAL CORPORATION, ...

1. A sealing assembly comprising:
an expansion band comprising:
an arcuate band portion defining a fluid flow path therethrough;
a pair of end portions monolithically formed with said arcuate band portion and disposed at opposing ends of said arcuate
band portion;

a pair of first threaded components having opposing threads and respectively captured within said pair of end portions, wherein
a profile of each of said pair of end portions progressively radially thickens from a substantially rectangular cross-section
starting at respective junctions between said arcuate band portion and said pair of end portions and advancing toward a substantially
round cross-section at respective terminal end surfaces of said expansion band; and

a second threaded component including oppositely-threaded ends respectively threadably engaged with said pair of first threaded
components, such that rotation of said second threaded component in a first direction causes said pair of end portions to
be simultaneously driven apart from one another to thereby expand a diameter of said arcuate band portion.

US Pat. No. 9,617,722

MANHOLE BASE ASSEMBLY WITH INTERNAL LINER AND METHOD OF MANUFACTURING SAME

Press-Seal Corporation, ...

1. A manhole base assembly comprising:
a concrete base comprising an upper opening, a first side opening below the upper opening, and a second side opening below
the upper opening, the concrete base having a non-cylindrical outermost profile; and

a liner received within the concrete base, the liner comprising:
an entry aperture aligned with the upper opening of the concrete base;
a first side wall having a first pipe aperture therethrough, the first pipe aperture below the entry aperture and aligned
with the first side opening of the concrete base;

a second side wall positioned radially outside the entry aperture and having a second pipe aperture therethrough, the second
pipe aperture below the entry aperture and aligned with the second side opening of the concrete base; and

a flow channel extending between the first pipe aperture and the second pipe aperture, the flow channel in fluid communication
with the entry aperture.

US Pat. No. 10,214,893

MANHOLE BASE ASSEMBLY WITH INTERNAL LINER AND METHOD OF MANUFACTURING SAME

Press-Seal Corporation, ...

1. A liner for use in casting within a cast manhole structure having a cast base, the liner comprising:an entry aperture defining an entry aperture diameter;
a first side wall having a first pipe aperture sized and positioned to be aligned with a first side opening of the cast base;
a second side wall having a second pipe aperture sized and positioned to be aligned with a second side opening of the cast base; and
a liner top wall disposed radially outwardly of said entry aperture diameter and extending between said entry aperture and said first side wall;
a flow channel extending between said first and second pipe apertures and in fluid communication with the entry aperture; and
a liner lid received in the entry aperture, the liner lid comprising:
a first lid portion sealingly engaged with a sidewall of the entry aperture; and
a second lid portion coupled to the first lid portion and moveable in an upward direction about an axis which extends across said entry aperture between a closed configuration in which the second lid portion is sealingly engaged with the entry aperture and an open configuration in which the second lid portion is disengaged from the entry aperture.

US Pat. No. 10,053,850

MANHOLE BASE ASSEMBLY WITH INTERNAL LINER AND METHOD OF MANUFACTURING SAME

Press-Seal Corporation, ...

1. A manhole base assembly comprising:a cast base having a non-cylindrical outermost profile, comprising:
an upper opening having an upper opening diameter;
a first, planar base wall including a first pipe opening, said first base wall disposed radially outwardly of said upper opening diameter;
a second, planar base wall including a second pipe opening;
a third, curved outer wall extending between said first and second base walls;
a base top wall disposed radially outwardly of said upper opening diameter and extending between said upper opening and said first base wall; and
a polymeric liner received within said cast base and extending substantially between said first and second pipe openings, said liner including a flow channel disposed at a lower end of said cast base, said flow channel extending substantially between said first and second pipe openings, said first and second pipe openings aligned with respective pipe axes disposed at a first angle with respect to one another, said first angle defining a second, reflex angle, said first and second angles different from one another.