Back to results
US 11,543,031 B2Granted
Shaft seal assembly
AssigneeInpro/Seal LLC
InventorsNeil F. Hoehle, Chandhini Gowthaman
Life of this patent
Estimating the term…
Abstract
An illustrative embodiment of a shaft seal assembly generally includes a first stator, a second stator, and a throttle member. In one illustrative embodiment, the second stator may be formed with a main body and an access plate positioned radially interior with respect to a portion of the first stator. The first stator and second stator may engage one another about a semi-spherical interface comprised of a convex surface on the second stator and a concave surface on the first stator. The second stator may include an internal channel in which a throttle member may be positioned, wherein a radially interior surface of the throttle member may be positioned a shaft.
Claims20
An annular seal assembly comprising:
- a first stator having a concave surface formed on a radially interior portion thereof;
- a second stator positioned within said first stator, wherein said second stator is formed with a convex surface on a radially exterior portion thereof, wherein said concave surface of said first stator and said convex surface of said second stator form a semispherical interface between said first stator and said second stator, and wherein said second stator is formed with an internal channel on a radially interior surface thereof;
- a singular throttle member positioned within said internal channel of said second stator, wherein said throttle member is formed with an intermediate portion between a first wall and a second wall, and wherein a circumference of said intermediate portion is less than a circumference of said first wall and a circumference of said second wall;
- and
- an access plate engaged with an axially oriented surface of said second stator,
- wherein:
- a surface of said access plate and a surface of said second stator spaced in parallel opposition to the surface of said access plate define a pair of opposing sides of the internal channel, and
- said throttle member directly contacts and slidably engages said pair of opposing sides of the internal channel such that said throttle member slides radially with respect to said second stator in said internal channel.
5 more elements
A seal assembly comprising:
- an annular stator having a concave surface formed on a radially interior portion thereof;
- a second stator positioned within said first stator, wherein said second stator is formed with a convex surface on a radially exterior portion thereof, and wherein said concave surface of said first stator and said convex surface of said second stator form a semispherical interface between said first stator and said second stator;
- an access plate engaged with said second stator, wherein said access plate and said second stator form an internal channel on a radially interior surface of said access plate and said second stator;
- and,
- a singular throttle member positioned within said internal channel, wherein said throttle member is formed with an intermediate portion between a first wall and a second wall, wherein said first wall and said second wall extend radially beyond said intermediate portion,
- wherein:
- a surface of said access plate and a surface of said second stator spaced in parallel opposition to the surface of said access plate define a pair of opposing sides of the internal channel, and
- said throttle member directly contacts and slidably engages said pair of opposing sides of the internal channel such that said throttle member slides radially with respect to said second stator in said internal channel.
5 more elements
An annular seal assembly comprising:
- a first stator having a concave surface formed on a radially interior portion thereof;
- wherein said first stator is configured to be engageable with a housing having a shaft extending from and rotatable with respect to said housing, and wherein said first stator is configured to be positioned over a periphery of said shaft;
- a second stator positioned within said first stator and over said periphery of said shaft;
- and
- an access plate engaged with an axially oriented surface of said second stator, and
- wherein said second stator is formed with a convex surface on a radially exterior portion thereof, wherein said concave surface of said first stator and said convex surface of said second stator form a semispherical interface between said first stator and said second stator, and wherein said second stator is formed with an internal channel on a radially interior surface thereof;
- and,
- a singular throttle member positioned within said internal channel of said second stator and adjacent said periphery of said shaft, wherein said throttle member is formed with an intermediate portion between a first wall and a second wall, wherein said first wall and said second wall extend radially beyond said intermediate portion,
- wherein:
- a surface of said access plate and a surface of said second stator spaced in parallel opposition to the surface of said access plate define a pair of opposing sides of the internal channel, and
- said throttle member directly contacts and slidably engages said pair of opposing sides of the internal channel such that said throttle member slides radially with respect to said second stator in said internal channel.
8 more elements
Dependencies are inferred from the claim text.