Patent ID: 11859757
Assignee: CATERPILLAR INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  E | IPC E  F

Claim 9:
10. A hammer union comprising:
a first conduit section including:
a first beveled surface at a first end of the first conduit section;
a cylindrical surface;
a first conduit bore including:
a first interior beveled surface, and
a first inner surface,

a first surface circumscribing the first conduit bore,
the cylindrical surface being between the first surface and the first beveled surface, and
the cylindrical surface and the first surface forming a seal seat, and

a first edge located between the first surface and the first interior beveled surface;

a second conduit section including:
a second beveled surface at a first end of the second conduit section;
a second conduit bore including:
a second interior beveled surface, and
a second inner surface,

a second surface circumscribing the second conduit bore,
the first beveled surface being configured to abut the second beveled surface,
the second beveled surface extending between the second surface and an exterior surface of the second conduit section,
the second surface being between the second beveled surface and the second interior beveled surface,
the second beveled surface and the second interior beveled surface being on opposite sides of the second surface,
the first beveled surface and the second interior beveled surface being on opposite sides of the second surface, and

the seal seat being between the first beveled surface and the first interior beveled surface, and
a second edge located between the second surface and the second interior beveled surface;

a seal interposed between the first conduit section and the second conduit section,
the seal resting on or being inserted into the seal seat, and
an entirety of the seal being recessed from the first edge and the second edge; and

a thermal coating applied to at least one of the first interior beveled surface or the second interior beveled surface.