Crane bearing assembly
AssigneeSeatrax, Inc.
InventorGeorge Lawrence Wilson
Life of this patent
Estimating the term…
Abstract
An upper bearing assembly for a pedestal crane comprises a partially dome-shaped kingpost head operably engaged by a bearing having a concave bearing face shaped to conform to a segment of said kingpost head, the bearing enclosed within a bearing retainer, the bearing retainer attached to the crane upper works.
Claims8
A bearing assembly for a crane, said crane having a kingpost and an upper works, said bearing assembly comprising:
- said kingpost having a hollow kingpost head attached integrally to the kingpost;
- a hollow conduit extending upwardly through said kingpost head;
- said head having a convex bearing surface;
- a bearing having a concave bearing wear surface;
- said upper works at least partially supported by said bearing;
- said bearing retained in a rigid bearing retainer;
- said bearing retainer connected to said upper works;
- said bearing retainer having a retainer can;
- said retainer can selectively removable;
- said kingpost head having an outer head circumference;
- said bearing comprising a first bearing segment and a second bearing segment;
- said first bearing segment extending around substantially one-half of said outer head circumference:
- and
- said second bearing segment extending around substantially one-half of said outer head circumference.
A bearing assembly for a crane, said crane having a kingpost and an upper works, said bearing assembly comprising:
- said kingpost having a hollow kingpost head attached integrally to the kingpost;
- said kingpost head having a dome-shaped head segment;
- said dome-shaped head segment having an exterior bearing surface;
- a bearing having an inner bearing wear surface;
- said inner bearing surface constructed to conform to at least a portion of said head exterior bearing surface;
- said upper works at least partially supported by said bearing;
- said kingpost head having a head opening proximate an apex of said head;
- an opening in said bearing corresponding to said head opening;
- a conduit extending through said head opening and said bearing opening,
- said kingpost head having an outer head circumference;
- said bearing comprising a first bearing segment and a second bearing segment;
- said first bearing segment extending around substantially one-half of said outer head circumference;
- said second bearing segment extending around substantially one-half of said outer head circumference;
- and
- said bearing retained in a rigid bearing retainer.
A crane bearing assembly for a crane, said crane having a support column and an upper works, comprising:
- said support column having a hollow column head attached integrally to the support column;
- said column head having a head convex surface;
- a bearing having a bearing concave wear surface;
- said bearing concave surface slidingly engageable with said head convex surface;
- a hollow conduit distinct from said hollow column head extending upwardly from said support column;
- said head convex surface and said bearing concave surface surrounding said hollow conduit;
- said bearing functionally intermediate said upper works and said column head;
- a rigid bearing retainer connected to said upper works;
- and
- said bearing retained in said bearing retainer.
Dependencies are inferred from the claim text.