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US 2003/0189292 A1Published application
Mechanical split seal
AssigneeNortheast Equipment, Inc.
InventorCarl C. Bjornson
Life of this patent
Estimating the term…
Abstract
A split seal component includes two seal face segments in two holder halves and a method of assembly and installation. Each seal face segment has a primary sealing surface and a section extending axially from each primary sealing surface The holder halves are adapted to be joined together to rigidly hold the circular seal face. The holder being constructed and arranged to mount to a shaft.
Claims60
A split seal combination, usable for assembly in a split seal on a shaft, comprising:
- a first seal face including two seal face segments and having a primary sealing surface, an inner wall, an outer wall with an outer periphery and a contact surface usable to aid alignment;
- first and second rotary holder halves to hold the seal face segments of said first seal face;
- a second seal face including two seal face segments;
- and
- first and second stationary holder halves each arranged to receive one of said second seal face segments and each including an abutment surface to contact said contact surface of said first seal face to aid alignment between rotary and stationary elements of the combination;
- the split seal combination configured to permit said abutment and contact surfaces to be axially displaced to provide clearance upon completion of said assembly.
3 more elements
A split seal combination usable on a shaft, comprising:
- a first seal face including two seal face segments and having a primary sealing surface, an inner wall and an outer wall, the inner wall including a first portion with inner diameter approximating the outer diameter of said shaft and a second portion with larger inner diameter, the first seal face also having a contact surface usable to aid alignment;
- first and second rotary holder halves having inner axial walls positionable adjacent at least a portion of said outer wall to position said first seal face segments around said shaft;
- a split o-ring positionable between the second portion of said inner wall and said shaft;
- a second seal face including two seal face segments;
- and
- first and second stationary holder halves each arranged to receive one of said second seal face segments and each including an abutment surface to contact said contact surface of said first seal face to aid alignment between rotary and stationary elements of the combination.
3 more elements
A split seal, comprising:
- a first seal face including two seal face segments and having a contact surface usable to aid alignment;
- first and second rotary holder halves each arranged to receive one of said first seal face segments;
- a second seal face including two seal face segments;
- and
- first and second stationary holder halves each arranged to receive one of said second seal face segments and each including an abutment surface to contact said contact surface of said first seal face to aid alignment between rotary and stationary elements of the split seal.
2 more elements
A split seal, comprising:
- a first seal face including two seal face segments and having a contact surface usable to aid alignment;
- first and second rotary holder halves each arranged to receive one of said first seal face segments;
- a second seal face including two seal face segments;
- and
- first and second stationary holder halves each arranged to receive one of said second seal face segments and each including an abutment surface to contact said contact surface of said first seal face to aid alignment between rotary and stationary elements of the split seal;
- the stationary holder halves each configured to provide pre-installation retention of one of said rotary holder halves before the stationary holder halves are installed on a shaft, to enable pre-installation assembly of the split seal in two unitized halves each having rotary and stationary elements.
3 more elements
A split seal component comprising:
- a circular seal face including two seal face segments and having a primary sealing surface, an outer surface and a radially-extending surface;
- first and second holder halves each including a radially-extending wall and an inner axial wall;
- and
- an adhesive substance adhesively holding at least one surface of each seal face segment to a wall of a holder half.
1 more element
A split seal, comprising:
- a rotary assembly comprising a first seal face including two seal face segments and first and second rotary holder halves each arranged to receive one of said first seal face segments;
- a stationary assembly comprising a second seal face including two seal face segments and first and second stationary holder halves each arranged to receive one of said second seal face segments, the stationary holder halves configured to at least partially surround the first rotary assembly;
- and
- a curved control component interposed between a portion of an outer axially-extending surface of said rotary assembly and a portion of an inner axially-extending surface of each of said stationary holder halves, said curved control component comprising at least one strip configured for mounting contiguous to the complete circumference of the first seal face.
1 more element
A method of assembly of a seal face, comprising:
- (a) inserting seal face segments of a first seal face into first and second rotary halves to provide a rotary assembly;
- (b) inserting seal face segments of a second seal face into first and second stationary holder halves to provide a stationary assembly;
- (c) inserting one of said rotary holder halves into each of said stationary holder halves with a surface of the first seal face contacting an abutment surface of the stationary assembly to provide pre-installation retention of the rotary holder halves;
- and
- (d) fastening the first and second stationary holder halves to each other in position around a shaft.
2 more elements
Dependencies are inferred from the claim text.