Bearing seal
First Claim
Patent Images
1. A seal for a shaft bearing having a housing with an opening therein for receiving a shaft:
- said seal comprising a sleeve for receiving a shaft, said sleeve extending through said opening for the shaft and being elongated and positioned axially with respect to the shaft and providing relative axial movement between the shaft and sleeve, a labyrinth sealing section having intermeshing, radially extending, annular grooves and ribs on the inner periphery of the opening and on the external periphery of said sleeve, an annular radially extending sealing surface on the housing adjacent one end of the opening in the housing, and a V-ring seal mounted on said sleeve adjacent said labyrinth section and spaced axially therefrom and having a lip thereon for seating on said radially extending sealing surface, the shaft being capable of sliding axially relative to the sleeve during operation of the bearing to permit expansion and contraction of the shaft, thereby maintaining the proper operating relationship between the various parts of the combination seal on the shaft and in the housing.
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Accused Products
Abstract
A seal for a bearing having a housing with an opening therein for receiving a shaft, in which a sleeve is disposed in the housing opening and has an axial bore therethrough for receiving a shaft. The sleeve has a labyrinth seal section having intermeshing annular grooves and ribs on the inner periphery of the housing opening, and a V-ring section disposed externally of the labyrinth section, the latter section having an annular sealing means mounted on the sleeve and having a lip for seating on an annular sealing surface on the housing.
40 Citations
16 Claims
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1. A seal for a shaft bearing having a housing with an opening therein for receiving a shaft:
- said seal comprising a sleeve for receiving a shaft, said sleeve extending through said opening for the shaft and being elongated and positioned axially with respect to the shaft and providing relative axial movement between the shaft and sleeve, a labyrinth sealing section having intermeshing, radially extending, annular grooves and ribs on the inner periphery of the opening and on the external periphery of said sleeve, an annular radially extending sealing surface on the housing adjacent one end of the opening in the housing, and a V-ring seal mounted on said sleeve adjacent said labyrinth section and spaced axially therefrom and having a lip thereon for seating on said radially extending sealing surface, the shaft being capable of sliding axially relative to the sleeve during operation of the bearing to permit expansion and contraction of the shaft, thereby maintaining the proper operating relationship between the various parts of the combination seal on the shaft and in the housing.
- View Dependent Claims (2, 3, 4, 5)
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6. A seal for a bearing having a housing with an opening therein for receiving a shaft:
- said seal comprising a sleeve for receiving the shaft, said sleeve extending through said opening and being elongated and positioned axially with respect to the shaft and providing relative axial movement between the shaft and sleeve, a labyrinth sealing section having intermeshing, radially extending, annular grooves and ribs on the inner periphery of the opening and on the external periphery of said sleeve, and a yieldable sealing section disposed adjacent said labyrinth section and spaced axially therefrom and including an annular sealing surface on the housing adjacent one end of said labyrinth section, and an annular resilient sealing means mounted on said sleeve and having a lip for seating on said annular sealing surface, the shaft being capable of sliding axially relative to the sleeve during operation of the bearing to permit expansion and contraction of the shaft, thereby maintaining the proper operating relationship between the various parts of the combination seal on the shaft and in the housing.
- View Dependent Claims (7, 8, 9, 10, 11)
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12. In a bearing having a housing with a cavity therein, shaft openings on opposite sides of the housing, and a bearing assembly therein:
- a shaft seal for each of said openings comprising an elongated sleeve disposed axially in the respective opening for relative movement with respect to the shaft, a labyrinth sealing section having intermeshing, radially extending, annular grooves and ribs on the inner periphery of the opening and on the external periphery of said sleeve, an annular radially extending sealing surface on the housing adjacent the external end of the opening therein, and a resilient seal mounted on said sleeve external of said labyrinth section and having a lip thereon for seating on said radially extending sealing surface, said labyrinth sealing section and said resilient seal being disposed axially with respect to one another on the respective seal, the shaft being capable of sliding axially relative to the sleeve during operation of the bearing to permit expansion and contraction of the shaft, thereby maintaining the proper operating relationship between the various parts of the combination seal on the shaft and in the housing.
- View Dependent Claims (13, 14, 15, 16)
Specification