Vented transmission
This patent describes a vented transmission. It comprises: a housing; a rotary input to the housing; a rotary output from the housing; transmission means within the housing interconnecting the input and the output and including a hollow, rotary shaft journaled within the housing; a vent tube having a first end extending into one end of the hollow shaft and a second end in fluid communication with the exterior of the housing; a shoulder within the hollow shaft and intermediate the ends of the vent tube and defining of relatively smaller diameter section near the first end of the vent tube that is within the hollow shaft and a relatively large diameter section nearer the second end of the vent tube; at least one aperture extending through the hollow shaft from the large diameter section immediately adjacent the shoulder; and a labyrinth seal at the interface of the vent tube and the large diameter section at a location between the aperture (s) and the second end of the vent tube.
- Assignee:
- Sundstrand Corp., Rockford, IL (USA)
- Patent Number(s):
- US 4987795; A
- Application Number:
- PPN: US 7-31398
- OSTI ID:
- 5165842
- Resource Relation:
- Patent File Date: 3 Nov 1989
- Country of Publication:
- United States
- Language:
- English
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