Power transmission assembly
Abstract
Abstract 1,264,537. Flexible shafts. PENNSALT CHEMICALS CORP. 24 March, 1969 [29 March, 1968], No. 15222/69. Heading F2U. A flexible shaft 22 (which may comprise superposed helically coiled layers of wire) having ends (e.g. square as shown in chain-dot lines) having parts with a dimension b greater than the overall cross-sectional dimension d between the ends, is housed in a casing 24 having longitudinally extending grooves 40 allowing the ends to pass through and ribs 42 allowing only a small clearance a for the shaft between the ends. The casing 24 may be wholly of P.T.F.E. or polyethylene, or comprise a layer 26 of wire braid or stranded wire-sandwiched between an inner layer 30 of graphite impregnated nylon, and an outer layer of the same material or vinyl. The grooves 40 may be helical and lubricated by a compound of oil in a polymer matrix. The reduced clearance a is stated to reduce noise by 24 db.
Inventors
- 👤 Victor R Decsipkes
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |