US3591311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller assembly
Assignee: Individual
•
Filing: 1969-08-18
•
Granted: 1971-07-06
•
Expires: 1989-08-18
Abstract
Abstract A boat propeller having a pair of foldable propelling blades which are connected to the engine drive shaft through a dual-nut assembly comprising a first nut about the drive shaft and a locking nut about the first nut. The foldable propelling blades are connected to the drive shaft through a bolt which is slidable within a drive shaft sleeve.
Inventors
- 👤 Frank W Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:07
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/20; B63H1/22; B63H1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
A propeller assembly comprising: a housing being secured to a drive shaft, said housing being constructed of a bronze or similar material; collar means in contact with said housing and constructed of zinc alloy or similar material for the purpose of preventing electrolysis from attacking the material of said housing and said drive shaft; first and second propeller blades, said propeller blades being capable of rotation about a single pivot rod from an abutting position to an operating position, said pivot rod being fixed to said housing; said drive shaft being capable of rotation, a first nut being connected to said drive shaft, a locking nut being attached to said first nut and capable of transmitting power therefrom, said locking nut being capable of being rotatingly fixed in position in relation to sAid drive shaft; said first nut includes a polygonal socket being capable of cooperating with said wrench in a torque-transmitting manner thereby forming the attachment of said first nut to said locking nut; and said first and second propeller blades are rotatingly held in position upon said pivot rod by first and second pins, each of said pins to cooperate with a first and second annular groove respectively upon said pivot rod.
Claim 2
Dependent Claim
204 words
A propeller assembly comprising: a housing being secured to a drive shaft, said housing being constructed of a bronze or similar material; collar means in contact with said housing and constructed of zinc alloy or similar material for the purpose of preventing electrolysis from attacking the material of said housing and said drive shaft; first and second propeller blades, said propeller blades being capable of rotation about a single pivot rod from an abutting position to an operating position, said pivot rod being fixed to said housing; said drive shaft being capable of rotation, a first nut being connected to said drive shaft, a locking nut being attached to said first nut and capable of transmitting power therefrom, said locking nut being capable of being rotatingly fixed in position in relation to sAid drive shaft; said first nut includes a polygonal socket being capable of cooperating with said wrench in a torque-transmitting manner thereby forming the attachment of said first nut to said locking nut; and said first and second propeller blades are rotatingly held in position upon said pivot rod by first and second pins, each of said pins to cooperate with a first and second annular groove respectively upon said pivot rod.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |