Patent US3759076A successfully refreshed from Google Patents.
US3759076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine propeller lock
Assignee: Individual
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Filing: 1971-12-13
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Granted: 1973-09-18
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Expires: 1991-12-13
Abstract
Abstract An elongated bar for lengthwise insertion longitudinally between the inner and outer sleeve portions of a marine propeller. The bar includes hook structure on the end to be inserted between the sleeve portions for hooked engagement with one of the generally radial lugs supporting the outer sleeve portion from the inner sleeve portion and a slide member is mounted on the other end portion of the rod and includes a laterally offset portion defining a recess opening toward the hooked end of the rod. The slide member is slideable along the rod into position to overlie and telescopingly receive an associated propeller retaining nut in the recess defined by the offset portion and a lock assembly is provided for releasably locking the slide member in position against movement away from the hooked end of the rod whereby access to the propeller retaining nut by a wrench or other nut removing tool is prevented and unauthorized removal of the propeller from the associated propeller shaft is prevented. As a safety measure, the propeller lock is free of portions which would interfere with normal turning of the associated propeller and thus inadvertent operation of the associated motor without first removing the propeller lock will not cause damage to the propeller or other associated running gear even though a turning propeller having the propeller lock mounted thereon will cause an apparent vibration so as to immediately remind a person who has inadvertently started the associated motor that the propeller lock has not been removed.
Inventors
- 👤 J Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:19
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/32; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5615; Y10T70/5619; Y10T70/5624; Y10T70/5628; Y10T70/5854; Y10T70/5867
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
175 words
A propeller locking device for preventing unauthorized removal of marine propellers of the ''''through the hub'''' exhaust type including generally concentric inner and outer sleeve members supported from one another by generally radial webs and with one end of the inner sleeve member comprising a thrust abutment face engageable by a propeller retaining nut, said locking device including an elongated locking bar having a hook portion on one end opening toward the other end, and a lock body mounted on the other end portion of said bar for adjustable guided shifting therealong and including a laterally offset portion for register with and disposition behind an associated propeller nut to prevent its removal, said hook portion being adapted to be removably engaged with one of said webs, the laterally offset portion of said lock body defining a recess opening toward said end of said bar and adapted to receive a propeller retaining nut therein, whereby an associated nut may be completely received within said recess so as to prevent engagement of the nut by a wrench.
Claim 2
Dependent Claim
175 words
A propeller locking device for preventing unauthorized removal of marine propellers of the ''''through the hub'''' exhaust type including generally concentric inner and outer sleeve members supported from one another by generally radial webs and with one end of the inner sleeve member comprising a thrust abutment face engageable by a propeller retaining nut, said locking device including an elongated locking bar having a hook portion on one end opening toward the other end, and a lock body mounted on the other end portion of said bar for adjustable guided shifting therealong and including a laterally offset portion for register with and disposition behind an associated propeller nut to prevent its removal, said hook portion being adapted to be removably engaged with one of said webs, the laterally offset portion of said lock body defining a recess opening toward said end of said bar and adapted to receive a propeller retaining nut therein, whereby an associated nut may be completely received within said recess so as to prevent engagement of the nut by a wrench.
Claim 3
Dependent Claim
28 words
The combination of claim 1 wherein said bar is flat and includes opposite side edge portions, said hook portion projecting outwardly of one of said side edge portions.
Claim 4
Dependent Claim
35 words
The combination of claim 1 wherein said lock body is freely slidable on said bar, a lock member operable to releasably lock said lock body against movement toward said other end of said locking bar.
Claim 5
Dependent Claim
71 words
The combination of claim 3 wherein said lock member comprises a separate lock slide sliding disposed on said bar on the side of said lock structure remote from said one end of said bar and releasably lockable in position on the bar against movement toward said other end thereof and in position to define an abutment engageable by said lock body to limited movement toward the other end of said bar.
Claim 6
Dependent Claim
43 words
The combination of claim 4 wherein said bar and lock member include coacting ratchet means allowing movement of said lock member toward said one end of said bar and releasably preventing movement of said lock member toward the other end of said bar.
Claim 7
Dependent Claim
31 words
The combination of claim 4 wherein said lock member comprises a shank equipped lock and said bar has at least one transverse bore formed therethrough through which said shank is lockable.
Claim 8
Dependent Claim
186 words
A propeller locking device for preventing unau-thorized removal of marine propellers of the type including a cylindrical hub portion to be telescoped onto the rear end of a propeller shaft and retained in position on the shaft by means of a propeller nut threaded onto the shaft behind the hub portion, the hub portion also including generally radially outwardly projecting portions intermediate its opposite ends, said propeller locking device including an elongated locking bar having a hook portion on one end opening toward the other end and adapted to be engaged with the forward edge of one of said radially outwardly projecting portions, a lock body mounted on the other end portion of said bar for adjustable guided shifting therealong and including a laterally offset portion defining a forwardly opening recess opening toward said one end of said bar, said lock body being slidable along said bar toward said one end for telescoping over the rear end of said nut, and means operatively associated with said lock body and bar releasably preventing rearward movement of said lock body along said bar toward the other end thereof.
Claim 9
Dependent Claim
186 words
A propeller locking device for preventing unau-thorized removal of marine propellers of the type including a cylindrical hub portion to be telescoped onto the rear end of a propeller shaft and retained in position on the shaft by means of a propeller nut threaded onto the shaft behind the hub portion, the hub portion also including generally radially outwardly projecting portions intermediate its opposite ends, said propeller locking device including an elongated locking bar having a hook portion on one end opening toward the other end and adapted to be engaged with the forward edge of one of said radially outwardly projecting portions, a lock body mounted on the other end portion of said bar for adjustable guided shifting therealong and including a laterally offset portion defining a forwardly opening recess opening toward said one end of said bar, said lock body being slidable along said bar toward said one end for telescoping over the rear end of said nut, and means operatively associated with said lock body and bar releasably preventing rearward movement of said lock body along said bar toward the other end thereof.
Claim 10
Dependent Claim
222 words
A propeller locking device for preventing unauthorized removal of a marine propeller of the type including a rearwardly facing abut-ment face through which a central propeller shaft receiving bore opens and against which a propeller retaining nut threaded on the rear end of a propeller shaft on which said propeller is mounted may abut to retain the propeller on the shaft, said locking device including an elongated tension member having means on one end adapted for removably engaging a forward portion of a propeller disposed to one side of the central bore formed therethrough against rearward displacement of the tension member relative to the propeller, a lock body slidably mounted on the other end portion of said tension member for adjustable positioning therealong and including a laterally offset portion for register with and disposition behind an associated propeller nut to prevent its removal, the laterally offset portion of said lock body defining a recess opening toward said one end of said tension member and adapted to receive a propeller nut retaining therein, whereby an associated nut may be completely received within said recess so as to prevent engagement of the nut by a wrench, said lock body and tension member including coacting means releasably locking said lock body in a selected position against movement toward said other end of said tension member.
Claim 11
Dependent Claim
222 words
A propeller locking device for preventing unauthorized removal of a marine propeller of the type including a rearwardly facing abut-ment face through which a central propeller shaft receiving bore opens and against which a propeller retaining nut threaded on the rear end of a propeller shaft on which said propeller is mounted may abut to retain the propeller on the shaft, said locking device including an elongated tension member having means on one end adapted for removably engaging a forward portion of a propeller disposed to one side of the central bore formed therethrough against rearward displacement of the tension member relative to the propeller, a lock body slidably mounted on the other end portion of said tension member for adjustable positioning therealong and including a laterally offset portion for register with and disposition behind an associated propeller nut to prevent its removal, the laterally offset portion of said lock body defining a recess opening toward said one end of said tension member and adapted to receive a propeller nut retaining therein, whereby an associated nut may be completely received within said recess so as to prevent engagement of the nut by a wrench, said lock body and tension member including coacting means releasably locking said lock body in a selected position against movement toward said other end of said tension member.
Claim 12
Dependent Claim
37 words
The combination of claim 8 wherein said coacting means includes means for releasably locking said lock body on said tension member in adjusted position along the latter against movement toward the other end of the tension member.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |