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US3757549A Expired / Lapsed US ⏱️ 0.0 years remaining

Outboard motor clamp screw lock

Assignee: Individual
•
Filing: 1972-04-28
•
Granted: 1973-09-11
•
Expires: 1992-04-28
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Abstract

Abstract This is a device for locking an outboard motor on the transom of a boat so as to make it extremely difficult, if not impossible, for a thief to steal the outboard motor from the boat transom. Outboard motors are usually mounted on the boat transom by having a pair of spaced apart C-clamps secured over the transom. With this device, an elongated housing consisting of a tough metal strong box, partly open in its real wall, is hung over the clamping screw handles, the handles having alignable transverse apertures therethrough, and a tough metal bolt is extended through apertures in the confronting and side walls of the strong box and through the aligned apertures in the clamp screw handle ends. A tough metal lock nut is threaded on at least one end of the bolt, a key being needed and used to unlock the nut before it can be unthreaded. The nut is of the same type that is used for locking demountable automobile wheels on their hubs to prevent theft thereof. The tough metal of the bolt and nut, and also the strong box, is such as is used in the metal walls of a safe or vault. To increase the security, the bolt head and the lock nut may also be countersunk within a guard ring extending externally of the confronting end walls or, for maximum security, a guard thimble is countersunk with the confronting end walls, thus making it impossible to get access thereto with a bolt cutter or hacksaw or other burgler tool.

Inventors

  • 👤 C Mullis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 20:39
CPC Classifications
E; E05; E05B; E05B73/00; E05B73/007; E05B73/0076; F; F16; F16B; F16B41/00; F16B41/005; Y; Y10; Y10T; Y10T137/00; Y10T137/7069; Y10T70/00; Y10T70/40; Y10T70/50; Y10T70/5009; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5774; Y10T70/5854; Y10T70/5867

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 206 words
Locking means for the spaced apart clamp screws (14) of an outboard motor (10) clamp bracket (12) having handles (18) pivotally connected (20) each adjacent one end (22) to the outer end of an associated clamp screw (14) for pivotal movement about an axis perpendicular to the rotational axis of the associated clamp screws (14) and each handle (18) having a transverly extending aperture (26) adjacent its other end; the improvement comprising an elongated parallelepied strong box (36) of tough metal of a length somewhat longer than the distance between the handles (18), of a height slightly greater than the length of the handles (18), of a depth greater than the depth of the handles (18), its back wall having an opening to admit the handles (18) therewithin when in depending position, said back wall providing a ledge depending behind the upper ends (22) of the handles (18) projecting above their pivotal connections, the confronting end walls (38, 40) of said box (36) having apertures aligning with the apertures (26) of said handles (18) when said handles are in depending position, and a tough metal bolt (28) extendible through said aligned apertures (26) and threaded on at least one end to receive a lock nut thereon.
Claim 2
Dependent Claim 206 words
Locking means for the spaced apart clamp screws (14) of an outboard motor (10) clamp bracket (12) having handles (18) pivotally connected (20) each adjacent one end (22) to the outer end of an associated clamp screw (14) for pivotal movement about an axis perpendicular to the rotational axis of the associated clamp screws (14) and each handle (18) having a transverly extending aperture (26) adjacent its other end; the improvement comprising an elongated parallelepied strong box (36) of tough metal of a length somewhat longer than the distance between the handles (18), of a height slightly greater than the length of the handles (18), of a depth greater than the depth of the handles (18), its back wall having an opening to admit the handles (18) therewithin when in depending position, said back wall providing a ledge depending behind the upper ends (22) of the handles (18) projecting above their pivotal connections, the confronting end walls (38, 40) of said box (36) having apertures aligning with the apertures (26) of said handles (18) when said handles are in depending position, and a tough metal bolt (28) extendible through said aligned apertures (26) and threaded on at least one end to receive a lock nut thereon.
Claim 3
Dependent Claim 65 words
The means of protecting the metal boltand lock nut from bolt cutters, hacksaw and hammer a ring guard wherein ring guards (52, 54) are secured on said confronting end walls (38,40) about said bolt apertures for countersinking the bolt ends (30,50) therewithin, said bolt apertures being of a diameter to receive the bolt (28) therethrough, but not to permit the lock nut to pass therethrough.
Claim 4
Dependent Claim 65 words
The means of protecting the metal boltand lock nut from bolt cutters, hacksaw and hammer a ring guard wherein ring guards (52, 54) are secured on said confronting end walls (38,40) about said bolt apertures for countersinking the bolt ends (30,50) therewithin, said bolt apertures being of a diameter to receive the bolt (28) therethrough, but not to permit the lock nut to pass therethrough.
Claim 5
Dependent Claim 17 words
The locking means of claim 2, said ring guard (54) beinG countersunk within said confronting end walls.
Claim 6
Dependent Claim 19 words
The locking means of claim 2, said ring guard (52) extending outwardld from said confronting end walls (38, 40).
Claim 7
Dependent Claim 12 words
The locking means of claim 1, said tough metal being stainless steel.
Claim 8
Dependent Claim 12 words
The locking means of claim 1, said tough metal being case-hardened steel.
Claim 9
Dependent Claim 12 words
The locking means of claim 1, said tough metal being vault-wall metal.

References Cited (Backward Citations)

US2677264A Cited
US2703501A Cited
US3287943A Cited
US3534570A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-10 1977-03-12 1977-09-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-10 1981-03-12 1981-09-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-10 1985-03-12 1985-09-11 $7700.00 Window Closed / Lapsed

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