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US 4,977,647 AGranted
Double locking snap hook
AssigneeDB Industries, Inc.
InventorScott C. Casebolt
Life of this patent
Estimating the term…
Abstract
A double locking snap hook comprising a shank, a spring biased latch member and a spring biased locking means, the latch member and locking means being biased by two separate screens. One end of the shank defines a hook portion, and the latch member is biased toward a latched position for restraining straps, ropes, etc. within the hook portion. The locking means is biased toward a position which requires that the locking means be deactivated before the latch member may be unlatched or opened.
Claims17
A double locking snap hook, comprising:
- a shank having a first end and a second end, said shank having a return portion at said first end to define a hook, said return portion including a nose spaced from the shank to define a hook throat;
- a spring biased latch member including a latch body, first spring means within said latch body for urging said latch member into a first, latched position, said latch body further including a first end pivotally mounted on said shank and a second end engageable with said hook nose to close said hook throat, said latch member being movable between said first, latched position and a second, open position, said second end of said latch body engaging said hook nose when said latch member is located in said first, latched position;
- and
- spring biased locking means passing through said latch member, said locking means being pivotally attached to said shank for releasably locking said latch member into said first, latched position, said spring biased locking means including a lock body and a second spring means within said lock body for urging said locking means into a locking position in restraining engagement with said latch member when said latch member is located in said first, latched position.
1 more element
A double locking snap hook, comprising:
- a shank having a first end and a second end, said shank having a return portion at said first end to define a hook, said return portion including a nose spaced from the shank to define a hook throat;
- a spring biased latch member including a latch body, first spring means within said latch body for urging said latch member into a first, latched position, said latch body further including a first end pivotally mounted on said shank and a second end engageable with said hook nose to close said hook throat, said latch member being movable between said first, latched position and a second, open position, said second end of said latch body engaging said hook nose when said latch member is located in said first, latched position;
- spring biased locking means passing through said latch member, said locking means being pivotally attached to said shank for releasably locking said latch member into said first, latched position, said spring biased locking means including a lock body and a second spring means within said lock body for urging said locking means into a locking position in restraining engagement with said latch member when said latch member is located in said first, latched position;
- and
- said shank further includes a protruding finger positioning member projecting therefrom in the plane of said shank and positioned adjacent said first end of said latch member, opposing said nose of said hook, as a locating means for said lock body.
2 more elements
A double locking snap hook, comprising:
- a shank having a first end and a second end, said shank having a return portion at said first end to define a hook, said return portion including a nose spaced from the shank to define a hook throat;
- a spring biased latch member including a latch body, first spring means within said latch body for urging said latch member into a first, latched position, said latch body further including a first end pivotally mounted on said shank and a second end engageable with said hook nose to close said hook throat, said latch member being movable between said first, latched position and a second, open position, said second end of said latch body engaging said hook nose when said latch member is located in said first, latched position;
- spring biased locking means passing through said latch member, said locking means being pivotally attached to said shank for releasably locking said latch member into said first, latched position, said spring biased locking means including a lock body and a second spring means within said lock body for urging said locking means into a locking position in restraining engagement with said latch member when said latch member is located in said first, latched position;
- said latch member includes a means for thumb actuation thereon, said means for thumb actuation being mounted to said latch member on the opposite side of said shank from said return portion of said shank with said shank intermediate said means for thumb actuation and said first and second ends of said latch body;
- said lock body includes a finger pad thereon on the opposite side of said shank from said means for thumb actuation of said latch member;
- and
- a protruding positioning member projecting from said shank in close proximity to said finger pad for locating said finger pad with the user's finger.
4 more elements
A double locking snap hook, comprising:
- a shank having a first end and a second end, said shank having a return portion at said first end to define a hook, said return portion including a nose spaced from the shank to define a hook throat;
- a spring biased latch member including a latch body, first spring means within said latch body for urging said latch member into a first, latched position, said latch body further including a first end pivotally mounted on said shank and a second end engageable with said hook nose to close said hook throat, said latch member being movable between said first, latched position and a second, open position, said second end of said latch body engaging said hook nose when said latch member is located in said first, latched position;
- spring biased locking means pivotally attached to said shank for releasably locking said latch member into said first, latched position, said spring biased locking means including a lock body and said spring means for urging said locking means into a locking position in restraining engagement with said latch member when said latch member is located in said first, latched position;
- and
- a protruding finger positioning member projecting from said shank in the plane of said shank and positioned adjacent said first end of said latch member, opposing said nose of said hook, as a locating means for said lock body.
2 more elements
A double locking snap hook, comprising:
- a shank having a first end and a second end, said shank having a return portion at said first end to define a hook, said return portion including a nose spaced from the shank to define a hook throat;
- a spring biased latch member including a latch body, first spring means within said latch body for urging said latch member into a first, latched position, said latch body further including a first end pivotally mounted on said shank and a second end engageable with said hook nose to close said hook throat, said latch member being movable between said first, latched position and a second, open position, said second end of said latch body engaging said hook nose when said latch member is located in said first, latched position;
- spring biased locking means passing through said latch member, said locking means being pivotally attached to said shank for releasably locking said latch member into said first, latched position, said spring biased locking means including a lock body and a second spring means within said lock body for urging said locking means into a locking position in restraining engagement with said latch member when said latch member is located in said first, latched position;
- and
- said latch member pivots about a first pivot means and said locking means pivots about a second pivot means, said second pivot means being located between said first end of said shank and said first pivot means.
2 more elements
A double locking snap hook, comprising:
- a shank having a first end and a second end, said shank having a return portion at said first end to define a hook, said return portion including a nose spaced from the shank to define a hook throat;
- a spring biased latch member including a latch body, first spring means within said latch body for urging said latch member into a first, latched position, said latch body further including a first end pivotally mounted on said shank and a second end engageable with said hook nose to close said hook throat, said latch member being movable between said first, latched position and a second, open position, said second end of said latch body engaging said hook nose when said latch member is located in said first, latched position;
- spring biased locking means passing through said latch member, said locking means being pivotally attached to said shank for releasably locking said latch member into said first, latched position, said spring biased locking means including a lock body and a second spring means within said lock body for urging said locking means into a locking position in restraining engagement with said latch member when said latch member is located in said first, latched position;
- and
- said latch member pivots about a first pivot means and said locking means pivots about a second pivot means, said second pivot means being located between said first end of said shank and said latch member.
2 more elements
Dependencies are inferred from the claim text.