US3669223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rope gripping device
Assignee: Individual
•
Filing: 1970-09-04
•
Granted: 1972-06-13
•
Expires: 1990-09-04
Abstract
Abstract A device for gripping a wire rope or the like wherein a pair of opposed jaws are urged longitudinally of the rope and camming means is provided for urging the jaws toward each other into gripping relation with the rope in response to such longitudinal movement. The particular combination of gripping jaws and camming surfaces achieves an optimum gripping effect. In the illustrative form of the invention the device on which the gripping means is used moves along the length of a fixed rope. Means is provided for actuating the gripping jaws when the relative speed between rope and device exceeds a predetermined amount regardless of whether the rope or the device is stationary.
Inventors
- 👤 Carter H Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:57
CPC Classifications
B; B66; B66D; B66D5/00; B66D5/02; B66D5/16; F; F16; F16G; F16G11/00; F16G11/10; F16G11/105; F16G11/108
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
In a rope gripping device for use in combination with a length of rope, a housing, a pair of opposed jaws carried by said housing on opposite sides respectively of said rope, said jaws being formed respectively with inner opposed parallel rope engaging surfaces and outer camming surfaces converging in one direction, a member swingably supported on a pivot fixedly mounted in said housing outwardly of the outer camming surface of each jaw and adapted to cooperate at its periphery with one of said outer surfaces in rolling engagement therewith, said outer surface and said member urging said jaws toward each other and into gripping relation with the rope when said jaws are moved longitudinally of said rope in said one direction.
Claim 2
Dependent Claim
122 words
In a rope gripping device for use in combination with a length of rope, a housing, a pair of opposed jaws carried by said housing on opposite sides respectively of said rope, said jaws being formed respectively with inner opposed parallel rope engaging surfaces and outer camming surfaces converging in one direction, a member swingably supported on a pivot fixedly mounted in said housing outwardly of the outer camming surface of each jaw and adapted to cooperate at its periphery with one of said outer surfaces in rolling engagement therewith, said outer surface and said member urging said jaws toward each other and into gripping relation with the rope when said jaws are moved longitudinally of said rope in said one direction.
Claim 3
Dependent Claim
49 words
A device according to claim 1 wherein a wheel is provided in peripheral engagement with said rope, a mount for rotatably supporting said wheel, means for yieldably urging said mount and said wheel toward said rope at all times, and a speed responsive device operatively connected to said wheel.
Claim 4
Dependent Claim
38 words
A device according to claim 2 wherein a sear is interposed between saId speed responsive device and said wheel, said sear being adapted to be released when the speed of said speed responsive device exceeds a predetermined amount.
Claim 5
Dependent Claim
42 words
A device according to claim 1 wherein said jaws are each formed at said rope engaging surfaces with a longitudinally extending slot, a plastic material embedded in said slot and adapted at its outer surface to engage said rope to increase traction.
Claim 6
Dependent Claim
18 words
A device according to claim 1 wherein the periphery of said member is formed to a circular arc.
Claim 7
Dependent Claim
48 words
A device according to claim 5 wherein said camming surfaces are inclined toward said rope in said one direction, a second pair of camming surfaces in continuation of said first mentioned camming surfaces and inclined toward said rope at a greater angle than said first mentioned camming surfaces.
Claim 8
Dependent Claim
132 words
A device according to claim 1 wherein continuously acting force means is provided for urging said jaws in said direction, holding means for holding said force means inactive to permit relative movement between said jaws and said rope, and means for activating said force means to grip said rope between said jaws, said last mentioned means including a sensor for sensing the relative speed between said jaws and said rope for activating said force means when said relative speed exceeds a predetermined amount, said sensor including a wheel rotatably supported in said housing and driven by relative movement between said rope and said housing, a speed responsive device rotated by said wheel and cooperatively connected with said holding means for so activating said force means when said speed exceeds a predetermined amount.
Claim 9
Dependent Claim
35 words
A device according to claim 7 wherein said speed responsive device is mounted in a compartment laterally spaced from said housing and separate from said wheel to exclude foreign material from said speed responsive device.
Claim 10
Dependent Claim
49 words
A device according to claim 5 wherein said camming surfaces are straight and the center of swing of said member is spaced in said direction from the normal point of engagement of said member with said camming surfaces before movement of said jaws into gripping relationship with said rope.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |