US3620490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable hanger
Assignee: Individual
•
Filing: 1970-10-09
•
Granted: 1971-11-16
•
Expires: 1990-10-09
Abstract
Abstract Discloses a cable hanger adapted to fit into a blind hole of a mine roof so as to suspend cable or other power conduit from the roof of a mine. The cable hanger comprises a shaft, bent at one end, to form a hook and threaded at the other end for provision of an expansion shell. The expansion shell consists of an upper relatively immovable member having a smooth axial bore for fitting over the threaded portion of the shaft and a movable lower member containing a smooth axial bore for slidable fit over the threaded portion of said shaft. Each member has an angularly beveled engaging end surface designed to slide diagonally upwardly or downwardly and laterally or medially over the complementary angularly beveled end surface of the other. A threaded nut engageable with the threaded portion of said shaft is welded to an elongated sleeve which has a smooth axial bore fitted over the shaft portion of said hanger and extends outside the blind hole at its lower end to provide a wrench engaging surface for revolving the sleeve and the nut welded thereto. This brings the nut into abutting relationship with the lower movable expansible member of said expansion shell thereby forcing the complementary angularly beveled end surface upwardly and outwardly to expand in said dead hole. Rotating the sleeve in the opposite direction, thereby revolves the nut allowing the expandable member to move downwardly so that the complementary angularly beveled end surfaces come into axial alignment, allowing the entire mechanism to be removed from the blind hole.
Inventors
- 👤 Francis Eugene Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:56
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/08; F16B13/0891; E; E21; E21F; E21F17/00; E21F17/02; F16L; F16L3/00; F16L3/08; F16L3/12; F16L3/133; F16L3/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
374 words
A reusable mine roof cable hanger, which comprises: A. an elongated shaft member having: 1. an elongated inner end portion for insertion in a blind hole of a mine roof and having the upper and thereof threaded and; 2. an outer end portion mounted for positioning partially within said blind hole and extending partially outside said blind hole; B. a hook portion, contiguous with the outer end portion of said shaft; C. an expansion shell located at the upper end of said inner end portion of said shaft comprising; 1. an upper nut 2. a relatively fixed upper expansion member having a smooth, axially extending bore, larger than said shaft for fitting over said inner end portion of said shaft and having an upper flat annular shoulder welded to said upper nut and having an angularly beveled engaging lower end surface; 3. a slidably movable lower expansion member, having an axially extending bore, larger than said shaft, for fitting over said inner end portion of said shaft and having a lower flat annular shoulder and upper complementary angularly beveled engaging end surface for slidable movement on the lower angularly beveled engaging end surface of said relatively fixed upper expansion member and for lateral and medial movement of said lower expansion member in and out of engagement with the wall of said blind hole; D. a lower threaded nut threadably engaged in the threads on thE inner end portion of said threaded shaft and in abutting relationship with the flat annular shoulder of said lower slidably movable lower expansion member; E. a sleeve having a smooth axial bore larger than said shaft and having upper and lower flat annular shoulders, 1. said upper flat annular shoulder being welded to the lower surface of said lower threaded nut 2. said lower flat annular shoulder extending outside of said blind hole and the lower portion of said sleeve providing wrench engaging means for rotating said sleeve and said lower nut to cause said lower nut to travel upwardly and downwardly on said shaft so as to effect slidable movement between the beveled surfaces of said members of said expansion shell and a lateral and medial movement of said lower expansion member relative to said upper expansion member.
Claim 2
Dependent Claim
374 words
A reusable mine roof cable hanger, which comprises: A. an elongated shaft member having: 1. an elongated inner end portion for insertion in a blind hole of a mine roof and having the upper and thereof threaded and; 2. an outer end portion mounted for positioning partially within said blind hole and extending partially outside said blind hole; B. a hook portion, contiguous with the outer end portion of said shaft; C. an expansion shell located at the upper end of said inner end portion of said shaft comprising; 1. an upper nut 2. a relatively fixed upper expansion member having a smooth, axially extending bore, larger than said shaft for fitting over said inner end portion of said shaft and having an upper flat annular shoulder welded to said upper nut and having an angularly beveled engaging lower end surface; 3. a slidably movable lower expansion member, having an axially extending bore, larger than said shaft, for fitting over said inner end portion of said shaft and having a lower flat annular shoulder and upper complementary angularly beveled engaging end surface for slidable movement on the lower angularly beveled engaging end surface of said relatively fixed upper expansion member and for lateral and medial movement of said lower expansion member in and out of engagement with the wall of said blind hole; D. a lower threaded nut threadably engaged in the threads on thE inner end portion of said threaded shaft and in abutting relationship with the flat annular shoulder of said lower slidably movable lower expansion member; E. a sleeve having a smooth axial bore larger than said shaft and having upper and lower flat annular shoulders, 1. said upper flat annular shoulder being welded to the lower surface of said lower threaded nut 2. said lower flat annular shoulder extending outside of said blind hole and the lower portion of said sleeve providing wrench engaging means for rotating said sleeve and said lower nut to cause said lower nut to travel upwardly and downwardly on said shaft so as to effect slidable movement between the beveled surfaces of said members of said expansion shell and a lateral and medial movement of said lower expansion member relative to said upper expansion member.
Claim 3
Dependent Claim
50 words
an outer end portion mounted for positioning partially within said blind hole and extending partially outside said blind hole; B. a hook portion, contiguous with the outer end portion of said shaft; C. an expansion shell located at the upper end of said inner end portion of said shaft comprising;
Claim 4
Dependent Claim
50 words
an outer end portion mounted for positioning partially within said blind hole and extending partially outside said blind hole; B. a hook portion, contiguous with the outer end portion of said shaft; C. an expansion shell located at the upper end of said inner end portion of said shaft comprising;
Claim 5
Dependent Claim
47 words
a relatively fixed upper expansion member having a smooth, axially extending bore, larger than said shaft for fitting over said inner end portion of said shaft and having an upper flat annular shoulder welded to said upper nut and having an angularly beveled engaging lower end surface;
Claim 6
Dependent Claim
47 words
a relatively fixed upper expansion member having a smooth, axially extending bore, larger than said shaft for fitting over said inner end portion of said shaft and having an upper flat annular shoulder welded to said upper nut and having an angularly beveled engaging lower end surface;
Claim 7
Dependent Claim
77 words
said lower flat annular shoulder extending outside of said blind hole and the lower portion of said sleeve providing wrench engaging means for rotating said sleeve and said lower nut to cause said lower nut to travel upwardly and downwardly on said shaft so as to effect slidable movement between the beveled surfaces of said members of said expansion shell and a lateral and medial movement of said lower expansion member relative to said upper expansion member.
Claim 8
Dependent Claim
77 words
said lower flat annular shoulder extending outside of said blind hole and the lower portion of said sleeve providing wrench engaging means for rotating said sleeve and said lower nut to cause said lower nut to travel upwardly and downwardly on said shaft so as to effect slidable movement between the beveled surfaces of said members of said expansion shell and a lateral and medial movement of said lower expansion member relative to said upper expansion member.
Claim 9
Independent Claim
272 words
A method of making a removable mine roof cable hanger, which comprises: A. bending one end of an elongated rod of steel into the form of a hook at the end of an elongated shaft; B. threading the upper end portion of said elongated shaft; C. welding a nut having complementary threads to said shaft to an elongated pipe having a smooth bore larger than said shaft; D. mounting said pipe over said unthreaded portion of said shaft and engaging the threads of said nut with the threads of said shaft and rotating said nut down into proximity with the base of said threaded portion of said shaft; E. cutting a piece of pipe with a smooth axial bore larger than said shaft diagonally relative to the long axis of said pipe to form a first and second expansion member each with an angularly beveled complementary engaging face and a flat annular shoulder; F. placing said first expansion member over said threaded portion of said shaft with the flat annular shoulder in abutting relation with the nut near the base of said threaded portion of said shaft; G. welding the flat annular shoulder of said second expansion member to the lower edge of a second threaded nut having threads engageable with the threads of the threaded portion of said shaft; H. placing said second expansion member over said shaft with the angled, beveled face in complementary abutting relation with said angled beveled face of said first expansion member and engaging the threads of said second nut with the threads of said shaft and turning said nut to mount same onto said shaft.
Claim 10
Independent Claim
272 words
A method of making a removable mine roof cable hanger, which comprises: A. bending one end of an elongated rod of steel into the form of a hook at the end of an elongated shaft; B. threading the upper end portion of said elongated shaft; C. welding a nut having complementary threads to said shaft to an elongated pipe having a smooth bore larger than said shaft; D. mounting said pipe over said unthreaded portion of said shaft and engaging the threads of said nut with the threads of said shaft and rotating said nut down into proximity with the base of said threaded portion of said shaft; E. cutting a piece of pipe with a smooth axial bore larger than said shaft diagonally relative to the long axis of said pipe to form a first and second expansion member each with an angularly beveled complementary engaging face and a flat annular shoulder; F. placing said first expansion member over said threaded portion of said shaft with the flat annular shoulder in abutting relation with the nut near the base of said threaded portion of said shaft; G. welding the flat annular shoulder of said second expansion member to the lower edge of a second threaded nut having threads engageable with the threads of the threaded portion of said shaft; H. placing said second expansion member over said shaft with the angled, beveled face in complementary abutting relation with said angled beveled face of said first expansion member and engaging the threads of said second nut with the threads of said shaft and turning said nut to mount same onto said shaft.
Claim 11
Dependent Claim
86 words
The method of making a removable mine roof cable hanger, as defined in claim 2, the further step of: A. raising said flat annular shoulder of said first expansion member out of abutting relation with said first nut and placing said beveled complementary faces of said first and second expansion members in complementary and axial alignment; B. maintaining said first and second members in complementary and axial alignment while said second nut is being rotated into full engagement with the threaded end portion of said shaft.
Claim 12
Dependent Claim
137 words
a slidably movable lower expansion member, having an axially extending bore, larger than said shaft, for fitting over said inner end portion of said shaft and having a lower flat annular shoulder and upper complementary angularly beveled engaging end surface for slidable movement on the lower angularly beveled engaging end surface of said relatively fixed upper expansion member and for lateral and medial movement of said lower expansion member in and out of engagement with the wall of said blind hole; D. a lower threaded nut threadably engaged in the threads on thE inner end portion of said threaded shaft and in abutting relationship with the flat annular shoulder of said lower slidably movable lower expansion member; E. a sleeve having a smooth axial bore larger than said shaft and having upper and lower flat annular shoulders,
Claim 13
Dependent Claim
137 words
a slidably movable lower expansion member, having an axially extending bore, larger than said shaft, for fitting over said inner end portion of said shaft and having a lower flat annular shoulder and upper complementary angularly beveled engaging end surface for slidable movement on the lower angularly beveled engaging end surface of said relatively fixed upper expansion member and for lateral and medial movement of said lower expansion member in and out of engagement with the wall of said blind hole; D. a lower threaded nut threadably engaged in the threads on thE inner end portion of said threaded shaft and in abutting relationship with the flat annular shoulder of said lower slidably movable lower expansion member; E. a sleeve having a smooth axial bore larger than said shaft and having upper and lower flat annular shoulders,
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |