Patent US4716989A successfully refreshed from Google Patents.
US4716989A
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Elevator compensating cable
Assignee: Draka Elevator Products Inc
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Filing: 1982-08-04
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Granted: 1988-01-05
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Expires: 2002-08-04
Abstract
Abstract Disclosed is a compensating cable adapted to be used in combination with an elevator cab, counterweight, hoist rope and traveling cable. The compensating cable is composed of a sheath, at least one elongated strength member such as a link chain or stranded wire rope, made from metal or other materials of high tensile strength disposed in the sheath and the volume of the sheath not otherwise occupied by the strength member substantially occupied by a mixture of metal particles and plastic.
Inventors
- 👤 John D. Coleman
- 👤 Donald L. Obst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:16
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/08; H01B7/0823; B; B66; B66B; B66B7/00; B66B7/06; B66B7/068; D; D07; D07B; D07B1/00; D07B1/16; D07B1/162; D07B1/165; H01B7/0054; H01B7/04; D07B1/22; D07B2201/00; D07B2201/20; D07B2201/2075; D07B2201/2082; D07B2501/00; D07B2501/20; D07B2501/2007
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
44 words
An elongated member comprising: (a) an elongated sheath; (b) at least one elongated strength member disposed in said sheath; and, (c) the volume of said sheath not otherwise occupied by said elongated strength member substantially occupied by a mixture of metal particles and plastic.
Claim 2
Dependent Claim
44 words
An elongated member comprising: (a) an elongated sheath; (b) at least one elongated strength member disposed in said sheath; and, (c) the volume of said sheath not otherwise occupied by said elongated strength member substantially occupied by a mixture of metal particles and plastic.
Claim 3
Dependent Claim
21 words
The elongated member of claim 1 wherein said elongated strength member is either a stranded wire rope or a link chain.
Claim 4
Dependent Claim
30 words
The elongated member of claim 1 wherein said sheath is composed of a material selected from the group consisting essentially of rubber, polyamides, polyurethane, polyvinyl chloride, polyolefins, and mixtures thereof.
Claim 5
Dependent Claim
15 words
The elongated member of claim 1 wherein there are a plurality of elongated strength members.
Claim 6
Dependent Claim
34 words
The elongated member of claim 4 wherein said elongated strength members are either all link chains or stranded wire ropes or a combination of at least one link chain and one stranded wire rope.
Claim 7
Dependent Claim
29 words
The elongated member of claim 1 wherein said metal particles are either ferrous or nonferrous metals or mixtures thereof and at least some of which are spherical in shape.
Claim 8
Dependent Claim
22 words
The elongated member of claim 1 wherein said metal particles are steel and have a particle size between 0.02 and 0.04 inches.
Claim 9
Dependent Claim
30 words
The elongated member of claim 1 wherein the volume of the metal particles occupy 50 to 75 percent of the sheath volume not otherwise occupied by the elongated strength member.
Claim 10
Dependent Claim
33 words
The elongated member of claim 1 wherein the volume of the plastic occupying the sheath volume not otherwise occupied by the elongated strength member and metal particles is between 50 and 25 percent.
Claim 11
Dependent Claim
41 words
The elongated member of claim 2 wherein the plastic occupying the volume not otherwise occupied by the elongated strength member and the metal particles is selected from the group consisting essentially of rubber, polyolefins, polyvinyl chloride, polyamides, polyurethane, and mixtures thereof.
Claim 12
Dependent Claim
28 words
The elongated member of claim 1 wherein the particle size of said metal particles is such that it will pass a screen having screen openings of 0.0394 inches.
Claim 13
Dependent Claim
25 words
The elongated member of claim 1 wherein said strength member is made from materials selected from the group comprising steel, iron, polyamides, aramids and graphite.
Claim 14
Dependent Claim
87 words
An elevator system comprising a car, a compensating member, a counterweight, and a hoist rope, the hoist rope being connected to the car and the counterweight, the compensating member connected to the counterweight and the car, the improvement wherein said compensating member is composed of: (a) an elongated sheath (b) at least one elongated strength member disposed in said sheath; and (c) the volume of said elongated sheath not otherwise occupied by said elongated strength member is substantially occupied by a mixture of metal particles and plastic.
Claim 15
Dependent Claim
87 words
An elevator system comprising a car, a compensating member, a counterweight, and a hoist rope, the hoist rope being connected to the car and the counterweight, the compensating member connected to the counterweight and the car, the improvement wherein said compensating member is composed of: (a) an elongated sheath (b) at least one elongated strength member disposed in said sheath; and (c) the volume of said elongated sheath not otherwise occupied by said elongated strength member is substantially occupied by a mixture of metal particles and plastic.
Claim 16
Dependent Claim
21 words
The elevator system of claim 13 wherein said elongated strength member is either a stranded wire rope or a link chain.
Claim 17
Dependent Claim
30 words
The elevator system of claim 13 wherein said sheath is composed of a material selected from the group consisting essentially of rubber, polyamides, polyurethane, polyvinyl chloride, polyolefins, and mixtures thereof.
Claim 18
Dependent Claim
15 words
The elevator system of claim 13 wherein there are a plurality of elongated strength members.
Claim 19
Dependent Claim
29 words
The elevator system of claim 13 wherein said metal particles are either ferrous or nonferrous metals or mixtures thereof and at least some of which are spherical in shape.
Claim 20
Dependent Claim
22 words
The elevator system of claim 13 wherein said metal particles are steel and have a particle size between 0.02 and 0.04 inches.
Claim 21
Dependent Claim
30 words
The elevator system of claim 13 wherein the volume of the metal particles occupy 50 to 75 percent of the sheath volume not otherwise occupied by the elongated strength member.
Claim 22
Dependent Claim
33 words
The elevator system of claim 13 wherein the volume of the plastic occupying the sheath volume not otherwise occupied by the elongated strength member and metal particles is between 50 and 25 percent.
Claim 23
Dependent Claim
42 words
The elevator system of claim 13 wherein the plastic occupying the volume not otherwise occupied by the elongated metallic strength member and the metal particles is selected from the group consisting essentially of rubber, polyolefins, polyvinyl chloride, polyamides, polyurethane and mixtures thereof.
Claim 24
Dependent Claim
28 words
The elevator system of claim 13 wherein the particle size of said metal particles is such that it will pass a screen having screen openings of 0.0394 inches.
Claim 25
Dependent Claim
25 words
The elevator system of claim 13 wherein said strength member is made from materials selected from the group comprising steel, iron, polyamides, aramids and graphite.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |