US3908644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight orthopedic cast material
Assignee: Honeywell International Inc
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Filing: 1974-06-24
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Granted: 1975-09-30
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Expires: 1994-06-24
Abstract
Abstract A system for forming a rigid orthopedic structure comprising bandage material impregnated with at least about 10% by weight of a member of the group consisting of a monomer of the formula: WHEREIN R1 is an acrylic substituent and each R2 independently is H, CH2OH or CH2CH2OH, a prepolymer of said monomer and mixtures thereof; and a dual component curing system for said impregnated bandage including: a first curing component comprising an organic peroxide and a volatile solvent therefor and a second curing component comprising a tertiary amine polymerization promoter. The invention also discloses a process for curing in situ a bandage preimpregnated with a monomer or prepolymer or mixture thereof which is characterized by having active sites capable of further reaction, and which is curable with a dual curing system including an organic peroxide and a polymerization promoter by applying the two curing components to the bandage simultaneously.
Inventors
- 👤 Louis F Neinart
- 👤 Robert C Linares
- 👤 Paul Jeges
- 👤 Zvi Blank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
A; A43; A43D; A43D1/00; A43D1/02; A43D1/022; A61; A61F; A61F13/00; A61F13/04; A61L; A61L15/00; A61L15/07
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
34 words
A SYSTEM FOR FORMING A RIGID ORTHOPEDIC STRUCTURE COMPRISING: (A) A BANDAGE MATERIAL OMPREGNATED WITH AT LEAST ABOUT 10% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF A MONOMER OF THE FORMULA:
Claim 2
Independent Claim
34 words
A SYSTEM FOR FORMING A RIGID ORTHOPEDIC STRUCTURE COMPRISING: (A) A BANDAGE MATERIAL OMPREGNATED WITH AT LEAST ABOUT 10% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF A MONOMER OF THE FORMULA:
Claim 3
Dependent Claim
14 words
A FIRST CURING COMPONENT COMPRISING AN ORGANIC PEROXIDE AND A VOLATILE SOLVENT THEREFOR, AND
Claim 4
Dependent Claim
14 words
A FIRST CURING COMPONENT COMPRISING AN ORGANIC PEROXIDE AND A VOLATILE SOLVENT THEREFOR, AND
Claim 5
Dependent Claim
21 words
The system of claim 1 wherein the acrylic substituent is chosen from the group consisting of acrylate, methacrylate, and glycidyl methacrylate.
Claim 6
Dependent Claim
12 words
The system of claim 1 wherein the impregnant comprises bisphenol A-glycidyl dimethylacrylate.
Claim 7
Dependent Claim
23 words
The system of claim 1 wherein the impregnant is present in an amount of about 35 to 45% by weight of the bandage.
Claim 8
Dependent Claim
30 words
The system of claim 1 wherein the impregnant includes a diluent chosen from the group consisting of ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, and tetraethylene glycol dimethacrylate.
Claim 9
Dependent Claim
27 words
The system of claim 1 wherein the organic peroxide curing component is packaged separately from the solvent and the two are combined at the point of application.
Claim 10
Dependent Claim
18 words
The system of claim 1 wherein the tertiary amine curing component is dissolved in a relatively non-volatile solvent.
Claim 11
Dependent Claim
19 words
The system of claim 1 wherein the impregnant includes up to about 20% by weight of a filler material.
Claim 12
Dependent Claim
22 words
The system of claim 1 wherein the bandage material comprises fiberglass which has been treated with silane coupling agent prior to impregnation.
Claim 13
Dependent Claim
42 words
A process for obtaining a rigid orthopedic structure for a body member comprising: a. encLosing said body member in a bandage impregnated with at least about 10% by weight of a member of the group consisting of a monomer of the formula:
Claim 14
Dependent Claim
42 words
A process for obtaining a rigid orthopedic structure for a body member comprising: a. encLosing said body member in a bandage impregnated with at least about 10% by weight of a member of the group consisting of a monomer of the formula:
Claim 15
Dependent Claim
10 words
A SECOND CURING COMPONENT COMPRISING A TERTIARY AMINE POLYMERIZATION PROMOTER.
Claim 16
Dependent Claim
10 words
A SECOND CURING COMPONENT COMPRISING A TERTIARY AMINE POLYMERIZATION PROMOTER.
Claim 17
Dependent Claim
17 words
The method of claim 10 including applying said first and second curing components to the bandage simultaneously.
Claim 18
Dependent Claim
38 words
The process of claim 10 wherein said bandage is cured by applying the tertiary amine polymerization promoter to the bandage prior to enclosing the member and subsequently spraying the applied bandage with a solution of said organic peroxide.
Claim 19
Dependent Claim
51 words
The process of claim 10 wherein the impregnant comprises bisphenol A-glycidyl dimethacrylate; said first curing component comprises benzoyl peroxide and a solvent comprising a mixture of approximately by weight 50% methylene chloride, 20% trichloroethylene, 10% chloroform and 20% acetone; and said second curing component comprises a solution of dimethyl-p-toluidine in cyclohexane.
Claim 20
Independent Claim
73 words
A METHOD FOR CONSTRUCTING ORTHOPEDIC STRUCTURES COMPRISING APPLYING TO AN INJURED BODY MEMBER A BANDAGE PREIMPREGNATED WITH A MONOMER OR PREPOLYMER OR MIXTURES THEREOF WHICH IS CHARACTERIZED BY HAVING ACTIVES SITES CAPABLE OF FURTHER REACTION, THE MONOMER OR PREPOLYMER OR MIXTURES BEING CURRABLE WITH A DUAL COMPONENT CURING SYSTEM COMPRISING A PEROXIDE AND A POLYMERIZATION PROMOTER AND CURING THE BANDAGE IN SITU BY APPLYING SAID PEROXIDE AND POLYMERIZATION PROMOTER TO THE BANDAGE SIMULTANEOUSLY.
Claim 21
Independent Claim
73 words
A METHOD FOR CONSTRUCTING ORTHOPEDIC STRUCTURES COMPRISING APPLYING TO AN INJURED BODY MEMBER A BANDAGE PREIMPREGNATED WITH A MONOMER OR PREPOLYMER OR MIXTURES THEREOF WHICH IS CHARACTERIZED BY HAVING ACTIVES SITES CAPABLE OF FURTHER REACTION, THE MONOMER OR PREPOLYMER OR MIXTURES BEING CURRABLE WITH A DUAL COMPONENT CURING SYSTEM COMPRISING A PEROXIDE AND A POLYMERIZATION PROMOTER AND CURING THE BANDAGE IN SITU BY APPLYING SAID PEROXIDE AND POLYMERIZATION PROMOTER TO THE BANDAGE SIMULTANEOUSLY.
Claim 22
Dependent Claim
21 words
The method of claim 14 wherein the simultaneous curing is effected using a co-dispensing aerosol system having a single spray orifice.
Claim 23
Dependent Claim
42 words
The method of claim 14 wherein the curing is effected using two containers in which the two curing components are separately packaged and to which is attached a single spray head which merges the two components and emits a single combined stream.
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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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |