§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US3786213A Expired / Lapsed US ⏱️ 0.0 years remaining

Electric switching device comprising insulating parts comprising an acrylate resin binder

Assignee: ABB Norden Holding AB
•
Filing: 1972-02-14
•
Granted: 1974-01-15
•
Expires: 1992-02-14
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract In an electrical switching device which includes insulating parts subjected to the influence of electric arcs, the insulating parts are formed of mouldings having a binder which consists essentially of a mixture of a linear acrylate polymer and a monomeric acrylate compound which is polyethylene glycol dimethacrylate or a polyethylene glycol diacrylate converted into polymerized form. The binder may contain an additive resin containing ethylenically unsaturated groups in the monomeric acrylate compound in a quantity of at most 25 percent of the total weight of linear acrylate polymer, monomeric acrylate and additive resin. The binder may also contain a powdered filler or a fibrous reinforcing material.

Inventors

  • 👤 G Holmstrom

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 11:53
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/72; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/447

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 31 words
Electric switching device according to claim 1, comprising a high voltage circuit breaker comprising an extinguishing chamber, in which the insulating part constitutes an extinguishing chamber plate in the extinguishing chamber.
Claim 2
Dependent Claim 58 words
Electric switching device according to claim 1, in which the binder contains an additive resin containing ethylenically Unsaturated groups which are polymerisable with the unsaturated groups in the monomeric acrylate compound, the weight of the additive resin constituting at the most 25 per cent of the total weight of linear acrylate polymer, monomeric acrylate compound and additive resin.
Claim 3
Dependent Claim 35 words
Electric switching device according to claim 1, in which the linear acrylate polymer consists essentially of a polymer of at least one member from the group methyl methacrylate, methyl acrylate, ethyl methacrylate and ethyl acrylate.
Claim 4
Dependent Claim 39 words
Electric switching device according to claim 1, in which the monomeric acrylate compound consists essentially of a dimethacrylate or diethacrylate of a member from the group diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, hexaethylene glycol and heptaethylene glycol.
Claim 5
Dependent Claim 40 words
Electric switching device according to claim 1, in which the quantity of linear acrylate polymer is 10 - 40 per cent and the quantity of monomeric acrylate compound 60 - 90 per cent of the total weight of these substances.
Claim 6
Dependent Claim 31 words
Electric switching device according to claim 1, in which the moulding contains a powdered filler in a quantity of at the most 70 per cent of the weight of the moulding.
Claim 7
Dependent Claim 32 words
Electric switching device according to claim 1, in which the moulding contains a fibrous reinforcing material in a quantity of at the most 60 per cent of the weight of the moulding.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-01-14 1977-07-16 1978-01-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-14 1981-07-16 1982-01-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-14 1985-07-16 1986-01-15 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag