Patent SE338576B successfully refreshed from Google Patents.
← Back to Patent Explorer
SE338576B Expired / Lapsed SE ⏱️ 0.0 years remaining

SE338576B - - Google Patents

Assignee: Stal Refrigeration Ab
•
Filing: 1968-05-06
•
Granted: —
•
Expires: 1988-05-06
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract 1,256,391. Refrigerating. STAL REFRIGERATION A.B. 25 April, 1969 [6 May, 1968], No. 21251/69. Heading F4H. In a vapour compression system employing a positive displacement screw compressor 1 and two expansion devices 5 and 8, vapour from a liquid separator 6 passes to an intermediate pressure inlet 12 of the compressor 1. The intermediate pressure inlet may comprise a plurality of openings arranged on a helical line which has the same pitch as the rotor thread, Fig. 2 (not shown).

Inventors

  • 👤 T Brandin
  • 👤 K Lundberg

Bibliographic Details

Application Number —
Jurisdiction SE
Data Source google_patents
Last Synchronized 2026-10-30 19:43
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/04; F04C29/042; F04C29/0007; F25; F25B; F25B1/00; F25B1/04; F25B1/047; F25B2400/00; F25B2400/13; F25B2400/23

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag