Patent GB846717A successfully refreshed from Google Patents.
← Back to Patent Explorer
GB788941A Expired / Lapsed GB ⏱️ 0.0 years remaining

Improvements in or relating to shutter valves

Assignee: Quickfit and Quartz Ltd
•
Filing: 1954-11-25
•
Granted: —
•
Expires: 1974-11-25
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract 788,941. Manually-actuated valves. QUICKFIT & QUARTZ, Ltd. Nov. 16, 1955 (Nov. 25, 1954], No. 34256/54. Class 135. A shutter valve comprises two glass sideplates 4, 4a apertured at 5, 5a and sealed against oppositely disposed pipe ends 2, 2a, a glass shutter 10 apertured at 11, eccentrically pivoted at 9 and sandwiched between the plates for controlling flow through the pipe ends and resilient means 13 for pressing the plates and shutters together. The plates are welded or sealed by rubber gaskets 3, 3a to the pipe ends and the widened pipe ends carry rubber washers 6, 6a supporting rings 7, 7a carrying spring-loaded bolts, one of which provides the pivot for the shutter.

Inventors

  • 👤 Donald Curtis
  • 👤 Wilhelm Anton Richter

Bibliographic Details

Application Number —
Jurisdiction GB
Data Source google_patents
Last Synchronized 2026-10-23 04:08
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/04; F16K3/06

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