Joseph D Scott

US Patent:

39483550, Apr 6, 1976

Filed:

Jan 31, 1975

Appl. No.:

5/545970

Inventors:

Joseph J. Scott - Philadelphia PA

International Classification:

F03G 100

US Classification:

185 39

Abstract:

A variable retracting device comprising a collapsible elongated tubular element providing a cavity therealong for receiving fluid therein and having first and second ends. A fluid reservoir means communicates with the cavity of the tubular element at its first end and has control means for regulating the flow of fluid between the cavity of the tubular element and the reservoir means. A restricting means engages and collapses the tubular element at locations between its first and second ends and is movable along the collapsed portion of the tubular element up to the uncollapsed portion containing fluid. An activating means urges the relative movement of the restricting means along and towards the first end of the tubular element creating a fluid pressure in the uncollapsed portion of the tubular element, whereby the relative movement of the restricting means along and towards the first end of the tubular element takes place with the collapse of the tubular element at the location of the restricting means and at a rate depending upon the flow of fluid from the cavity of the tubular element to the fluid reservoir means and regulated by the control means of the fluid reservoir means.

US Patent:

40310558, Jun 21, 1977

Filed:

May 28, 1975

Appl. No.:

5/581592

Inventors:

John A. Dupont - Glenside PA
Walter Kooch - Feasterville PA
Joseph D. Scott - Philadelphia PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C09D 374
C09D 380
C09D 514

US Classification:

260 296MM

Abstract:

Coating compositions which contain a mildew controlling amount of an isothiazolone are stabilized against chemical decomposition of the isothiazolone by the addition of a metallic compound. Among the compounds which can be used are the acetates, carbonates, chlorides, bromides, nitrates, sulfates, phosphates, and oxides of cadmium, cobalt, copper, lead, manganese, mercury, nickel, silver and zinc.