US3000293A - Roof jack - Google Patents

Roof jack Download PDF

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Publication number
US3000293A
US3000293A US846471A US84647159A US3000293A US 3000293 A US3000293 A US 3000293A US 846471 A US846471 A US 846471A US 84647159 A US84647159 A US 84647159A US 3000293 A US3000293 A US 3000293A
Authority
US
United States
Prior art keywords
shutter
roof jack
opening
jack
roof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US846471A
Inventor
William R Grace
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRADE WIND MOTORFANS Inc
TRADE-WIND MOTORFANS Inc
Original Assignee
TRADE WIND MOTORFANS Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TRADE WIND MOTORFANS Inc filed Critical TRADE WIND MOTORFANS Inc
Priority to US846471A priority Critical patent/US3000293A/en
Application granted granted Critical
Publication of US3000293A publication Critical patent/US3000293A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/0325—Sky-lights; Domes; Ventilating sky-lights provided with ventilating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

w. R. GRACE Sept. 19, 1961 "VI'ENTOR a b0X-like body having an inlet opening in its bottom` Side and all outlet o enjn in its foTwa d side, a substantia]ly horizonta11y disp0sed, ertuTed )artiti011in the body(0ver1ying the i1'11et opening, a primary Shutter having* front and Tear edges arranged within the body to nor- :nally overlie and close the aperture il1the 1)artition and mea11s pivotany connecting the rear edge of the shutter in the body, the forward edge extending transversely of the outlet opening, a substantia11y vertical1y disposed secndary shutter arranged in the body to nortnally extend across and close the outlet opening a11d neans pivota1ly connecting the Secondaty shutter il the body on an axis intermediate and paralle1 With the top and bottom edges of the Said Shutter the botton1 edge of the Secondary shuttel' normauy occurting adiacent and Stopped by the forward edge of the primary shutter, a trigger iixed t0 and proiecting rearwardly fi'on1 the centfal portion o the Secondary Shutter, said prima;y shutter adapted t0 be pivoted upwardly and Tarvvatdly 't) an open )Sition and away from the Secondary Shutter by .the oW of air int0 the 'body thOugh the nlet opening whereby the Secondary Shutter iS f1 ee ^to piyot to a Substantially hofizontally disposed opel1 positi01 Said pri111ary Shutter engagilg the trigger upon upward movement to pivot and open Said secondary Shutter, said partition having an upwardly tumed sealing lip about the perinete1' of the aperture therein and Said 1)Timary Shutter having a Sea1- ing member Xed thereto to engage the lip when the shutter is iI1 its l10rl11al closed ;0Sitio11.
Refeences ce in the me 0f this patent UNTTED STATES PATENTS McMahan Dec z7, 1938 Pryne Apr 17, 19S6 Carrick Mar. 19 197
US846471A 1959-10-14 1959-10-14 Roof jack Expired - Lifetime US3000293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US846471A US3000293A (en) 1959-10-14 1959-10-14 Roof jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US846471A US3000293A (en) 1959-10-14 1959-10-14 Roof jack

Publications (1)

Publication Number Publication Date
US3000293A true US3000293A (en) 1961-09-19

Family

ID=25298040

Family Applications (1)

Application Number Title Priority Date Filing Date
US846471A Expired - Lifetime US3000293A (en) 1959-10-14 1959-10-14 Roof jack

Country Status (1)

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US (1) US3000293A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383666A (en) * 1980-03-22 1983-05-17 Vereinigte Flugtechnische Werke Gmbh Safety construction for aircraft
US5167578A (en) * 1991-12-02 1992-12-01 Legault Reginald C Soffit mount air ventilator
US6223473B1 (en) * 1999-09-10 2001-05-01 Cid Associates, Inc. Explosion relief system including an explosion relief panel and a blast shaft having two openings
USD882057S1 (en) 2018-12-26 2020-04-21 Juan C. Rizo Angled rectangular roof vent
USD882058S1 (en) 2018-12-26 2020-04-21 Juan C. Rizo Angled gooseneck roof vent

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2141923A (en) * 1936-04-16 1938-12-27 Gen Electric Ventilating apparatus
US2741972A (en) * 1953-08-14 1956-04-17 Pryne & Co Inc Roof jack for ventilating duct
US2785622A (en) * 1953-10-28 1957-03-19 Ventrola Mfg Company Ventilator conduit and shutter assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2141923A (en) * 1936-04-16 1938-12-27 Gen Electric Ventilating apparatus
US2741972A (en) * 1953-08-14 1956-04-17 Pryne & Co Inc Roof jack for ventilating duct
US2785622A (en) * 1953-10-28 1957-03-19 Ventrola Mfg Company Ventilator conduit and shutter assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383666A (en) * 1980-03-22 1983-05-17 Vereinigte Flugtechnische Werke Gmbh Safety construction for aircraft
US5167578A (en) * 1991-12-02 1992-12-01 Legault Reginald C Soffit mount air ventilator
US6223473B1 (en) * 1999-09-10 2001-05-01 Cid Associates, Inc. Explosion relief system including an explosion relief panel and a blast shaft having two openings
USD882057S1 (en) 2018-12-26 2020-04-21 Juan C. Rizo Angled rectangular roof vent
USD882058S1 (en) 2018-12-26 2020-04-21 Juan C. Rizo Angled gooseneck roof vent

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