CA1315135C - Rondelle pour fixation de couche isolante de couverture - Google Patents

Rondelle pour fixation de couche isolante de couverture

Info

Publication number
CA1315135C
CA1315135C CA000616013A CA616013A CA1315135C CA 1315135 C CA1315135 C CA 1315135C CA 000616013 A CA000616013 A CA 000616013A CA 616013 A CA616013 A CA 616013A CA 1315135 C CA1315135 C CA 1315135C
Authority
CA
Canada
Prior art keywords
washer
protrusion
head
flange
aperture
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
CA000616013A
Other languages
English (en)
Inventor
Riaz Hasan
Louis Thomas
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works 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
Priority claimed from US06/840,152 external-priority patent/US4663910A/en
Priority claimed from US07/014,878 external-priority patent/US4757661A/en
Application filed by Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Application granted granted Critical
Publication of CA1315135C publication Critical patent/CA1315135C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

CA000616013A 1986-03-17 1991-02-28 Rondelle pour fixation de couche isolante de couverture Expired - Lifetime CA1315135C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US840,152 1986-03-17
US06/840,152 US4663910A (en) 1986-03-17 1986-03-17 Washer for roofing insulation
US07/014,878 US4757661A (en) 1986-03-17 1987-02-17 Washer with axial ribs
US014,878 1987-02-17
CA000531603A CA1294158C (fr) 1986-03-17 1987-03-10 Rondelle pour isolant de couverture

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA000531603A Division CA1294158C (fr) 1986-03-17 1987-03-10 Rondelle pour isolant de couverture

Publications (1)

Publication Number Publication Date
CA1315135C true CA1315135C (fr) 1993-03-30

Family

ID=27167682

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000616013A Expired - Lifetime CA1315135C (fr) 1986-03-17 1991-02-28 Rondelle pour fixation de couche isolante de couverture

Country Status (1)

Country Link
CA (1) CA1315135C (fr)

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Legal Events

Date Code Title Description
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121205