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US 4,018,017 AGranted
Expansion joint means
OwnerTraugott K. Schoopinventor
Life of this patent
Estimating the term…
Abstract
Expansion joint means for bridging structural joints in a flat roof that is to be covered with a roofing material such as roofing felt the means being in the form of a strip and having a stretchable central portion and integrally formed parallel side portions of elastically flexible material such as synthetic rubber.
Claims17
The improvement in expansion joint means in combination with a flat roof and bituminous type roofing material, said combination comprising:
- a flat roof having at least one structural joint formed by adjacent structural components,
- expansion joint means for bridging said joint and including a centre portion made solely of stretchable synthetic rubber and two parallel side portions integrally connected respectively on opposite longitudinal sides of said centre portion and being made of substantially unstretchable material including synthetic rubber, the centre portion being of less thickness than said side portions,
- means securing said side portions respectively to said adjacent structural components with said centre portion over said joint, and
- roofing material of the bituminous type secured on top of said structural components and being bonded to said synthetic rubber of said side portions.
1 more element
Expansion joint means for bridging structural joints in a flat roof that is to be covered with a bituminous type roofing material, comprising:
- a stretchable centre portion and substantially unstretchable parallel longitudinal side portions connected by said stretchable centre portion,
- the side portions and the centre portion being integrally formed with the centre portion being made solely of stretchable synthetic rubber material,
- said side portions being made of substantially unstretchable material including synthetic rubber means for making the side portions bondable to said bituminous type roofing material,
- the said centre portion being of less thickness than the side portions,
- said means being for use in connecting the ends of metal roof flashings and being in the form of a strip of predetermined length, and
- said side portions of synthetic rubber material having one end shorter than said predetermined length and having respective sheet metal strips connected to the said shorter ends of said side portions and extending along and connected to opposite edges of said centre portion to complete the predetermined length of said strip whereby in use the sheet metal strips can be attached to the ends of the metal flashings.
3 more elements
Dependencies are inferred from the claim text.