Title: High load bearing for bridges and similar structures

Abstract: A high load bearing for bridges and other structures comprising upper and lower plates and a load bearing elastomer pad between them. The pad has a concave periphery, and the bearing is provided with means preventing shearing between the upper and lower plates but permitting rotational movement between them. Means are provided which mechanically abut the elastomer pad to limit or prevent lateral movement of the upper and lower surfaces of the elastomer pad without preventing bulging of its periphery.

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Inventors: Fyfe, Edward R. (Burlington, CA, US)
Watson, Stewart C. (Williamsville, NY, US)

Application Number: 919390
Filing Date: 1978-06-26
Publication_date: 1980-02-12
Assignee: Watson Bowman Associates, Inc. (Buffalo, NY)
Primary Class(es): 14/73.5 52/167.1, 52/167.8, 248/580, 248/678
Other Classes:
US Patent Ref:

1572574	Feb, 1926	Stromborg	52/167.
3243236	Mar, 1966	Graham	14/16.
3349418	Oct, 1967	Hein	14/16.
3397856	Aug, 1968	Sullivan	14/16.
3544176	Dec, 1970	Slater	14/16.
3782788	Jan, 1974	Koester	14/16.
3806975	Apr, 1974	Fyfe	14/16.
3908054	Sep, 1975	Ito	14/16.
3921240	Nov, 1975	Fyfe	14/16.
3924907	Dec, 1975	Czernik	14/16.
4033005	Jul, 1977	Czernik	14/16.

Other Refs:
Primary Examiner: Byers, Jr., Nile C.
Assistant Examiner:
Attorney: Cushman, Darby & Cushman