CA2010948A1 - Street manhole cover lifting device - Google Patents

Street manhole cover lifting device

Info

Publication number
CA2010948A1
CA2010948A1 CA2010948A CA2010948A CA2010948A1 CA 2010948 A1 CA2010948 A1 CA 2010948A1 CA 2010948 A CA2010948 A CA 2010948A CA 2010948 A CA2010948 A CA 2010948A CA 2010948 A1 CA2010948 A1 CA 2010948A1
Authority
CA
Canada
Prior art keywords
collar
ring
base wall
wall
sit
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.)
Granted
Application number
CA2010948A
Other languages
French (fr)
Other versions
CA2010948C (en
Inventor
Alain Prescott
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002010948A priority Critical patent/CA2010948C/en
Publication of CA2010948A1 publication Critical patent/CA2010948A1/en
Application granted granted Critical
Publication of CA2010948C publication Critical patent/CA2010948C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

MANHOLE COVER ANNULAR SUPPORT FOR REPAVED STREET

ABSTRACT OF THE DISCLOSURE

In a street manhole defining an elongated manhole duct provided with a rigid collar at its top mouth, the collar having a radially inward annular cavity defining a base wall, parallel to the plane of the collar and a side wall, orthogonal to the base wall. The collar further defines a top wall parallel to the base wall. A spacer device is provided for raising the cover level from the collar base wall, and defines: (a) a first rigid ring, destined to sit on the collar base wall; (b) a second rigid ring, diametrally larger than the first ring and destined to sit on the collar top wall; and (c) connecting tongues, for coaxially interconnecting the rings about spaced planes, the connecting tongues being flexible and capable of bending under load, so as to bring the first ring to sit against the collar base wall and the second ring to sit against the collar top wall.
The tongues will bend longitudinally so as to pivot about their lengthwise axes upon being responsive to a biasing load being applied transversely to the plane of at least one of the cover member and the second ring.
CA002010948A 1990-02-26 1990-02-26 Street manhole cover lifting device Expired - Lifetime CA2010948C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002010948A CA2010948C (en) 1990-02-26 1990-02-26 Street manhole cover lifting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002010948A CA2010948C (en) 1990-02-26 1990-02-26 Street manhole cover lifting device

Publications (2)

Publication Number Publication Date
CA2010948A1 true CA2010948A1 (en) 1990-09-10
CA2010948C CA2010948C (en) 1992-11-17

Family

ID=4144386

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002010948A Expired - Lifetime CA2010948C (en) 1990-02-26 1990-02-26 Street manhole cover lifting device

Country Status (1)

Country Link
CA (1) CA2010948C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5462386A (en) * 1994-09-02 1995-10-31 Prescott; Alain Watertight raising band for manhole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5462386A (en) * 1994-09-02 1995-10-31 Prescott; Alain Watertight raising band for manhole

Also Published As

Publication number Publication date
CA2010948C (en) 1992-11-17

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry