EP0058540A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Brake assembly for dental tray support arm
Assignee: Syntex USA LLC
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Filing: 1982-02-12
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Granted: —
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Expires: 2002-02-12
Abstract
Abstract A fluid actuated brake assembly (110) for use with a parallelogram linkage on a dental tray support arm (22) is described. Floating brake shoes (112,156) positioned on opposite sides of one member (26) of the parallelogram linkage with one of the brake shoes (112) pivotably and slidably attached to the other member (46) of the parallelogram linkage provides a braking and locking effect between the two members (26,46) of the parallelogram linkage to provide an efficient brake for a dental tray support arm. Upon fluid actuation of the brake assembly, the brake shoes grip one member (26) of the parallelogram and form a rigid connection with the other member (46) of the parallelogram to prevent relative movement of the parallelogram linkage members.
Inventors
- 👤 Lawrence Arthur Wilbur
- 👤 Stanley Eugene Gordon
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 14:02
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/22; A; A61; A61G; A61G15/00; A61G15/14; A61G15/16; F16M2200/00; F16M2200/02; F16M2200/06; F16M2200/063
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
106 words
A brake assembly (110) for use with a support arm (16) having a pair of first and second parallel members (26,46); characterised in that the assembly comprises: means (112,156) for releasably engaging a portion of the first of the parallel members (26); means (56) for connecting said engaging means to the second of the parallel members (46); and fluid operated means (140,150) actuating said engaging means (112, 156), whereby relative movement of the first and second parallel membe, (26, 46) is prevented when said actuating means (140, 150) causes said engaging means (112, 156) to engage said portion of the first of the parallel members (26).
Claim 2
Dependent Claim
106 words
A brake assembly (110) for use with a support arm (16) having a pair of first and second parallel members (26,46); characterised in that the assembly comprises: means (112,156) for releasably engaging a portion of the first of the parallel members (26); means (56) for connecting said engaging means to the second of the parallel members (46); and fluid operated means (140,150) actuating said engaging means (112, 156), whereby relative movement of the first and second parallel membe, (26, 46) is prevented when said actuating means (140, 150) causes said engaging means (112, 156) to engage said portion of the first of the parallel members (26).
Claim 3
Dependent Claim
33 words
The brake assembly (110) of Claim 1 wherein. said engaging means (112, 156) comprises a first brake, shoe (112) adapted to engage a first portion of the first of the parallel members (26).
Claim 4
Dependent Claim
32 words
The brake assembly (110) of Claim 2 wherein said connecting means (56) is adapted for pivotably and slidably connecting said first brake shoe (112) to the second of the parallel members (46).
Claim 5
Dependent Claim
77 words
The brake assembly (110) of Claim 3 wherein said first brake shoe (112) has a substantially planar portion (114) for contacting said first portion of the first of said parallel members (26) and an upstanding portion (116) substantially perpendicular to said.planar portion (114), said upstanding portion (116) having an opening (118) therein and said connecting means (56).. comprises a pin (56) for connection to the second of the parallel members (46) and located within said opening (118).
Claim 6
Dependent Claim
33 words
The brake assembly (110) of Claim 4 wherein said engaging means (112, 156) comprises a second brake shoe (156) adapted to contact a second portion of the first of the parallel members (26).
Claim 7
Dependent Claim
29 words
The brake assembly (110) of Claim 5 wherein said first and second brake shoes (112, 156) are positioned on opposed sides of the first of the parallel members (26).
Claim 8
Dependent Claim
19 words
The brake assembly of Claims 5 or 6 wherein said actuation means (140, 150) comprises a flexible diaphragm (150).
Claim 9
Dependent Claim
55 words
The brake assembly of Claim 7 wherein said actuation means (140, 150) further comprises a plate (140) for supporting said second brake shoe (156), said plate (140) being attached to said first brake shoe (112) in a spaced relationship therefrom, said diaphragm (150) being located between said plate (140) and said second brake shoe (156).
Claim 10
Dependent Claim
39 words
The brake assembly of Claim 8 wherein at least one of said first and second brake shoes (112, 156) has a surface (122, 158) with a high coefficient of friction for engaging the first of the parallel members (26).
Claim 11
Dependent Claim
95 words
The brake assembly (110) of any one of claims 1 to 9, in combination with a support arm (16) said support arm (16) including means (70, 76, 60) for connecting said first and second parallel members (26, 46) which comprises a pair of first and second rigid members (76, 60), said first rigid member (76) being pivotably connected to said first and second parallel members (26, 46) adjacent one end thereof and said second rigid member (60) being pivotably connected to said first and second parallel members (26, 46) adjacent to the other end thereof.
Claim 12
Dependent Claim
53 words
The combination of Claim 10 wherein said means (70, 76, 60) for connecting said first and second parallel members (26, 46) includes first and second pivot blocks (70) rigidly attached to said first parallel member (26), adjacent opposite ends thereof and pivotably connected to said first and second rigid members (76, 60), respectively.
Claim 13
Dependent Claim
66 words
The combination of Claim 11 wherein said first rigid member (76) includes a portion (83) thereof adapted for being rotatably received in a rigid support (146), and said first rigid member (76) includes first stop means (88) adapted to engage a portion (152) of the rigid support at a selected position to prevent 360° rotatation of said first rigid member (76) relative to the rigid support.
Claim 14
Dependent Claim
61 words
The combination of Claim 12 wherein said second rigid member (60) includes a portion (72) thereof adapted for rotatably supporting an object, and said second rigid member (60) includes second stop means (88) adapted to engage a portion of the supported object at a selected position to prevent 360° rotation of a supported object relative to said second rigid member (60).
References Cited (Backward Citations)
No citation records indexed.
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