EP0071398A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Clamp arrangements
Assignee: Allard Way Holdings Ltd
•
Filing: 1982-07-21
•
Granted: —
•
Expires: 2002-07-21
Abstract
Abstract An assembly comprising a board (1) and a mechanism (17) for clamping a marginal portion of the board adjacent an edge between two opposed substantially flat parallel walls (7a). The mechanism (17) is mounted on a major surface of the board (1) and includes a spring strip (21) extending longltudinally along the mechanism, and having corrugations transverse to Its length. An elongate cam (27) extends along the length of the strip (21), overlying the strip, and being supported for rotation about its longitudinal axis. Rotation of the cam (27) causes expansion of the mechanism (17) in a direction normal to the surface, limitation of the expansion by the walls (7a) leading to compression of the corrugations In the strip (21).
Inventors
- 👤 Stafford Malcolm Ellis
- 👤 James Peter Mochrie Keay
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 17:34
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20536; H05K7/20545; H05K7/14; H05K7/1401; H05K7/1402; H05K7/1404; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44368; Y10T24/44573; Y10T24/44581; Y10T24/4459
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
155 words
An assembly comprising a board (1) and a mechanism (17) for clamping a marginal portion of the board adjacent an edge between two opposed substantially flat parallel walls (7a), the mechanism (17) being mounted on a major surface of the board adjacent said edge and being capable of expansion in a direction normal to said marginal surface, characterised in that said mechanism comprises: a spring strip (21) extending in the direction of its length along said marginal portion and having corrugations transverse to its length; and an elongate cam (27) having a longitudinal axis extending along the length of said spring strip (21) overlying said spring strip (21), and being constrained to permit rotational motion only about its longitudinal axis so as by contact between the cam (27) and the spring strip (21) to cause said expansion of the mechanism (17), and on limitation of expansion, compression of the corrugations in the spring strip (21).
Claim 2
Dependent Claim
155 words
An assembly comprising a board (1) and a mechanism (17) for clamping a marginal portion of the board adjacent an edge between two opposed substantially flat parallel walls (7a), the mechanism (17) being mounted on a major surface of the board adjacent said edge and being capable of expansion in a direction normal to said marginal surface, characterised in that said mechanism comprises: a spring strip (21) extending in the direction of its length along said marginal portion and having corrugations transverse to its length; and an elongate cam (27) having a longitudinal axis extending along the length of said spring strip (21) overlying said spring strip (21), and being constrained to permit rotational motion only about its longitudinal axis so as by contact between the cam (27) and the spring strip (21) to cause said expansion of the mechanism (17), and on limitation of expansion, compression of the corrugations in the spring strip (21).
Claim 3
Dependent Claim
27 words
An assembly according to Claim 1 in which the mechanism (17) includes a channel member (23) which substantially encloses said cam (27) and said spring strip (21).
Claim 4
Dependent Claim
25 words
An assembly according to Claim 2 in which said cam (27) lies between said spring strip (21) and the web of said channel member (23).
Claim 5
Dependent Claim
28 words
An assembly according to any one of the preceding claims in which the elastic range of said spring strip (21) is less than the throw of said cam.
Claim 6
Dependent Claim
32 words
An assembly according to any one of Claims 1, 2 and 3 in which a shim (25) is interposed between said spring strip (21) and said marginal portion of the board (1).
Claim 7
Dependent Claim
32 words
An assembly according to any one of the preceding Claims wherein said cam (27) carries a pin (39) whose angular position indicates whether the clamp mechanism (17) is in an operative position.
Claim 8
Dependent Claim
52 words
An assembly according to any one of the preceding claims in which said cam (27) is supported for rotation by two posts (31,33) secured through said board towards either end of said edge, both posts having a bore (31c, 33c) into which a respective end portion (27b, 27c) of said cam fits.
Claim 9
Dependent Claim
39 words
An assembly according to Claim 7 in which said bores (31c, 33c) allow rotation of said end portions (27b, 27c) within the bores, and also allow limited movement of the cam in a direction normal to said marginal surface.
Claim 10
Dependent Claim
39 words
An assembly according to Claim 7 or Claim 8 in which a projection (33d) on one of said posts (33) co-operates with a lug (37a) connected to said cam to limit rotation of said cam to substantially ninety degrees.
Claim 11
Dependent Claim
29 words
An assembly according to Claims 7, 8 or 9 when dependent on Claim 2 in which said channel member (23) is a snap fit on said posts (31, 33).
Claim 12
Dependent Claim
46 words
An assembly according to Claim 10 in which a groove (32) formed on one of said posts (31) mates with a portion (23c) of the adjacent channel member (23) to limit the movement of said channel member (23) in one direction along said longitudinal axis. -
Claim 13
Dependent Claim
30 words
An assembly according to any one of Claims 1 to 6 in which said cam (107) is supported for rotation by a bracket (111) towards one end of said edge.
Claim 14
Dependent Claim
49 words
An assembly according to Claim 12 in which an extension of said cam (107c) fits into an aperture defined within said bracket (111), which allows rotation of said end portion within said aperture, and also allows limited movement of the cam in a direction normal to said marginal surface.
Claim 15
Dependent Claim
36 words
An assembly according to Claims 12 or 13 when dependent on Claim 2 in which a post (109) is provided at one end of said edge, onto which said channel member (105) is a snap fit.
Claim 16
Dependent Claim
51 words
An assembly according to any one of the preceding claims in which said cam (27) has a first substantially flat surface (29), and a second curved surface, both surfaces extending along the length of the cam (27), said first surface (29) lying closer to said longitudinal axis than said second surface.
Claim 17
Dependent Claim
22 words
An assembly according to any one of Claims 1 to 14 in which said cam (107) is substantially rectangular in cross section.
Claim 18
Dependent Claim
21 words
An assembly according to any one of the preceding Claims in which said spring strip (21) is a wave shaped element.
Claim 19
Dependent Claim
22 words
An assembly according to any one of Claims 1 to 16 in which said spring strip (21) is a zigzag shaped element.
Claim 20
Dependent Claim
20 words
An assembly according to Claim 18 in which said spring strip (21) is formed in an acute angled key pattern.
Claim 21
Dependent Claim
19 words
The mechanism (17) defined in Claim 1 for use in an assembly according to any of the preceding Claims.
References Cited (Backward Citations)
US2984457A
Cited
DE1816553U
Cited
DE1575282B1
Cited
DE2049491A1
Cited
DE2451426B1
Cited
US3992653A
Cited
US4093971A
Cited
US4157583A
Cited
US4214292A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.