Quick locking pivot shoe

• US 6,968,646 B2
• Filed: 08/29/2003
• Issued: 11/29/2005
• Est. Priority Date: 04/05/2001
• Status: Expired due to Fees

• Current Assignee: Ciphergen Biosystems Incorporated
• Original Assignee: 420820 Ontario Limited
• Inventors: Davies, Sean, Goldenberg, Shaul
• Primary Examiner(s): Strimbu, Gregory J.
• Application Number:
  US10/650,698
• Publication Number:
  US 20040036299A1
• Time in Patent Office: 823 Days
• Field of Search: 491/76, 491/81, 494/45, 494/50, 494/51
• US Class Current: 49/181
• CPC Class Codes: E05B 17/22 Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators E05B39/00 - E05B45/00 take precedence
• CPC Class Codes: E05B 45/083 with contact making either in the striking plate or by movement of the bolt relative to the striking plate
• CPC Class Codes: E05B 63/14 Arrangement of several locks or locks with several bolts, e.g. arranged one behind the other locks having bolts with multiple head E05B15/108; with provision for latching E05B59/00, E05B61/00
• CPC Class Codes: E05B 65/0841 and parallel to the sliding direction of the wings
• CPC Class Codes: E05B 65/0876 cooperating with the slide guide, e.g. the rail
• CPC Class Codes: E05C 1/14 the handle or member moving essentially towards or away from the plane of the wing or frame
• CPC Class Codes: E05C 3/046 in the form of a crescent-shaped cam hooks E05C3/045
• CPC Class Codes: E05C 3/06 with operating handle or equivalent member moving otherwise than rigidly with the bolt
• CPC Class Codes: E05D 15/22 allowing an additional movement E05D15/20 takes precedence
• CPC Class Codes: E05Y 2201/22 Locks
• CPC Class Codes: E05Y 2900/148 Windows
• CPC Class Codes: Y10S 292/20 Window fasteners
• CPC Class Codes: Y10T 292/0802 Sliding and rotary
• CPC Class Codes: Y10T 292/0803 Sliding and swinging
• CPC Class Codes: Y10T 292/0814 Double acting
• CPC Class Codes: Y10T 292/1039 Swinging and camming
• CPC Class Codes: Y10T 292/1041 Rigid operating means
• CPC Class Codes: Y10T 292/68 Keepers

Abstract

A substantially zero clearance clamping pivot shoe having a top camming member and a bottom camming member, each camming member including camming elements. A top clamping element and a bottom clamping element disposed between the camming members for clamping a portion of a track within which the shoe is disposed. The clamping elements each including camming surfaces and braking surfaces such that as a window to which the shoe is attached pivots, the camming surfaces and the camming elements interact to urge the clamping elements together to clamp the portion of the track therebetween.

Claims

1. A substantially zero clearance clamping pivot shoe for a window, said pivot shoe comprising a top and a bottom, camming members having camming elements having leading edges, said camming members having disposed there-between a first and a second track clamping elements each having braking surfaces engageable with a track portion disposed and riding between said track clamping elements in use, said first and second track clamping elements each having camming surfaces engageable with the camming elements, one of said first and second track clamping elements including track engaging parts and the other of said first and second track clamping elements including track supporting glide posts integrally formed therewith for enabling the shoe to glide unclamped yet supported by the track portion when the window is not pivoted, a top of the posts extending above a top of said braking surfaces of the other of said first and second clamping elements until the window is pivoted, wherein when the window is pivoted the leading edges of the camming elements of the camming members override the camming surfaces of the clamping elements thereby causing the braking surfaces of the clamping elements to immediately move toward one another for clamping down on the track portion and preventing pivotal movement of the window, wherein one of the camming elements includes a substantially v-shaped camming surface which engages said camming surfaces disposed within the clamping element which form a substantially v-shaped camming pocket, and the other of the camming elements includes trapezoidal shaped camming surfaces which engage with said camming surfaces of the second clamping element which form compatibly shaped camming recesses to provide the clamping action.

2. The pivot shoe of claim 1 wherein the trapezoidal shaped camming surfaces and compatibly shaped camming recesses are substantially triangular shaped.

3. The pivot shoe of claim 1 or 2 wherein one of the camming members engages with a metal bracket and includes a pivot extension portion which extends through the clamping members, the other of the camming members being secured to the pivot extension portion via a substantially c-shaped clip engaging a groove provided within said pivot extension portion, the bracket includes a slot an outwardly extending leg for engaging with the window, and an attachment bracket for fastening to a side of the window.