Spring mounting for sash frame tensioning arrangements

• US 5,365,638 A
• Filed: 01/21/1993
• Issued: 11/22/1994
• Est. Priority Date: 01/21/1992
• Status: Expired due to Term

• Current Assignee: Amesbury Springs Limited
• Original Assignee: Harold K. Braid, Simon C. Braid
• Inventors: Braid, Simon C., Braid, Harold K.
• Primary Examiner(s): Bradley, P. Austin
• Assistant Examiner(s): Mah, Chuck Y.
• Application Number:
  US08/007,628
• Time in Patent Office: 670 Days
• Field of Search: 16/197, 16/DIG. 16
• US Class Current: 16/197
• CPC Class Codes: E05D 13/1276 with coiled ribbon springs, e.g. constant force springs E05D13/1253 takes precedence
• CPC Class Codes: E05Y 2900/148 Windows

Abstract

A mounting element and assembly for a sash frame tensioner used in a sash window frame to support the window in any desired open position, the assembly comprising a channel section member and a sash frame support element slidable in said channel section member. A coiled ribbon spring having a free outer end thereof engaged with said sash frame support member, and a mounting element, the mounting being disposed between the sash frame support member and a coiled body portion of said coiled ribbon spring with a free end of said coiled ribbon spring disposed alongside said mounting, said mounting being secured to said channel section member, directly or indirectly, and in use impinging upon an outer surface of said coiled body portion to retain said coiled body portion in position during uncoiling of said coiled ribbon spring as said sash support member is moved away from said coiled body portion.

Claims

1. A mounting assembly comprising a channel means having a rear wall, side walls and at extremities of said side walls, inwardly turned opposed flanges, a sash frame support means slidable in said channel means, a coiled ribbon spring having a first end engaged with said sash frame support means, and a means for mounting said coiled ribbon spring, the coiled body portion of said coiled ribbon spring having the other end of said coiled ribbon spring within the coil being positioned in said mounting means, said other end of said coiled ribbon spring being free and unattached to said mounting means and said mounting means being secured in said channel means, said mounting means having a raised spine positioned between and in the same plane as said inwardly turned opposed flanges of said channel means whereby rotational motion of said mounting means is inhibited.

2. The mounting assembly of claim 1 wherein the mounting means has a support surface disposed in contact with the outer surface of said coiled body portion of said coiled ribbon spring during movement of said coiled ribbon spring as said sash support means moves in said channel means.

3. The mounting assembly of claim 2 wherein said mounting means has a body portion having an aperture therein, a fixing screw positioned in said aperture by which the mounting means is secured relative to said channel means, a surface of said body portion being concavely curved, said coiled body portion of said coiled ribbon spring being in contact with and supported by said curved surface of said body portion.

4. The mounting assembly of claim 2 in which the mounting means has at least one inter-engagement means by which a plurality of such mounting means may be stacked in inter-engagement.

5. The mounting assembly of claim 4 in which the inter-engagement means comprises a tooth-like projection cooperable on said first mounting means with a corresponding complementary detente in a second mounting means.

6. The mounting assembly of claim 4 in which the inter-engagement means on said first mounting means is in an interference fit with an inter-engagement means on said second mounting means.

7. The mounting assembly of claim 4 in which the inter-engagement means is formed so as to provide a snap fit.

8. A mounting assembly comprising a channel means having a rear wall, side walls and at extremities of said side walls, inwardly turned opposed flanges, a sash frame support means slidable in said channel means, a coiled ribbon spring having an outer end engaged with said sash frame support means, and a means for mounting said coiled ribbon spring, the coiled body portion of said coiled ribbon spring with the other end of said coiled ribbon spring positioned in said mounting means, said mounting means being secured in said channel means and the mounting means having projection means positioned between said inwardly turned opposite flanges of the channel means which cooperate with said flanges of the channel means within which the mounting means is positioned, whereby rotational movement of the mounting means is inhibited.