US3759000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stair nosing structure
Assignee: Balco International Inc
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Filing: 1971-07-29
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Granted: 1973-09-18
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Expires: 1991-07-29
Abstract
Abstract A stair nosing structure for a stair step having a tread surface and a riser or forward facing surface includes an elongated base member and a removable cover strip member interlocked therewith in a co-acting rigid non-slip tread stair nosing forming a portion of the step tread surface. The base member is anchored to the step and the cover strip positioned with a forward edge portion thereof in registry with the riser or forward facing surface of the stair step.
Inventors
- 👤 C Balzer
- 👤 A Reiff
- 👤 E Corman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:26
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04F11/104; E04F11/16; E04F11/163; E04F11/166
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
298 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing riser surface, said stair nosing structure comprising: a. an elongated relatively rigid base member adapted to be mounted on a stair step adjacent a forward facing riser surface thereof, said base member having forward and rear edges and an upper face and a lower face, said forward edge being positioned flush with said riser surface, said base member having an anchor portion adapted to be secured to the stair step; b. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; c. interengaging means on the base member and tread member adjacent one of the forward and rearward edges operative to clamp said tread member to the base member adjacent said edges, said interengaging means including: 1. engageable longitudinally extending portions on said base member and said tread member adjacent respective forward edges thereof; 2. an inclined surface on one of said longitudinally extending portions and positioned relative to the other longitudinally extending portion; 3. a flange member on the other of said longitudinally extending portions, said flange member extending outwardly from one of said base member and said tread member and having a portion engageable by said inclined surface in response to relative lateral movement of said tread member and said base member providing a wedging action forcing said tread member into tight engagement with said base member, said flange member being sufficIently resilient to permit further relative lateral movement to a selected location to position the forward edge of said tread member flush with the forward edge of said base member; d. means adjacent the other of said forward and rearward edges fastening the tread member to the base member.
Claim 2
Dependent Claim
298 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing riser surface, said stair nosing structure comprising: a. an elongated relatively rigid base member adapted to be mounted on a stair step adjacent a forward facing riser surface thereof, said base member having forward and rear edges and an upper face and a lower face, said forward edge being positioned flush with said riser surface, said base member having an anchor portion adapted to be secured to the stair step; b. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; c. interengaging means on the base member and tread member adjacent one of the forward and rearward edges operative to clamp said tread member to the base member adjacent said edges, said interengaging means including: 1. engageable longitudinally extending portions on said base member and said tread member adjacent respective forward edges thereof; 2. an inclined surface on one of said longitudinally extending portions and positioned relative to the other longitudinally extending portion; 3. a flange member on the other of said longitudinally extending portions, said flange member extending outwardly from one of said base member and said tread member and having a portion engageable by said inclined surface in response to relative lateral movement of said tread member and said base member providing a wedging action forcing said tread member into tight engagement with said base member, said flange member being sufficIently resilient to permit further relative lateral movement to a selected location to position the forward edge of said tread member flush with the forward edge of said base member; d. means adjacent the other of said forward and rearward edges fastening the tread member to the base member.
Claim 3
Dependent Claim
19 words
an inclined surface on one of said longitudinally extending portions and positioned relative to the other longitudinally extending portion;
Claim 4
Dependent Claim
19 words
an inclined surface on one of said longitudinally extending portions and positioned relative to the other longitudinally extending portion;
Claim 5
Dependent Claim
68 words
a longitudinally extending downwardly turned portion on said tread member and having a foot portion thereon, said foot portion having an inclined bottom surface and laterally extending opposed flanges, one of said flanges having a forward edge alignable with a forward edge of said forward portion of said base member and the other flange being engageable with the upstanding leg and forwardly extending flange of said base member;
Claim 6
Dependent Claim
68 words
a longitudinally extending downwardly turned portion on said tread member and having a foot portion thereon, said foot portion having an inclined bottom surface and laterally extending opposed flanges, one of said flanges having a forward edge alignable with a forward edge of said forward portion of said base member and the other flange being engageable with the upstanding leg and forwardly extending flange of said base member;
Claim 7
Dependent Claim
64 words
a longitudinally extending downwardly turned portion on said tread member and having a foot portion thereon, said foot portion having an inclined bottom surface and laterally extending opposed flanges, one of said flanges having a forward edge alignable with the forward edge of said base member and the other flange being engageable with the upstanding leg and forwardly extending flange of said base member;
Claim 8
Dependent Claim
64 words
a longitudinally extending downwardly turned portion on said tread member and having a foot portion thereon, said foot portion having an inclined bottom surface and laterally extending opposed flanges, one of said flanges having a forward edge alignable with the forward edge of said base member and the other flange being engageable with the upstanding leg and forwardly extending flange of said base member;
Claim 9
Dependent Claim
59 words
A stair nosing structure as set forth in claim 1 and including: a. stop means on said base member and on said tread member limiting lateral movement of said tread member relative to said base member in effecting said wedging action to stop same when the forward edges of said base member and said tread member are in registry.
Claim 10
Dependent Claim
117 words
a flange member on the other of said longitudinally extending portions, said flange member extending outwardly from one of said base member and said tread member and having a portion engageable by said inclined surface in response to relative lateral movement of said tread member and said base member providing a wedging action forcing said tread member into tight engagement with said base member, said flange member being sufficIently resilient to permit further relative lateral movement to a selected location to position the forward edge of said tread member flush with the forward edge of said base member; d. means adjacent the other of said forward and rearward edges fastening the tread member to the base member.
Claim 11
Dependent Claim
117 words
a flange member on the other of said longitudinally extending portions, said flange member extending outwardly from one of said base member and said tread member and having a portion engageable by said inclined surface in response to relative lateral movement of said tread member and said base member providing a wedging action forcing said tread member into tight engagement with said base member, said flange member being sufficIently resilient to permit further relative lateral movement to a selected location to position the forward edge of said tread member flush with the forward edge of said base member; d. means adjacent the other of said forward and rearward edges fastening the tread member to the base member.
Claim 12
Dependent Claim
105 words
A stair nosing structure as set forth in claim 1 wherein: a. said base member and said tread member each have a longitudinally extending rear flange member adjacent respective rear edges thereof; b. one of said base member and said tread member has an inclined surface adjacent the rear edge thereof and engageable with and positioned relative to a portion of the other of said base member and said tread member whereby the rear flange members of said base member and said tread member are moved into engagement when the tread member is moved laterally of said base member to register the forward edges thereof.
Claim 13
Dependent Claim
88 words
an inclined upper surface on said base member between the forward edge thereof and the upstanding leg thereon and engageable by the inclined bottom surface of said foot portion of said tread member whereby said tread member is forced into engagement withh the upper face of said base member when the tread member is moved laterally of said base member to move said tread member to a selected location; d. means adjacent the other of said forward and rearward edges fastening the tread member to the base member.
Claim 14
Dependent Claim
88 words
an inclined upper surface on said base member between the forward edge thereof and the upstanding leg thereon and engageable by the inclined bottom surface of said foot portion of said tread member whereby said tread member is forced into engagement withh the upper face of said base member when the tread member is moved laterally of said base member to move said tread member to a selected location; d. means adjacent the other of said forward and rearward edges fastening the tread member to the base member.
Claim 15
Dependent Claim
101 words
an inclined upper surface on said forward portion of base member between the forward edge thereof and the upstanding leg thereon and engageable by the inclined bottom surface of said foot portion of said tread member whereby said tread member is forced into engagement with the upper face of said base member when the tread member is moved laterally of said base member to move respective forward edges of said base member and said tread member into registry one with the other; d. means adjacent the other of said forward and rearward edges fastening the tread member to the base member.
Claim 16
Dependent Claim
101 words
an inclined upper surface on said forward portion of base member between the forward edge thereof and the upstanding leg thereon and engageable by the inclined bottom surface of said foot portion of said tread member whereby said tread member is forced into engagement with the upper face of said base member when the tread member is moved laterally of said base member to move respective forward edges of said base member and said tread member into registry one with the other; d. means adjacent the other of said forward and rearward edges fastening the tread member to the base member.
Claim 17
Dependent Claim
199 words
A stair nosing structure as set forth in claim 1 wherein: a. said base member has a longitudinally extending upstanding wall member adjacent the rear edge thereof and having an upper edge and a forwardly and downwardly inclined surface extending below the upper edge of said upstanding wall member; b. said tread member has a longitudinally extending upstanding wall member adjacent the rear edge thereof and having a rearwardly extending portion positioned to engage and be supported on said forwardly and downwardly inclined surface of said upstanding wall member of said base member; c. the rearwardly extending portion of said upstanding wall member of said tread member and the forwardly and downwardly inclined surface of said upstanding wall member of said base member are moved into engagement when the tread member is moved laterally of said base member to register the forward edges thereof; and d. said means securing said tread member to said base member includes a longitudinally extending recess in said base member adjacent the rear edge thereof and a fastening member on said rearwardly extending portion of said upstanding wall member of said tread member and extending into said longitudinally extending recess in said base member.
Claim 18
Dependent Claim
130 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing surface, said stair nosing structure comprising: a. an elongated relatively rigid base member adapted to be mounted on a stair step adjacent a forward facing surface thereof, said base member having forward and rear edges and an upper face and a lower face, said base member having an anchor portion adapted to be secured to the stair step; b. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; c. interengaging means on the base member and tread member adjacent one of the forward and rearward edges operative to clamp said tread member to the base member adjacent said edges, said interengaging means including:
Claim 19
Dependent Claim
130 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing surface, said stair nosing structure comprising: a. an elongated relatively rigid base member adapted to be mounted on a stair step adjacent a forward facing surface thereof, said base member having forward and rear edges and an upper face and a lower face, said base member having an anchor portion adapted to be secured to the stair step; b. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; c. interengaging means on the base member and tread member adjacent one of the forward and rearward edges operative to clamp said tread member to the base member adjacent said edges, said interengaging means including:
Claim 20
Dependent Claim
99 words
A stair nosing structure as set forth in claim 5 wherein: a. said tread member has a metal plate member portion and a long wearing tread material thereon, said tread material having a non-skid surface; b. said metal plate member portion of said tread member and said base member have engageable longitudinally extending portions; c. said forward edge of said one flange on the foot portion being thin; d. said tread material having an upper surface rounded downwardly in a convex curve to said thin forward edge to present a narror metal portion in view below the tread material.
Claim 21
Dependent Claim
130 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing surface, said stair nosing structure comprising: a. an elongated relatively rigid base member adapted to be mounted on a stair step adjacent a forward facing surface thereof, said base member having forward and rear edges and an upper face and a lower face, said base member having an anchor portion adapted to be secured to the stair step; b. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; c. interengaging means on the base member and tread member adjacent one of the forward and rearward edges operative to clamp said tread member to the base member adjacent said edges, said interengaging means including:
Claim 22
Dependent Claim
130 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing surface, said stair nosing structure comprising: a. an elongated relatively rigid base member adapted to be mounted on a stair step adjacent a forward facing surface thereof, said base member having forward and rear edges and an upper face and a lower face, said base member having an anchor portion adapted to be secured to the stair step; b. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; c. interengaging means on the base member and tread member adjacent one of the forward and rearward edges operative to clamp said tread member to the base member adjacent said edges, said interengaging means including:
Claim 23
Dependent Claim
289 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing riser surface, said stair nosing structure comprising: a. an elongated relatively rigid base member having forward and rear edges and an upper face and a lower face, said base member being adapted to be mounted on a stair step adjacent a forward facing riser surface thereof with said forward edge flush with said riser surface; b. an anchor portion on said base member adapted to be secured to the stair step retaining said forward edge flush with said riser surface; c. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; d. said base member has portions defining a recess adjacent the forward edge thereof; e. said tread member has a portion adjacent the forward edge therEof and positioned to be received in the recess in said basemember; f. said recess defining portions of said base member and said tread member portion are sized and shaped with one of said recess defining portions and said tread member portions having an inclined surface engaging the other said portion to effect a wedging action therebetween and tight engagement of said tread member with said base member when said tread member is moved laterally of said base member to register respective forward edges thereof; g. stop means on said base member and on said tread member for limiting relative lateral movement of the tread member on the base member and positioning the forward edge of the tread member flush with the forward edge of the base member; h. means securing said tread member to said base member to hold same thereon and the forward edges flush.
Claim 24
Dependent Claim
289 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing riser surface, said stair nosing structure comprising: a. an elongated relatively rigid base member having forward and rear edges and an upper face and a lower face, said base member being adapted to be mounted on a stair step adjacent a forward facing riser surface thereof with said forward edge flush with said riser surface; b. an anchor portion on said base member adapted to be secured to the stair step retaining said forward edge flush with said riser surface; c. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; d. said base member has portions defining a recess adjacent the forward edge thereof; e. said tread member has a portion adjacent the forward edge therEof and positioned to be received in the recess in said basemember; f. said recess defining portions of said base member and said tread member portion are sized and shaped with one of said recess defining portions and said tread member portions having an inclined surface engaging the other said portion to effect a wedging action therebetween and tight engagement of said tread member with said base member when said tread member is moved laterally of said base member to register respective forward edges thereof; g. stop means on said base member and on said tread member for limiting relative lateral movement of the tread member on the base member and positioning the forward edge of the tread member flush with the forward edge of the base member; h. means securing said tread member to said base member to hold same thereon and the forward edges flush.
Claim 25
Dependent Claim
98 words
A stair nosing structure as set forth in claim 8 wherein: a. said base member has a portion adjacent the rear edge thereof and having a plurality of spaced longitudinally extending ridges thereon; b. said tread member has a portion adjacent the rear edge thereof and having a plurality of spaced longitudinally extending ridges thereon; and c. the ridges on said tread member portion are shaped and positioned to inter-engage with the ridges on said base member portion when the tread member is forced downwardly onto the base member to secure said tread member to said base member.
Claim 26
Dependent Claim
136 words
A stair nosing structure as set forth in claim 8 wherein; a. said base member has a downwardly extending recess therein and positioned adjacent the rear edge thereof and defined by longitudinally extending and laterally spaced opposed surfaces; b. the opposed surfaces defining said recess each have a plurality of spaced longitudinally extending ridges thereon; c. said tread member has a longitudinally extending depending portion and positioned adjacent the rear edge thereof and having a plurality of spaced longitudinally extending ridges thereon; and d. the ridges on the opposed surfaces defining said downwardly extending recess in said base member are shaped and positioned to inter-engage with the ridges on the depending portion of said tread member when the tread member is forced downwardly onto the base member to secure said tread member to said base member.
Claim 27
Dependent Claim
90 words
A stair nosing structure as set forth in claim 8 wherein: a. said recess adjacent the forward edge of said base member extends longitudinally of said base member and opens rearwardly thereof; b. said tread member has portions adjacent the forward edge thereof and positioned to overly the recess defining portions of said base member; and c. the portions of said tread member overlying the recess defining portions of said base member are positioned to define a recess adapted to receive the recess defining portions of said base member therein.
Claim 28
Dependent Claim
303 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing surface, said stair nosing structure comprising: a. an elongated relatively rigid base member adapted to be mounted on a stair step adjacent a forward facing surface thereof, said base member having forward and rear edges and an upper face and a lower face; b. an anchor portion on said base member adapted to be secured to the stair step; c. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; d. means securing said tread member to said base member; e. stop means on said base member and on said tread member for positioning respective forward edges thereof in registry one with the other; f. said base member has portions defining a recess adjacent the forward edge thereof; g. said tread member has a portion adjacent the forward edge thereof and positioned to be received in the recess in said base member; and h. said recess defining portions of said base member and saiD tread member portion are sized and shaped with one of said recess defining portions and said tread member portions having an inclined surface engaging the other said portion to effect a wedging action therebetween and tight engagement of said tread member with said base member when said tread member is moved laterally of said base member to register respective forward edges thereof, i. said base member having a portion adjacent the rear edge thereof and having a plurality of spaced longitudinally extending ridges thereon; j. said tread member having a portion adjacent the rear edge thereof and having a plurality of spaced longitudinally extending ridges thereon; k. a wedge member having a plurality of spaced longitudinally extending ridges on opposite faces thereof; and
Claim 29
Dependent Claim
303 words
A stair nosing structure for a stair step having a tread surface and a forwardly facing surface, said stair nosing structure comprising: a. an elongated relatively rigid base member adapted to be mounted on a stair step adjacent a forward facing surface thereof, said base member having forward and rear edges and an upper face and a lower face; b. an anchor portion on said base member adapted to be secured to the stair step; c. an elongated tread member having forward and rear edges and overlying said base member and engaging the upper face thereof; d. means securing said tread member to said base member; e. stop means on said base member and on said tread member for positioning respective forward edges thereof in registry one with the other; f. said base member has portions defining a recess adjacent the forward edge thereof; g. said tread member has a portion adjacent the forward edge thereof and positioned to be received in the recess in said base member; and h. said recess defining portions of said base member and saiD tread member portion are sized and shaped with one of said recess defining portions and said tread member portions having an inclined surface engaging the other said portion to effect a wedging action therebetween and tight engagement of said tread member with said base member when said tread member is moved laterally of said base member to register respective forward edges thereof, i. said base member having a portion adjacent the rear edge thereof and having a plurality of spaced longitudinally extending ridges thereon; j. said tread member having a portion adjacent the rear edge thereof and having a plurality of spaced longitudinally extending ridges thereon; k. a wedge member having a plurality of spaced longitudinally extending ridges on opposite faces thereof; and
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |