US3801424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tackless stair carpet protector
Assignee: Individual
•
Filing: 1971-12-08
•
Granted: 1974-04-02
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Expires: 1991-12-08
Abstract
Abstract A tackless stair nose includes integral riser, nose and step portions, sharpened teeth or the like integral with and depending from the step portion and angles towards the riser portion and a strip of hook type fastening material disposed on the bottom of the step portion opposite the nose. The nose and riser portions produce a springing action which draws the teeth into the carpet when the stair nose or carpet protector is drawn over the carpet of a stair step.
Inventors
- 👤 E Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04F11/104; E04F11/16; E04F11/163; E04F11/17; Y; Y10; Y10T; Y10T428/00; Y10T428/15; Y10T428/24; Y10T428/24008; Y10T428/24479; Y10T428/2457; Y10T428/249921; Y10T428/249923
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
46 words
A stair carpet protector comprising an integral riser section and step portion joined together at a nose section and having a first fastening means including a plurality of sharpened members depending from said step portion, the sharpened ends of which are directed towards said riser section.
Claim 2
Dependent Claim
46 words
A stair carpet protector comprising an integral riser section and step portion joined together at a nose section and having a first fastening means including a plurality of sharpened members depending from said step portion, the sharpened ends of which are directed towards said riser section.
Claim 3
Dependent Claim
26 words
The stair carpet protector recited in claim 1 further including a second fastening means disposed along the bottom of said step portion opposed to said nose.
Claim 4
Dependent Claim
21 words
The stair carpet protector recited in claim 2 wherein said second fastening means comprises a strip of hook type fastening material.
Claim 5
Dependent Claim
20 words
The stair carpet protector of claim 1 wherein said step portion includes a plurality of serrations upon its upper side.
Claim 6
Dependent Claim
31 words
The stair carpet protector of claim 1 wherein said nose and riser portions are fabricated from resilient plastic material to provide a springing action which drives said teeth into said carpet.
Claim 7
Dependent Claim
44 words
The stair carpet protector of claim 1 wherein said protector includes a plurality of sections adjacent the edge of said step portion opposite said nose section which are separated from one another by score lines so as to be easily removed from said protector.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |