Patent US3763916A successfully refreshed from Google Patents.
US3763916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window shade motor
Assignee: Clopay Corp
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Filing: 1971-12-27
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Granted: 1973-10-09
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Expires: 1991-12-27
Abstract
Abstract A window shade motor includes improved apparatus for securing a spring to a body element of the motor. The body element has a recess and the spring includes a bent portion near its end. The bent portion extends into and engages the edges of the recess in order to secure the spring against rotation with respect to the body. The end of the spring beyond the bent portion is positioned to engage the shade roller to maintain the bent portion of the spring within the recess.
Inventors
- 👤 R Gossling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:27
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/56; E06B9/60; F; F03; F03G; F03G1/00; F03G1/02; F03G1/024
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
176 words
A spring motor adapted for seating within a window shade roller and being of the type generally including spear means for non-rotationally engaging a bracket, dowel means connected to said spear means at one end and to a spring means at another end, means connecting said spring means to said roller, and clutch means for releasably holding said shade at variable positions, said means for connecting said spring means to said roller comprising: a motor body provided with a recess; said spring means having a stop means extending into and cooperating with said recess in order to hold said spring against rotation with respect to said body; said stop means comprising a bent portion located near an end of the spring means; and said end of said spring means projecting outwardly from the motor body beyond said bent portion, and being sufficiently long to engage an inner wall of said roller in which said motor is seated and to hold said bent portion within said recess when said spring turns slightly with respect to said body.
Claim 2
Dependent Claim
176 words
A spring motor adapted for seating within a window shade roller and being of the type generally including spear means for non-rotationally engaging a bracket, dowel means connected to said spear means at one end and to a spring means at another end, means connecting said spring means to said roller, and clutch means for releasably holding said shade at variable positions, said means for connecting said spring means to said roller comprising: a motor body provided with a recess; said spring means having a stop means extending into and cooperating with said recess in order to hold said spring against rotation with respect to said body; said stop means comprising a bent portion located near an end of the spring means; and said end of said spring means projecting outwardly from the motor body beyond said bent portion, and being sufficiently long to engage an inner wall of said roller in which said motor is seated and to hold said bent portion within said recess when said spring turns slightly with respect to said body.
Claim 3
Dependent Claim
28 words
A spring motor as in claim 1 wherein said motor body includes a threaded portion and wherein said recess is within a thread line of said threaded portion.
Claim 4
Dependent Claim
22 words
A spring motor as in claim 2 wherein said body includes a tapered nose of decreasing diameter extending from said threaded portion.
Claim 5
Dependent Claim
16 words
A spring motor as in claim 3 wherein said spring is threaded onto said motor body.
Claim 6
Dependent Claim
33 words
A spring motor as in claim 1 wherein said motor body includes an annular channel means for receiving a portion of the shade roller in order to secure said body to said roller.
Claim 7
Dependent Claim
111 words
A spring motor of the type for propelling a window shade roller having an inner wall and wherein a spring is secured to the roller through a motor body at one end and to means engaging a stationary shade support at its other end, the improvement comprising: a threaded portion on said body; a recess in said body, said recess being within a thread line of said threaded portion; stop means formed on said spring for engaging said recess and for holding said spring against rotation with respect to said body; and an integral extension from said spring beyond said stop means extending from said stop means toward said inner wall.
Claim 8
Dependent Claim
111 words
A spring motor of the type for propelling a window shade roller having an inner wall and wherein a spring is secured to the roller through a motor body at one end and to means engaging a stationary shade support at its other end, the improvement comprising: a threaded portion on said body; a recess in said body, said recess being within a thread line of said threaded portion; stop means formed on said spring for engaging said recess and for holding said spring against rotation with respect to said body; and an integral extension from said spring beyond said stop means extending from said stop means toward said inner wall.
Claim 9
Dependent Claim
18 words
A spring motor as in claim 6 wherein said stop means includes a bent portion of said spring.
Claim 10
Dependent Claim
38 words
A spring motor as in claim 7 wherein said extension is of such a length to engage said inner wall and hold said bent portion within said recess when said spring turns slightly with respect to said body.
Claim 11
Dependent Claim
22 words
A spring motor as in claim 8 wherein said body includes a tapered nose of decreasing diameter extending from said threaded portion.
Claim 12
Dependent Claim
32 words
A spring motor as in claim 8 wherein said motor body includes an annular recess means for receiving a portion of said roller in order to secure said body to said roller.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |