US3602539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door furniture
Assignee: Micro and Precision Mouldings Cheltenham Ltd
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Filing: 1969-05-09
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Granted: 1971-08-31
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Expires: 1989-05-09
Abstract
Abstract A door handle set comprises a spindle and two handles for detachable fixing on the two ends of the spindle. Each handle has ratchet-fixing means whereby it fitted merely by pushing it on to the spindle. When it is desired to remove one of the handles, the ratchet fixing thereof is freed by pushing the handle towards the door. This enables the other handle, complete with the spindle, to be withdrawn from the opposite side of the door.
Inventors
- 👤 Michael Joseph James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:24
CPC Classifications
E; E05; E05B; E05B3/00; E05B3/04; Y; Y10; Y10T; Y10T292/00; Y10T292/85; Y10T292/869; Y10T403/00; Y10T403/70
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A door handle assembly comprising a spindle adapted to be fitted through a door and having an end portion formed with ratchet teeth, and a door handle removably mounted on said end portion of the spindle and detachable therefrom said handle incorporating ratchet means including two pawllike members respectively adapted to grip the ratchet teeth on the spindle on opposite sides of the latter and ratchet release means which when the assembly is fitted to the door are operative to free the ratchet means, as a result of pushing the handle towards the door, to allow the spindle to be withdrawn from the door.
Claim 2
Dependent Claim
104 words
A door handle assembly comprising a spindle adapted to be fitted through a door and having an end portion formed with ratchet teeth, and a door handle removably mounted on said end portion of the spindle and detachable therefrom said handle incorporating ratchet means including two pawllike members respectively adapted to grip the ratchet teeth on the spindle on opposite sides of the latter and ratchet release means which when the assembly is fitted to the door are operative to free the ratchet means, as a result of pushing the handle towards the door, to allow the spindle to be withdrawn from the door.
Claim 3
Dependent Claim
31 words
A door handle assembly 1 according to claim 1, wherein the pawl meMbers are formed with a row of inclined barblike teeth for engagement with similarly barbed sides of the spindle.
Claim 4
Dependent Claim
18 words
A door handle assembly according to claim 1, wherein the pawl members are mounted separately in the handle.
Claim 5
Dependent Claim
22 words
A door handle assembly according to claim 1, wherein the pawl members are moulded integrally with a collar mounted within the handle.
Claim 6
Dependent Claim
40 words
A door handle assembly according to claim 1, wherein the ratchet release means comprise a projection or projections within the handle for engagement between the pawl members with a wedge or camming action, whereby to urge the pawl members apart.
Claim 7
Dependent Claim
27 words
A handle according to claim 1, wherein the grip of the pawls when the handle is fitted is achieved solely by the resilience of the pawls themselves.
Claim 8
Dependent Claim
18 words
A handle according to claim 1, wherein spring means act to urge the pawls to a spindle-gripping position.
Claim 9
Dependent Claim
128 words
A door handle assembly according to claim 1, including a mounting body adapted to be fixed to the door in order to support the handle in a rotational sense, the handle being movable axially of the spindle and into the mounting body with resultant corresponding movement of the release means relatively to the ratchet means which acts to free the ratchet means, the assembly also including spring means which urge the pawl member to a spindle-gripping position and also urge the handle to its normal outward position with respect to the mounting body so that the handle has to be moved against the spring means to operated the ratchet release means, the handle having wedge surfaces which engage the pawl members under the influence of the spring means.
Claim 10
Dependent Claim
32 words
A door handle assembly according to claim 8, wherein said spring means also operate as a handle return spring which tends to centralize the handle or return it to an inoperative position.
Claim 11
Dependent Claim
40 words
A door handle assembly according to claim 9, wherein the spring means engage a sleeve member mounted in the handle so as to slide axially therein while rotating therewith, which member engages an appropriate camlike formation in the mounting body.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |