US3772733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Castors, particularly in the form of swivel castors
Assignee: Tente Rollen GmbH and Co
•
Filing: 1972-01-28
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Granted: 1973-11-20
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Expires: 1992-01-28
Abstract
Abstract A castor, particularly in the form of a swivel castor, is provided with a locking mechanism for locking the running wheel against running and/or swivelling movement. The locking comprises as locking member a press component which is axially moveable in a guide bush arranged at the castor fork. The press component can be pressed against the pressure of a spring into its locking position and then holds the locking mechanism in its locking position. The press component has at a point on its periphery at least one latching notch by means of which the press component can latch in its locking position under the counterpressure of the spring against a latching edge and is then held latched by the stressed spring. A release lever is provided by which the press component can be unlatched again, against the pressure of the spring. The guide bush may be arranged substantially vertically at the castor fork, and the press component notched on its periphery may project beyond the upper surface of the guide bush and may form a pushbutton for foot actuation.
Inventors
- 👤 H Stosberg
- 👤 G Reinhards
- 👤 S Engels
- 👤 H Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:24
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/02; B60B33/021
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
148 words
A castor, particulary in the form of a swivel castor, comprising a castor fork with a running wheel and a locking mechanism for locking said running wheel against a movement, including as locking member a press component which is axially moveable in a guide bush arranged at the castor fork and which can be pressed against the pressure of a spring into its locking position and then holds the locking mechanism in its locking position, characterised in that the press component has at a point on its periphery at least one latching notch by means of which the press component can latch in its locking position under the counterpressure of the spring against a latching edge and is then held latched by the stressed spring, and in that a release lever is provided by which the press component can be unlatched again, against the pressure of the spring.
Claim 2
Dependent Claim
148 words
A castor, particulary in the form of a swivel castor, comprising a castor fork with a running wheel and a locking mechanism for locking said running wheel against a movement, including as locking member a press component which is axially moveable in a guide bush arranged at the castor fork and which can be pressed against the pressure of a spring into its locking position and then holds the locking mechanism in its locking position, characterised in that the press component has at a point on its periphery at least one latching notch by means of which the press component can latch in its locking position under the counterpressure of the spring against a latching edge and is then held latched by the stressed spring, and in that a release lever is provided by which the press component can be unlatched again, against the pressure of the spring.
Claim 3
Dependent Claim
187 words
A castor as claimed in claim 1, particularly in the form of a swivel castor, comprising a castor fork with a running wheel and a locking mechanism for locking said running wheel against a movemeNt, including as locking member a press component which is axialy moveable in a guide bush arranged at the castor fork and which can be pressed against the pressure of a spring into its locking position and then holds the locking mechanism in its locking position, characterised in that the guide bush is arranged substantially vertically at the castor fork and the press component projects beyond the upper surface of said guide bush and forming a pushbutton for foot actuation, and in that the press component has at a point on its periphery at least one latching notch by means of which the press component can latch in its locking position under the counterpressure of the spring against a latching edge and is then held latched by the stressed spring, and in that a release lever is provided by which the press component can be unlatched again, against the pressure of the spring.
Claim 4
Dependent Claim
215 words
A castor as claimed in claim 1, particularly in the form of a swivel castor, comprising a castor fork with a running wheel and a locking mechanism for locking said running wheel against a movement, including as locking member a press component which is axially moveable in a guide bush arranged at the castor fork and which can be pressed against the pressure of a spring into its locking position and then holds the locking mechanism in its locking position, characterised in that the press component has at a point on its periphery at least one latching notch by means of which the press component can latch in its locking position under the counterpressure of the spring against a latching edge, and in that the press component is substantially narrower than the guide hole of said guide bush and has a sufficiently large lateral play for it to be able to be canted in said guide bush by the counterpressure of the spring and thus for it to be possible to latch by said at least one latching notch against the latching edge and is then held latched by the stressed spring, and in that a release lever is provided by which the press component can be unlatched again, against the pressure of the spring.
Claim 5
Dependent Claim
249 words
A castor as claimed in claim 2, particularly in the form of a swivel castor, comprising a castor fork with a running wheel and a locking mechanism for locking said running wheel against a movement, including as locking member a press component which is axially moveable in a guide bush arranged at the castor fork and which can be pressed against the pressure of a spring into its locking position and then holds the locking mechanism in its locking position, characterised in that the guide bush is arranged substantially vertically at the castor fork and the press component projects beyond the upper surface of said guide bush and forming a pushbutton for foot actuation, and in that the press component has at a point on its periphery at least one latching notch by means of which the press component can latch in its locking position under the counterpressure of the spring against a latching edge, and in that the press component is substantially narrower than the guide hole of the guide bush and has a sufficiently large lateral play for it to be able to be canted in said guide bush by the counterpressure of the spring and thus for it to be possible to latch by said at least one latching notch against the latching edge and is then held latched by the stressed spring, and in that a release lever es provided by which the press component can be unlatched again, against the pressure of the spring.
Claim 6
Dependent Claim
25 words
A castor as claimed in claim 1, characterised in that the press component has at a point on its periphery a multiplicity of latching notches.
Claim 7
Dependent Claim
33 words
A castor as claimed in claim 3, characterised in that the lower rim edge of the guide hole of said guide bush forms said latching edge for the latching of the press component.
Claim 8
Dependent Claim
33 words
A castor as claimed in claim 3, characterised in that the press component is provides with a foot pedal which serves as a release lever for the unlatching again of the press component.
Claim 9
Dependent Claim
60 words
A castor aS claimed in claim 7, characterised in that the press component is fixed on the foot pedal and said ffot pedal has an oblique surface which when the press component is depressed comes to rest against a counterpressure leaf spring and in this way favours the canting of the press component and its latching against said latching edge.
Claim 10
Dependent Claim
20 words
A castor as claimed in claim 1, characterised in that the latching edge is formed by a latching leaf spring.
Claim 11
Dependent Claim
173 words
A castor as claimed in claim 1, particularly in the form of a swivel castor, comprising a castor fork with a running wheel and a locking mechanism for locking said running wheel against a movement, including as locking member a press component which is axially moveable in a guide bush arranged at the castor fork and which can be pressed against the pressure of a spring into its locking position and then holds the locking mechanism in its locking position, characterised in that the press component has at a point on its periphery at least one latching notch by means of which the press component can latch in its locking position under the counterpressure of the spring against a latching edge which is formed by a latching leaf spring and is then held latched by said stressed leaf spring, and in that the latching leaf spring is extended to form a foot pedal which serves as a release lever for the unlatching again of the press component, against the pressure of said spring.
Claim 12
Dependent Claim
25 words
A castor as claimed in claim 10, characterised in that the press component has at a point on its periphery a multiplicity of latching notches.
Claim 13
Dependent Claim
30 words
A castor as claimed in claim 1, characterised in that the press component is of cylindrical form and said at least one latching notch is arranged round the cylinder periphery.
Claim 14
Dependent Claim
33 words
A castor as claimed in claim 1, characterised in that said at least one latching notch is of sawtooth form, the radially straight tooth flank serving for the latching against said latching edge.
Claim 15
Dependent Claim
20 words
A castor as claimed in claim 1, characterised in that the press component is fixed on a counterpressure leaf spring.
Claim 16
Dependent Claim
147 words
A castor as claimed in claim 1, particulary in the form of a swivel castor, comprising a castor fork with a running wheel and a locking mechanism for locking said running wheel against a movement, including as locking member a press component which is axially moveable in a guide bush arranged at the castor fork and which can be pressed against the pressure of a spring into its locking position and then holds the locking mechanism in its locking position, characterised in that the press component has at its periphery a sprung latching pawl which in the locked position of the press component can latch under the counterpressure of the spring against a latching edge and is then held latched by the stressed spring, and in that a release lever is provided by which the press component can be unlatched again, against the pressure of said spring.
Claim 17
Dependent Claim
23 words
A castor as claimed in claim 15, characterised in that said latching pawl has a multiplicity of latching notches arranged one above another.
Claim 18
Dependent Claim
36 words
A castor as claimed in claim 15, characterised in that the latching pawl of the press component is provided with a foot pedal which serves as said release lever for the unlatching of the press component.
References Cited (Backward Citations)
US2684734A
Cited
US3571842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |